Merge branch 'perfcounters-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'perfcounters-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (58 commits)
  perf_counter: Fix perf_copy_attr() pointer arithmetic
  perf utils: Use a define for the maximum length of a trace event
  perf: Add timechart help text and add timechart to "perf help"
  tracing, x86, cpuidle: Move the end point of a C state in the power tracer
  perf utils: Be consistent about minimum text size in the svghelper
  perf timechart: Add "perf timechart record"
  perf: Add the timechart tool
  perf: Add a SVG helper library file
  tracing, perf: Convert the power tracer into an event tracer
  perf: Add a sample_event type to the event_union
  perf: Allow perf utilities to have "callback" options without arguments
  perf: Store trace event name/id pairs in perf.data
  perf: Add a timestamp to fork events
  sched_clock: Make it NMI safe
  perf_counter: Fix up swcounter throttling
  x86, perf_counter, bts: Optimize BTS overflow handling
  perf sched: Add --input=file option to builtin-sched.c
  perf trace: Sample timestamp and cpu when using record flag
  perf tools: Increase MAX_EVENT_LENGTH
  perf tools: Fix memory leak in read_ftrace_printk()
  ...

40 files changed, 4570 insertions, 759 deletions

diff --git a/Documentation/trace/power.txt b/Documentation/trace/power.txt
deleted file mode 100644
index cd805e16dc27..000000000000
--- a/Documentation/trace/power.txt
+++ /dev/null
@@ -1,17 +0,0 @@
-The power tracer collects detailed information about C-state and P-state
-transitions, instead of just looking at the high-level "average"
-information.
-
-There is a helper script found in scrips/tracing/power.pl in the kernel
-sources which can be used to parse this information and create a
-Scalable Vector Graphics (SVG) picture from the trace data.
-
-To use this tracer:
-
-        echo 0 > /sys/kernel/debug/tracing/tracing_enabled
-        echo power > /sys/kernel/debug/tracing/current_tracer
-        echo 1 > /sys/kernel/debug/tracing/tracing_enabled
-        sleep 1
-        echo 0 > /sys/kernel/debug/tracing/tracing_enabled
-        cat /sys/kernel/debug/tracing/trace | \
-                perl scripts/tracing/power.pl > out.sv
diff --git a/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c b/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
index 7bb676c533aa..7d5c3b0ea8da 100644
--- a/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
+++ b/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
@@ -33,7 +33,7 @@
 #include <linux/cpufreq.h>
 #include <linux/compiler.h>
 #include <linux/dmi.h>
-#include <trace/power.h>
+#include <trace/events/power.h>
 
 #include <linux/acpi.h>
 #include <linux/io.h>
@@ -72,8 +72,6 @@ static DEFINE_PER_CPU(struct acpi_cpufreq_data *, drv_data);
 
 static DEFINE_PER_CPU(struct aperfmperf, old_perf);
 
-DEFINE_TRACE(power_mark);
-
 /* acpi_perf_data is a pointer to percpu data. */
 static struct acpi_processor_performance *acpi_perf_data;
 
@@ -332,7 +330,6 @@ static int acpi_cpufreq_target(struct cpufreq_policy *policy,
         unsigned int next_perf_state = 0; /* Index into perf table */
         unsigned int i;
         int result = 0;
-        struct power_trace it;
 
         dprintk("acpi_cpufreq_target %d (%d)\n", target_freq, policy->cpu);
 
@@ -364,7 +361,7 @@ static int acpi_cpufreq_target(struct cpufreq_policy *policy,
                 }
         }
 
-        trace_power_mark(&it, POWER_PSTATE, next_perf_state);
+        trace_power_frequency(POWER_PSTATE, data->freq_table[next_state].frequency);
 
         switch (data->cpu_feature) {
         case SYSTEM_INTEL_MSR_CAPABLE:
diff --git a/arch/x86/kernel/cpu/perf_counter.c b/arch/x86/kernel/cpu/perf_counter.c
index 2732e2c1e4d3..dbdf712fae9e 100644
--- a/arch/x86/kernel/cpu/perf_counter.c
+++ b/arch/x86/kernel/cpu/perf_counter.c
@@ -36,10 +36,10 @@ static u64 perf_counter_mask __read_mostly;
 #define BTS_RECORD_SIZE         24
 
 /* The size of a per-cpu BTS buffer in bytes: */
-#define BTS_BUFFER_SIZE         (BTS_RECORD_SIZE * 1024)
+#define BTS_BUFFER_SIZE         (BTS_RECORD_SIZE * 2048)
 
 /* The BTS overflow threshold in bytes from the end of the buffer: */
-#define BTS_OVFL_TH             (BTS_RECORD_SIZE * 64)
+#define BTS_OVFL_TH             (BTS_RECORD_SIZE * 128)
 
 
 /*
@@ -1488,8 +1488,7 @@ void perf_counter_print_debug(void)
         local_irq_restore(flags);
 }
 
-static void intel_pmu_drain_bts_buffer(struct cpu_hw_counters *cpuc,
-                                       struct perf_sample_data *data)
+static void intel_pmu_drain_bts_buffer(struct cpu_hw_counters *cpuc)
 {
         struct debug_store *ds = cpuc->ds;
         struct bts_record {
@@ -1498,8 +1497,11 @@ static void intel_pmu_drain_bts_buffer(struct cpu_hw_counters *cpuc,
                 u64     flags;
         };
         struct perf_counter *counter = cpuc->counters[X86_PMC_IDX_FIXED_BTS];
-        unsigned long orig_ip = data->regs->ip;
         struct bts_record *at, *top;
+        struct perf_output_handle handle;
+        struct perf_event_header header;
+        struct perf_sample_data data;
+        struct pt_regs regs;
 
         if (!counter)
                 return;
@@ -1510,19 +1512,38 @@ static void intel_pmu_drain_bts_buffer(struct cpu_hw_counters *cpuc,
         at  = (struct bts_record *)(unsigned long)ds->bts_buffer_base;
         top = (struct bts_record *)(unsigned long)ds->bts_index;
 
+        if (top <= at)
+                return;
+
         ds->bts_index = ds->bts_buffer_base;
 
+
+        data.period     = counter->hw.last_period;
+        data.addr       = 0;
+        regs.ip         = 0;
+
+        /*
+         * Prepare a generic sample, i.e. fill in the invariant fields.
+         * We will overwrite the from and to address before we output
+         * the sample.
+         */
+        perf_prepare_sample(&header, &data, counter, &regs);
+
+        if (perf_output_begin(&handle, counter,
+                              header.size * (top - at), 1, 1))
+                return;
+
         for (; at < top; at++) {
-                data->regs->ip  = at->from;
-                data->addr      = at->to;
+                data.ip         = at->from;
+                data.addr       = at->to;
 
-                perf_counter_output(counter, 1, data);
+                perf_output_sample(&handle, &header, &data, counter);
         }
 
-        data->regs->ip  = orig_ip;
-        data->addr      = 0;
+        perf_output_end(&handle);
 
         /* There's new data available. */
+        counter->hw.interrupts++;
         counter->pending_kill = POLL_IN;
 }
 
@@ -1552,13 +1573,9 @@ static void x86_pmu_disable(struct perf_counter *counter)
         x86_perf_counter_update(counter, hwc, idx);
 
         /* Drain the remaining BTS records. */
-        if (unlikely(idx == X86_PMC_IDX_FIXED_BTS)) {
-                struct perf_sample_data data;
-                struct pt_regs regs;
+        if (unlikely(idx == X86_PMC_IDX_FIXED_BTS))
+                intel_pmu_drain_bts_buffer(cpuc);
 
-                data.regs = &regs;
-                intel_pmu_drain_bts_buffer(cpuc, &data);
-        }
         cpuc->counters[idx] = NULL;
         clear_bit(idx, cpuc->used_mask);
 
@@ -1619,7 +1636,6 @@ static int p6_pmu_handle_irq(struct pt_regs *regs)
         int idx, handled = 0;
         u64 val;
 
-        data.regs = regs;
         data.addr = 0;
 
         cpuc = &__get_cpu_var(cpu_hw_counters);
@@ -1644,7 +1660,7 @@ static int p6_pmu_handle_irq(struct pt_regs *regs)
                 if (!x86_perf_counter_set_period(counter, hwc, idx))
                         continue;
 
-                if (perf_counter_overflow(counter, 1, &data))
+                if (perf_counter_overflow(counter, 1, &data, regs))
                         p6_pmu_disable_counter(hwc, idx);
         }
 
@@ -1665,13 +1681,12 @@ static int intel_pmu_handle_irq(struct pt_regs *regs)
         int bit, loops;
         u64 ack, status;
 
-        data.regs = regs;
         data.addr = 0;
 
         cpuc = &__get_cpu_var(cpu_hw_counters);
 
         perf_disable();
-        intel_pmu_drain_bts_buffer(cpuc, &data);
+        intel_pmu_drain_bts_buffer(cpuc);
         status = intel_pmu_get_status();
         if (!status) {
                 perf_enable();
@@ -1702,7 +1717,7 @@ again:
 
                 data.period = counter->hw.last_period;
 
-                if (perf_counter_overflow(counter, 1, &data))
+                if (perf_counter_overflow(counter, 1, &data, regs))
                         intel_pmu_disable_counter(&counter->hw, bit);
         }
 
@@ -1729,7 +1744,6 @@ static int amd_pmu_handle_irq(struct pt_regs *regs)
         int idx, handled = 0;
         u64 val;
 
-        data.regs = regs;
         data.addr = 0;
 
         cpuc = &__get_cpu_var(cpu_hw_counters);
@@ -1754,7 +1768,7 @@ static int amd_pmu_handle_irq(struct pt_regs *regs)
                 if (!x86_perf_counter_set_period(counter, hwc, idx))
                         continue;
 
-                if (perf_counter_overflow(counter, 1, &data))
+                if (perf_counter_overflow(counter, 1, &data, regs))
                         amd_pmu_disable_counter(hwc, idx);
         }
 
diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
index 071166a4ba83..847ab4160315 100644
--- a/arch/x86/kernel/process.c
+++ b/arch/x86/kernel/process.c
@@ -9,7 +9,7 @@
 #include <linux/pm.h>
 #include <linux/clockchips.h>
 #include <linux/random.h>
-#include <trace/power.h>
+#include <trace/events/power.h>
 #include <asm/system.h>
 #include <asm/apic.h>
 #include <asm/syscalls.h>
@@ -25,9 +25,6 @@ EXPORT_SYMBOL(idle_nomwait);
 
 struct kmem_cache *task_xstate_cachep;
 
-DEFINE_TRACE(power_start);
-DEFINE_TRACE(power_end);
-
 int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src)
 {
         *dst = *src;
@@ -299,9 +296,7 @@ static inline int hlt_use_halt(void)
 void default_idle(void)
 {
         if (hlt_use_halt()) {
-                struct power_trace it;
-
-                trace_power_start(&it, POWER_CSTATE, 1);
+                trace_power_start(POWER_CSTATE, 1);
                 current_thread_info()->status &= ~TS_POLLING;
                 /*
                  * TS_POLLING-cleared state must be visible before we
@@ -314,7 +309,6 @@ void default_idle(void)
                 else
                         local_irq_enable();
                 current_thread_info()->status |= TS_POLLING;
-                trace_power_end(&it);
         } else {
                 local_irq_enable();
                 /* loop is done by the caller */
@@ -372,9 +366,7 @@ EXPORT_SYMBOL_GPL(cpu_idle_wait);
  */
 void mwait_idle_with_hints(unsigned long ax, unsigned long cx)
 {
-        struct power_trace it;
-
-        trace_power_start(&it, POWER_CSTATE, (ax>>4)+1);
+        trace_power_start(POWER_CSTATE, (ax>>4)+1);
         if (!need_resched()) {
                 if (cpu_has(&current_cpu_data, X86_FEATURE_CLFLUSH_MONITOR))
                         clflush((void *)&current_thread_info()->flags);
@@ -384,15 +376,13 @@ void mwait_idle_with_hints(unsigned long ax, unsigned long cx)
                 if (!need_resched())
                         __mwait(ax, cx);
         }
-        trace_power_end(&it);
 }
 
 /* Default MONITOR/MWAIT with no hints, used for default C1 state */
 static void mwait_idle(void)
 {
-        struct power_trace it;
         if (!need_resched()) {
-                trace_power_start(&it, POWER_CSTATE, 1);
+                trace_power_start(POWER_CSTATE, 1);
                 if (cpu_has(&current_cpu_data, X86_FEATURE_CLFLUSH_MONITOR))
                         clflush((void *)&current_thread_info()->flags);
 
@@ -402,7 +392,6 @@ static void mwait_idle(void)
                         __sti_mwait(0, 0);
                 else
                         local_irq_enable();
-                trace_power_end(&it);
         } else
                 local_irq_enable();
 }
@@ -414,13 +403,11 @@ static void mwait_idle(void)
  */
 static void poll_idle(void)
 {
-        struct power_trace it;
-
-        trace_power_start(&it, POWER_CSTATE, 0);
+        trace_power_start(POWER_CSTATE, 0);
         local_irq_enable();
         while (!need_resched())
                 cpu_relax();
-        trace_power_end(&it);
+        trace_power_end(0);
 }
 
 /*
diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c
index 8504a2108557..ad41f19b8e3f 100644
--- a/drivers/cpuidle/cpuidle.c
+++ b/drivers/cpuidle/cpuidle.c
@@ -17,6 +17,7 @@
 #include <linux/cpuidle.h>
 #include <linux/ktime.h>
 #include <linux/hrtimer.h>
+#include <trace/events/power.h>
 
 #include "cpuidle.h"
 
@@ -91,6 +92,7 @@ static void cpuidle_idle_call(void)
         /* give the governor an opportunity to reflect on the outcome */
         if (cpuidle_curr_governor->reflect)
                 cpuidle_curr_governor->reflect(dev);
+        trace_power_end(0);
 }
 
 /**
diff --git a/include/linux/perf_counter.h b/include/linux/perf_counter.h
index 972f90d7a32f..bd341007c4fc 100644
--- a/include/linux/perf_counter.h
+++ b/include/linux/perf_counter.h
@@ -199,10 +199,14 @@ struct perf_counter_attr {
                                 inherit_stat   :  1, /* per task counts       */
                                 enable_on_exec :  1, /* next exec enables     */
                                 task           :  1, /* trace fork/exit       */
+                                watermark      :  1, /* wakeup_watermark      */
 
-                                __reserved_1   : 50;
+                                __reserved_1   : 49;
 
-        __u32                   wakeup_events;  /* wakeup every n events */
+        union {
+                __u32           wakeup_events;    /* wakeup every n events */
+                __u32           wakeup_watermark; /* bytes before wakeup   */
+        };
         __u32                   __reserved_2;
 
         __u64                   __reserved_3;
@@ -332,6 +336,7 @@ enum perf_event_type {
          *      struct perf_event_header        header;
          *      u32                             pid, ppid;
          *      u32                             tid, ptid;
+         *      u64                             time;
          * };
          */
         PERF_EVENT_EXIT                 = 4,
@@ -352,6 +357,7 @@ enum perf_event_type {
          *      struct perf_event_header        header;
          *      u32                             pid, ppid;
          *      u32                             tid, ptid;
+         *      { u64                           time;     } && PERF_SAMPLE_TIME
          * };
          */
         PERF_EVENT_FORK                 = 7,
@@ -521,6 +527,8 @@ struct perf_mmap_data {
         atomic_t                        wakeup;         /* needs a wakeup    */
         atomic_t                        lost;           /* nr records lost   */
 
+        long                            watermark;      /* wakeup watermark  */
+
         struct perf_counter_mmap_page   *user_page;
         void                            *data_pages[0];
 };
@@ -685,6 +693,17 @@ struct perf_cpu_context {
         int                             recursion[4];
 };
 
+struct perf_output_handle {
+        struct perf_counter     *counter;
+        struct perf_mmap_data   *data;
+        unsigned long           head;
+        unsigned long           offset;
+        int                     nmi;
+        int                     sample;
+        int                     locked;
+        unsigned long           flags;
+};
+
 #ifdef CONFIG_PERF_COUNTERS
 
 /*
@@ -716,16 +735,38 @@ extern int hw_perf_group_sched_in(struct perf_counter *group_leader,
 extern void perf_counter_update_userpage(struct perf_counter *counter);
 
 struct perf_sample_data {
-        struct pt_regs                  *regs;
+        u64                             type;
+
+        u64                             ip;
+        struct {
+                u32     pid;
+                u32     tid;
+        }                               tid_entry;
+        u64                             time;
         u64                             addr;
+        u64                             id;
+        u64                             stream_id;
+        struct {
+                u32     cpu;
+                u32     reserved;
+        }                               cpu_entry;
         u64                             period;
+        struct perf_callchain_entry     *callchain;
         struct perf_raw_record          *raw;
 };
 
+extern void perf_output_sample(struct perf_output_handle *handle,
+                               struct perf_event_header *header,
+                               struct perf_sample_data *data,
+                               struct perf_counter *counter);
+extern void perf_prepare_sample(struct perf_event_header *header,
+                                struct perf_sample_data *data,
+                                struct perf_counter *counter,
+                                struct pt_regs *regs);
+
 extern int perf_counter_overflow(struct perf_counter *counter, int nmi,
-                                 struct perf_sample_data *data);
-extern void perf_counter_output(struct perf_counter *counter, int nmi,
-                                struct perf_sample_data *data);
+                                 struct perf_sample_data *data,
+                                 struct pt_regs *regs);
 
 /*
  * Return 1 for a software counter, 0 for a hardware counter
@@ -775,6 +816,12 @@ extern void perf_tpcounter_event(int event_id, u64 addr, u64 count,
 #define perf_instruction_pointer(regs)  instruction_pointer(regs)
 #endif
 
+extern int perf_output_begin(struct perf_output_handle *handle,
+                             struct perf_counter *counter, unsigned int size,
+                             int nmi, int sample);
+extern void perf_output_end(struct perf_output_handle *handle);
+extern void perf_output_copy(struct perf_output_handle *handle,
+                             const void *buf, unsigned int len);
 #else
 static inline void
 perf_counter_task_sched_in(struct task_struct *task, int cpu)           { }
@@ -801,7 +848,28 @@ static inline void perf_counter_mmap(struct vm_area_struct *vma)	{ }
 static inline void perf_counter_comm(struct task_struct *tsk)           { }
 static inline void perf_counter_fork(struct task_struct *tsk)           { }
 static inline void perf_counter_init(void)                              { }
+
+static inline int
+perf_output_begin(struct perf_output_handle *handle, struct perf_counter *c,
+                  unsigned int size, int nmi, int sample)               { }
+static inline void perf_output_end(struct perf_output_handle *handle)   { }
+static inline void
+perf_output_copy(struct perf_output_handle *handle,
+                 const void *buf, unsigned int len)                     { }
+static inline void
+perf_output_sample(struct perf_output_handle *handle,
+                   struct perf_event_header *header,
+                   struct perf_sample_data *data,
+                   struct perf_counter *counter)                        { }
+static inline void
+perf_prepare_sample(struct perf_event_header *header,
+                    struct perf_sample_data *data,
+                    struct perf_counter *counter,
+                    struct pt_regs *regs)                               { }
 #endif
 
+#define perf_output_put(handle, x) \
+        perf_output_copy((handle), &(x), sizeof(x))
+
 #endif /* __KERNEL__ */
 #endif /* _LINUX_PERF_COUNTER_H */
diff --git a/include/trace/events/power.h b/include/trace/events/power.h
new file mode 100644
index 000000000000..ea6d579261ad
--- /dev/null
+++ b/include/trace/events/power.h
@@ -0,0 +1,81 @@
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM power
+
+#if !defined(_TRACE_POWER_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_POWER_H
+
+#include <linux/ktime.h>
+#include <linux/tracepoint.h>
+
+#ifndef _TRACE_POWER_ENUM_
+#define _TRACE_POWER_ENUM_
+enum {
+        POWER_NONE = 0,
+        POWER_CSTATE = 1,
+        POWER_PSTATE = 2,
+};
+#endif
+
+
+
+TRACE_EVENT(power_start,
+
+        TP_PROTO(unsigned int type, unsigned int state),
+
+        TP_ARGS(type, state),
+
+        TP_STRUCT__entry(
+                __field(        u64,            type            )
+                __field(        u64,            state           )
+        ),
+
+        TP_fast_assign(
+                __entry->type = type;
+                __entry->state = state;
+        ),
+
+        TP_printk("type=%lu state=%lu", (unsigned long)__entry->type, (unsigned long)__entry->state)
+);
+
+TRACE_EVENT(power_end,
+
+        TP_PROTO(int dummy),
+
+        TP_ARGS(dummy),
+
+        TP_STRUCT__entry(
+                __field(        u64,            dummy           )
+        ),
+
+        TP_fast_assign(
+                __entry->dummy = 0xffff;
+        ),
+
+        TP_printk("dummy=%lu", (unsigned long)__entry->dummy)
+
+);
+
+
+TRACE_EVENT(power_frequency,
+
+        TP_PROTO(unsigned int type, unsigned int state),
+
+        TP_ARGS(type, state),
+
+        TP_STRUCT__entry(
+                __field(        u64,            type            )
+                __field(        u64,            state           )
+        ),
+
+        TP_fast_assign(
+                __entry->type = type;
+                __entry->state = state;
+        ),
+
+        TP_printk("type=%lu state=%lu", (unsigned long)__entry->type, (unsigned long) __entry->state)
+);
+
+#endif /* _TRACE_POWER_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>
diff --git a/include/trace/events/sched.h b/include/trace/events/sched.h
index b48f1ad7c946..4069c43f4187 100644
--- a/include/trace/events/sched.h
+++ b/include/trace/events/sched.h
@@ -380,6 +380,39 @@ TRACE_EVENT(sched_stat_wait,
 );
 
 /*
+ * Tracepoint for accounting runtime (time the task is executing
+ * on a CPU).
+ */
+TRACE_EVENT(sched_stat_runtime,
+
+        TP_PROTO(struct task_struct *tsk, u64 runtime, u64 vruntime),
+
+        TP_ARGS(tsk, runtime, vruntime),
+
+        TP_STRUCT__entry(
+                __array( char,  comm,   TASK_COMM_LEN   )
+                __field( pid_t, pid                     )
+                __field( u64,   runtime                 )
+                __field( u64,   vruntime                        )
+        ),
+
+        TP_fast_assign(
+                memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
+                __entry->pid            = tsk->pid;
+                __entry->runtime        = runtime;
+                __entry->vruntime       = vruntime;
+        )
+        TP_perf_assign(
+                __perf_count(runtime);
+        ),
+
+        TP_printk("task: %s:%d runtime: %Lu [ns], vruntime: %Lu [ns]",
+                        __entry->comm, __entry->pid,
+                        (unsigned long long)__entry->runtime,
+                        (unsigned long long)__entry->vruntime)
+);
+
+/*
  * Tracepoint for accounting sleep time (time the task is not runnable,
  * including iowait, see below).
  */
diff --git a/kernel/perf_counter.c b/kernel/perf_counter.c
index 8cb94a52d1bb..cc768ab81ac8 100644
--- a/kernel/perf_counter.c
+++ b/kernel/perf_counter.c
@@ -2176,6 +2176,13 @@ static int perf_mmap_data_alloc(struct perf_counter *counter, int nr_pages)
         data->nr_pages = nr_pages;
         atomic_set(&data->lock, -1);
 
+        if (counter->attr.watermark) {
+                data->watermark = min_t(long, PAGE_SIZE * nr_pages,
+                                      counter->attr.wakeup_watermark);
+        }
+        if (!data->watermark)
+                data->watermark = max(PAGE_SIZE, PAGE_SIZE * nr_pages / 4);
+
         rcu_assign_pointer(counter->data, data);
 
         return 0;
@@ -2315,7 +2322,8 @@ static int perf_mmap(struct file *file, struct vm_area_struct *vma)
         lock_limit >>= PAGE_SHIFT;
         locked = vma->vm_mm->locked_vm + extra;
 
-        if ((locked > lock_limit) && !capable(CAP_IPC_LOCK)) {
+        if ((locked > lock_limit) && perf_paranoid_tracepoint_raw() &&
+                !capable(CAP_IPC_LOCK)) {
                 ret = -EPERM;
                 goto unlock;
         }
@@ -2504,35 +2512,15 @@ __weak struct perf_callchain_entry *perf_callchain(struct pt_regs *regs)
 /*
  * Output
  */
-
-struct perf_output_handle {
-        struct perf_counter     *counter;
-        struct perf_mmap_data   *data;
-        unsigned long           head;
-        unsigned long           offset;
-        int                     nmi;
-        int                     sample;
-        int                     locked;
-        unsigned long           flags;
-};
-
-static bool perf_output_space(struct perf_mmap_data *data,
-                              unsigned int offset, unsigned int head)
+static bool perf_output_space(struct perf_mmap_data *data, unsigned long tail,
+                              unsigned long offset, unsigned long head)
 {
-        unsigned long tail;
         unsigned long mask;
 
         if (!data->writable)
                 return true;
 
         mask = (data->nr_pages << PAGE_SHIFT) - 1;
-        /*
-         * Userspace could choose to issue a mb() before updating the tail
-         * pointer. So that all reads will be completed before the write is
-         * issued.
-         */
-        tail = ACCESS_ONCE(data->user_page->data_tail);
-        smp_rmb();
 
         offset = (offset - tail) & mask;
         head   = (head   - tail) & mask;
@@ -2633,8 +2621,8 @@ out:
         local_irq_restore(handle->flags);
 }
 
-static void perf_output_copy(struct perf_output_handle *handle,
-                             const void *buf, unsigned int len)
+void perf_output_copy(struct perf_output_handle *handle,
+                      const void *buf, unsigned int len)
 {
         unsigned int pages_mask;
         unsigned int offset;
@@ -2669,16 +2657,13 @@ static void perf_output_copy(struct perf_output_handle *handle,
         WARN_ON_ONCE(((long)(handle->head - handle->offset)) < 0);
 }
 
-#define perf_output_put(handle, x) \
-        perf_output_copy((handle), &(x), sizeof(x))
-
-static int perf_output_begin(struct perf_output_handle *handle,
-                             struct perf_counter *counter, unsigned int size,
-                             int nmi, int sample)
+int perf_output_begin(struct perf_output_handle *handle,
+                      struct perf_counter *counter, unsigned int size,
+                      int nmi, int sample)
 {
         struct perf_counter *output_counter;
         struct perf_mmap_data *data;
-        unsigned int offset, head;
+        unsigned long tail, offset, head;
         int have_lost;
         struct {
                 struct perf_event_header header;
@@ -2716,16 +2701,23 @@ static int perf_output_begin(struct perf_output_handle *handle,
         perf_output_lock(handle);
 
         do {
+                /*
+                 * Userspace could choose to issue a mb() before updating the
+                 * tail pointer. So that all reads will be completed before the
+                 * write is issued.
+                 */
+                tail = ACCESS_ONCE(data->user_page->data_tail);
+                smp_rmb();
                 offset = head = atomic_long_read(&data->head);
                 head += size;
-                if (unlikely(!perf_output_space(data, offset, head)))
+                if (unlikely(!perf_output_space(data, tail, offset, head)))
                         goto fail;
         } while (atomic_long_cmpxchg(&data->head, offset, head) != offset);
 
         handle->offset  = offset;
         handle->head    = head;
 
-        if ((offset >> PAGE_SHIFT) != (head >> PAGE_SHIFT))
+        if (head - tail > data->watermark)
                 atomic_set(&data->wakeup, 1);
 
         if (have_lost) {
@@ -2749,7 +2741,7 @@ out:
         return -ENOSPC;
 }
 
-static void perf_output_end(struct perf_output_handle *handle)
+void perf_output_end(struct perf_output_handle *handle)
 {
         struct perf_counter *counter = handle->counter;
         struct perf_mmap_data *data = handle->data;
@@ -2863,156 +2855,176 @@ static void perf_output_read(struct perf_output_handle *handle,
                 perf_output_read_one(handle, counter);
 }
 
-void perf_counter_output(struct perf_counter *counter, int nmi,
-                                struct perf_sample_data *data)
+void perf_output_sample(struct perf_output_handle *handle,
+                        struct perf_event_header *header,
+                        struct perf_sample_data *data,
+                        struct perf_counter *counter)
 {
-        int ret;
-        u64 sample_type = counter->attr.sample_type;
-        struct perf_output_handle handle;
-        struct perf_event_header header;
-        u64 ip;
-        struct {
-                u32 pid, tid;
-        } tid_entry;
-        struct perf_callchain_entry *callchain = NULL;
-        int callchain_size = 0;
-        u64 time;
-        struct {
-                u32 cpu, reserved;
-        } cpu_entry;
+        u64 sample_type = data->type;
 
-        header.type = PERF_EVENT_SAMPLE;
-        header.size = sizeof(header);
+        perf_output_put(handle, *header);
 
-        header.misc = 0;
-        header.misc |= perf_misc_flags(data->regs);
-
-        if (sample_type & PERF_SAMPLE_IP) {
-                ip = perf_instruction_pointer(data->regs);
-                header.size += sizeof(ip);
-        }
-
-        if (sample_type & PERF_SAMPLE_TID) {
-                /* namespace issues */
-                tid_entry.pid = perf_counter_pid(counter, current);
-                tid_entry.tid = perf_counter_tid(counter, current);
-
-                header.size += sizeof(tid_entry);
-        }
+        if (sample_type & PERF_SAMPLE_IP)
+                perf_output_put(handle, data->ip);
 
-        if (sample_type & PERF_SAMPLE_TIME) {
-                /*
-                 * Maybe do better on x86 and provide cpu_clock_nmi()
-                 */
-                time = sched_clock();
+        if (sample_type & PERF_SAMPLE_TID)
+                perf_output_put(handle, data->tid_entry);
 
-                header.size += sizeof(u64);
-        }
+        if (sample_type & PERF_SAMPLE_TIME)
+                perf_output_put(handle, data->time);
 
         if (sample_type & PERF_SAMPLE_ADDR)
-                header.size += sizeof(u64);
+                perf_output_put(handle, data->addr);
 
         if (sample_type & PERF_SAMPLE_ID)
-                header.size += sizeof(u64);
+                perf_output_put(handle, data->id);
 
         if (sample_type & PERF_SAMPLE_STREAM_ID)
-                header.size += sizeof(u64);
-
-        if (sample_type & PERF_SAMPLE_CPU) {
-                header.size += sizeof(cpu_entry);
+                perf_output_put(handle, data->stream_id);
 
-                cpu_entry.cpu = raw_smp_processor_id();
-                cpu_entry.reserved = 0;
-        }
+        if (sample_type & PERF_SAMPLE_CPU)
+                perf_output_put(handle, data->cpu_entry);
 
         if (sample_type & PERF_SAMPLE_PERIOD)
-                header.size += sizeof(u64);
+                perf_output_put(handle, data->period);
 
         if (sample_type & PERF_SAMPLE_READ)
-                header.size += perf_counter_read_size(counter);
+                perf_output_read(handle, counter);
 
         if (sample_type & PERF_SAMPLE_CALLCHAIN) {
-                callchain = perf_callchain(data->regs);
+                if (data->callchain) {
+                        int size = 1;
 
-                if (callchain) {
-                        callchain_size = (1 + callchain->nr) * sizeof(u64);
-                        header.size += callchain_size;
-                } else
-                        header.size += sizeof(u64);
+                        if (data->callchain)
+                                size += data->callchain->nr;
+
+                        size *= sizeof(u64);
+
+                        perf_output_copy(handle, data->callchain, size);
+                } else {
+                        u64 nr = 0;
+                        perf_output_put(handle, nr);
+                }
         }
 
         if (sample_type & PERF_SAMPLE_RAW) {
-                int size = sizeof(u32);
+                if (data->raw) {
+                        perf_output_put(handle, data->raw->size);
+                        perf_output_copy(handle, data->raw->data,
+                                         data->raw->size);
+                } else {
+                        struct {
+                                u32     size;
+                                u32     data;
+                        } raw = {
+                                .size = sizeof(u32),
+                                .data = 0,
+                        };
+                        perf_output_put(handle, raw);
+                }
+        }
+}
 
-                if (data->raw)
-                        size += data->raw->size;
-                else
-                        size += sizeof(u32);
+void perf_prepare_sample(struct perf_event_header *header,
+                         struct perf_sample_data *data,
+                         struct perf_counter *counter,
+                         struct pt_regs *regs)
+{
+        u64 sample_type = counter->attr.sample_type;
 
-                WARN_ON_ONCE(size & (sizeof(u64)-1));
-                header.size += size;
-        }
+        data->type = sample_type;
 
-        ret = perf_output_begin(&handle, counter, header.size, nmi, 1);
-        if (ret)
-                return;
+        header->type = PERF_EVENT_SAMPLE;
+        header->size = sizeof(*header);
 
-        perf_output_put(&handle, header);
+        header->misc = 0;
+        header->misc |= perf_misc_flags(regs);
 
-        if (sample_type & PERF_SAMPLE_IP)
-                perf_output_put(&handle, ip);
+        if (sample_type & PERF_SAMPLE_IP) {
+                data->ip = perf_instruction_pointer(regs);
 
-        if (sample_type & PERF_SAMPLE_TID)
-                perf_output_put(&handle, tid_entry);
+                header->size += sizeof(data->ip);
+        }
 
-        if (sample_type & PERF_SAMPLE_TIME)
-                perf_output_put(&handle, time);
+        if (sample_type & PERF_SAMPLE_TID) {
+                /* namespace issues */
+                data->tid_entry.pid = perf_counter_pid(counter, current);
+                data->tid_entry.tid = perf_counter_tid(counter, current);
+
+                header->size += sizeof(data->tid_entry);
+        }
+
+        if (sample_type & PERF_SAMPLE_TIME) {
+                data->time = perf_clock();
+
+                header->size += sizeof(data->time);
+        }
 
         if (sample_type & PERF_SAMPLE_ADDR)
-                perf_output_put(&handle, data->addr);
+                header->size += sizeof(data->addr);
 
         if (sample_type & PERF_SAMPLE_ID) {
-                u64 id = primary_counter_id(counter);
+                data->id = primary_counter_id(counter);
 
-                perf_output_put(&handle, id);
+                header->size += sizeof(data->id);
         }
 
-        if (sample_type & PERF_SAMPLE_STREAM_ID)
-                perf_output_put(&handle, counter->id);
+        if (sample_type & PERF_SAMPLE_STREAM_ID) {
+                data->stream_id = counter->id;
 
-        if (sample_type & PERF_SAMPLE_CPU)
-                perf_output_put(&handle, cpu_entry);
+                header->size += sizeof(data->stream_id);
+        }
+
+        if (sample_type & PERF_SAMPLE_CPU) {
+                data->cpu_entry.cpu             = raw_smp_processor_id();
+                data->cpu_entry.reserved        = 0;
+
+                header->size += sizeof(data->cpu_entry);
+        }
 
         if (sample_type & PERF_SAMPLE_PERIOD)
-                perf_output_put(&handle, data->period);
+                header->size += sizeof(data->period);
 
         if (sample_type & PERF_SAMPLE_READ)
-                perf_output_read(&handle, counter);
+                header->size += perf_counter_read_size(counter);
 
         if (sample_type & PERF_SAMPLE_CALLCHAIN) {
-                if (callchain)
-                        perf_output_copy(&handle, callchain, callchain_size);
-                else {
-                        u64 nr = 0;
-                        perf_output_put(&handle, nr);
-                }
+                int size = 1;
+
+                data->callchain = perf_callchain(regs);
+
+                if (data->callchain)
+                        size += data->callchain->nr;
+
+                header->size += size * sizeof(u64);
         }
 
         if (sample_type & PERF_SAMPLE_RAW) {
-                if (data->raw) {
-                        perf_output_put(&handle, data->raw->size);
-                        perf_output_copy(&handle, data->raw->data, data->raw->size);
-                } else {
-                        struct {
-                                u32     size;
-                                u32     data;
-                        } raw = {
-                                .size = sizeof(u32),
-                                .data = 0,
-                        };
-                        perf_output_put(&handle, raw);
-                }
+                int size = sizeof(u32);
+
+                if (data->raw)
+                        size += data->raw->size;
+                else
+                        size += sizeof(u32);
+
+                WARN_ON_ONCE(size & (sizeof(u64)-1));
+                header->size += size;
         }
+}
+
+static void perf_counter_output(struct perf_counter *counter, int nmi,
+                                struct perf_sample_data *data,
+                                struct pt_regs *regs)
+{
+        struct perf_output_handle handle;
+        struct perf_event_header header;
+
+        perf_prepare_sample(&header, data, counter, regs);
+
+        if (perf_output_begin(&handle, counter, header.size, nmi, 1))
+                return;
+
+        perf_output_sample(&handle, &header, data, counter);
 
         perf_output_end(&handle);
 }
@@ -3071,6 +3083,7 @@ struct perf_task_event {
                 u32                             ppid;
                 u32                             tid;
                 u32                             ptid;
+                u64                             time;
         } event;
 };
 
@@ -3078,9 +3091,12 @@ static void perf_counter_task_output(struct perf_counter *counter,
                                      struct perf_task_event *task_event)
 {
         struct perf_output_handle handle;
-        int size = task_event->event.header.size;
+        int size;
         struct task_struct *task = task_event->task;
-        int ret = perf_output_begin(&handle, counter, size, 0, 0);
+        int ret;
+
+        size  = task_event->event.header.size;
+        ret = perf_output_begin(&handle, counter, size, 0, 0);
 
         if (ret)
                 return;
@@ -3091,7 +3107,10 @@ static void perf_counter_task_output(struct perf_counter *counter,
         task_event->event.tid = perf_counter_tid(counter, task);
         task_event->event.ptid = perf_counter_tid(counter, current);
 
+        task_event->event.time = perf_clock();
+
         perf_output_put(&handle, task_event->event);
+
         perf_output_end(&handle);
 }
 
@@ -3473,7 +3492,7 @@ static void perf_log_throttle(struct perf_counter *counter, int enable)
                         .misc = 0,
                         .size = sizeof(throttle_event),
                 },
-                .time           = sched_clock(),
+                .time           = perf_clock(),
                 .id             = primary_counter_id(counter),
                 .stream_id      = counter->id,
         };
@@ -3493,14 +3512,16 @@ static void perf_log_throttle(struct perf_counter *counter, int enable)
  * Generic counter overflow handling, sampling.
  */
 
-int perf_counter_overflow(struct perf_counter *counter, int nmi,
-                          struct perf_sample_data *data)
+static int __perf_counter_overflow(struct perf_counter *counter, int nmi,
+                                   int throttle, struct perf_sample_data *data,
+                                   struct pt_regs *regs)
 {
         int events = atomic_read(&counter->event_limit);
-        int throttle = counter->pmu->unthrottle != NULL;
         struct hw_perf_counter *hwc = &counter->hw;
         int ret = 0;
 
+        throttle = (throttle && counter->pmu->unthrottle != NULL);
+
         if (!throttle) {
                 hwc->interrupts++;
         } else {
@@ -3523,7 +3544,7 @@ int perf_counter_overflow(struct perf_counter *counter, int nmi,
         }
 
         if (counter->attr.freq) {
-                u64 now = sched_clock();
+                u64 now = perf_clock();
                 s64 delta = now - hwc->freq_stamp;
 
                 hwc->freq_stamp = now;
@@ -3549,10 +3570,17 @@ int perf_counter_overflow(struct perf_counter *counter, int nmi,
                         perf_counter_disable(counter);
         }
 
-        perf_counter_output(counter, nmi, data);
+        perf_counter_output(counter, nmi, data, regs);
         return ret;
 }
 
+int perf_counter_overflow(struct perf_counter *counter, int nmi,
+                          struct perf_sample_data *data,
+                          struct pt_regs *regs)
+{
+        return __perf_counter_overflow(counter, nmi, 1, data, regs);
+}
+
 /*
  * Generic software counter infrastructure
  */
@@ -3588,9 +3616,11 @@ again:
 }
 
 static void perf_swcounter_overflow(struct perf_counter *counter,
-                                    int nmi, struct perf_sample_data *data)
+                                    int nmi, struct perf_sample_data *data,
+                                    struct pt_regs *regs)
 {
         struct hw_perf_counter *hwc = &counter->hw;
+        int throttle = 0;
         u64 overflow;
 
         data->period = counter->hw.last_period;
@@ -3600,13 +3630,15 @@ static void perf_swcounter_overflow(struct perf_counter *counter,
                 return;
 
         for (; overflow; overflow--) {
-                if (perf_counter_overflow(counter, nmi, data)) {
+                if (__perf_counter_overflow(counter, nmi, throttle,
+                                            data, regs)) {
                         /*
                          * We inhibit the overflow from happening when
                          * hwc->interrupts == MAX_INTERRUPTS.
                          */
                         break;
                 }
+                throttle = 1;
         }
 }
 
@@ -3618,7 +3650,8 @@ static void perf_swcounter_unthrottle(struct perf_counter *counter)
 }
 
 static void perf_swcounter_add(struct perf_counter *counter, u64 nr,
-                               int nmi, struct perf_sample_data *data)
+                               int nmi, struct perf_sample_data *data,
+                               struct pt_regs *regs)
 {
         struct hw_perf_counter *hwc = &counter->hw;
 
@@ -3627,11 +3660,11 @@ static void perf_swcounter_add(struct perf_counter *counter, u64 nr,
         if (!hwc->sample_period)
                 return;
 
-        if (!data->regs)
+        if (!regs)
                 return;
 
         if (!atomic64_add_negative(nr, &hwc->period_left))
-                perf_swcounter_overflow(counter, nmi, data);
+                perf_swcounter_overflow(counter, nmi, data, regs);
 }
 
 static int perf_swcounter_is_counting(struct perf_counter *counter)
@@ -3690,7 +3723,8 @@ static int perf_swcounter_match(struct perf_counter *counter,
 static void perf_swcounter_ctx_event(struct perf_counter_context *ctx,
                                      enum perf_type_id type,
                                      u32 event, u64 nr, int nmi,
-                                     struct perf_sample_data *data)
+                                     struct perf_sample_data *data,
+                                     struct pt_regs *regs)
 {
         struct perf_counter *counter;
 
@@ -3699,8 +3733,8 @@ static void perf_swcounter_ctx_event(struct perf_counter_context *ctx,
 
         rcu_read_lock();
         list_for_each_entry_rcu(counter, &ctx->event_list, event_entry) {
-                if (perf_swcounter_match(counter, type, event, data->regs))
-                        perf_swcounter_add(counter, nr, nmi, data);
+                if (perf_swcounter_match(counter, type, event, regs))
+                        perf_swcounter_add(counter, nr, nmi, data, regs);
         }
         rcu_read_unlock();
 }
@@ -3721,7 +3755,8 @@ static int *perf_swcounter_recursion_context(struct perf_cpu_context *cpuctx)
 
 static void do_perf_swcounter_event(enum perf_type_id type, u32 event,
                                     u64 nr, int nmi,
-                                    struct perf_sample_data *data)
+                                    struct perf_sample_data *data,
+                                    struct pt_regs *regs)
 {
         struct perf_cpu_context *cpuctx = &get_cpu_var(perf_cpu_context);
         int *recursion = perf_swcounter_recursion_context(cpuctx);
@@ -3734,7 +3769,7 @@ static void do_perf_swcounter_event(enum perf_type_id type, u32 event,
         barrier();
 
         perf_swcounter_ctx_event(&cpuctx->ctx, type, event,
-                                 nr, nmi, data);
+                                 nr, nmi, data, regs);
         rcu_read_lock();
         /*
          * doesn't really matter which of the child contexts the
@@ -3742,7 +3777,7 @@ static void do_perf_swcounter_event(enum perf_type_id type, u32 event,
          */
         ctx = rcu_dereference(current->perf_counter_ctxp);
         if (ctx)
-                perf_swcounter_ctx_event(ctx, type, event, nr, nmi, data);
+                perf_swcounter_ctx_event(ctx, type, event, nr, nmi, data, regs);
         rcu_read_unlock();
 
         barrier();
@@ -3756,11 +3791,11 @@ void __perf_swcounter_event(u32 event, u64 nr, int nmi,
                             struct pt_regs *regs, u64 addr)
 {
         struct perf_sample_data data = {
-                .regs = regs,
                 .addr = addr,
         };
 
-        do_perf_swcounter_event(PERF_TYPE_SOFTWARE, event, nr, nmi, &data);
+        do_perf_swcounter_event(PERF_TYPE_SOFTWARE, event, nr, nmi,
+                                &data, regs);
 }
 
 static void perf_swcounter_read(struct perf_counter *counter)
@@ -3797,6 +3832,7 @@ static enum hrtimer_restart perf_swcounter_hrtimer(struct hrtimer *hrtimer)
 {
         enum hrtimer_restart ret = HRTIMER_RESTART;
         struct perf_sample_data data;
+        struct pt_regs *regs;
         struct perf_counter *counter;
         u64 period;
 
@@ -3804,17 +3840,17 @@ static enum hrtimer_restart perf_swcounter_hrtimer(struct hrtimer *hrtimer)
         counter->pmu->read(counter);
 
         data.addr = 0;
-        data.regs = get_irq_regs();
+        regs = get_irq_regs();
         /*
          * In case we exclude kernel IPs or are somehow not in interrupt
          * context, provide the next best thing, the user IP.
          */
-        if ((counter->attr.exclude_kernel || !data.regs) &&
+        if ((counter->attr.exclude_kernel || !regs) &&
                         !counter->attr.exclude_user)
-                data.regs = task_pt_regs(current);
+                regs = task_pt_regs(current);
 
-        if (data.regs) {
-                if (perf_counter_overflow(counter, 0, &data))
+        if (regs) {
+                if (perf_counter_overflow(counter, 0, &data, regs))
                         ret = HRTIMER_NORESTART;
         }
 
@@ -3950,15 +3986,17 @@ void perf_tpcounter_event(int event_id, u64 addr, u64 count, void *record,
         };
 
         struct perf_sample_data data = {
-                .regs = get_irq_regs(),
                 .addr = addr,
                 .raw = &raw,
         };
 
-        if (!data.regs)
-                data.regs = task_pt_regs(current);
+        struct pt_regs *regs = get_irq_regs();
+
+        if (!regs)
+                regs = task_pt_regs(current);
 
-        do_perf_swcounter_event(PERF_TYPE_TRACEPOINT, event_id, count, 1, &data);
+        do_perf_swcounter_event(PERF_TYPE_TRACEPOINT, event_id, count, 1,
+                                &data, regs);
 }
 EXPORT_SYMBOL_GPL(perf_tpcounter_event);
 
@@ -4170,8 +4208,8 @@ done:
 static int perf_copy_attr(struct perf_counter_attr __user *uattr,
                           struct perf_counter_attr *attr)
 {
-        int ret;
         u32 size;
+        int ret;
 
         if (!access_ok(VERIFY_WRITE, uattr, PERF_ATTR_SIZE_VER0))
                 return -EFAULT;
@@ -4196,19 +4234,19 @@ static int perf_copy_attr(struct perf_counter_attr __user *uattr,
 
         /*
          * If we're handed a bigger struct than we know of,
-         * ensure all the unknown bits are 0.
+         * ensure all the unknown bits are 0 - i.e. new
+         * user-space does not rely on any kernel feature
+         * extensions we dont know about yet.
          */
         if (size > sizeof(*attr)) {
-                unsigned long val;
-                unsigned long __user *addr;
-                unsigned long __user *end;
+                unsigned char __user *addr;
+                unsigned char __user *end;
+                unsigned char val;
 
-                addr = PTR_ALIGN((void __user *)uattr + sizeof(*attr),
-                                sizeof(unsigned long));
-                end  = PTR_ALIGN((void __user *)uattr + size,
-                                sizeof(unsigned long));
+                addr = (void __user *)uattr + sizeof(*attr);
+                end  = (void __user *)uattr + size;
 
-                for (; addr < end; addr += sizeof(unsigned long)) {
+                for (; addr < end; addr++) {
                         ret = get_user(val, addr);
                         if (ret)
                                 return ret;
diff --git a/kernel/sched_clock.c b/kernel/sched_clock.c
index e1d16c9a7680..ac2e1dc708bd 100644
--- a/kernel/sched_clock.c
+++ b/kernel/sched_clock.c
@@ -48,13 +48,6 @@ static __read_mostly int sched_clock_running;
 __read_mostly int sched_clock_stable;
 
 struct sched_clock_data {
-        /*
-         * Raw spinlock - this is a special case: this might be called
-         * from within instrumentation code so we dont want to do any
-         * instrumentation ourselves.
-         */
-        raw_spinlock_t          lock;
-
         u64                     tick_raw;
         u64                     tick_gtod;
         u64                     clock;
@@ -80,7 +73,6 @@ void sched_clock_init(void)
         for_each_possible_cpu(cpu) {
                 struct sched_clock_data *scd = cpu_sdc(cpu);
 
-                scd->lock = (raw_spinlock_t)__RAW_SPIN_LOCK_UNLOCKED;
                 scd->tick_raw = 0;
                 scd->tick_gtod = ktime_now;
                 scd->clock = ktime_now;
@@ -109,14 +101,19 @@ static inline u64 wrap_max(u64 x, u64 y)
  *  - filter out backward motion
  *  - use the GTOD tick value to create a window to filter crazy TSC values
  */
-static u64 __update_sched_clock(struct sched_clock_data *scd, u64 now)
+static u64 sched_clock_local(struct sched_clock_data *scd)
 {
-        s64 delta = now - scd->tick_raw;
-        u64 clock, min_clock, max_clock;
+        u64 now, clock, old_clock, min_clock, max_clock;
+        s64 delta;
 
+again:
+        now = sched_clock();
+        delta = now - scd->tick_raw;
         if (unlikely(delta < 0))
                 delta = 0;
 
+        old_clock = scd->clock;
+
         /*
          * scd->clock = clamp(scd->tick_gtod + delta,
          *                    max(scd->tick_gtod, scd->clock),
@@ -124,84 +121,73 @@ static u64 __update_sched_clock(struct sched_clock_data *scd, u64 now)
          */
 
         clock = scd->tick_gtod + delta;
-        min_clock = wrap_max(scd->tick_gtod, scd->clock);
-        max_clock = wrap_max(scd->clock, scd->tick_gtod + TICK_NSEC);
+        min_clock = wrap_max(scd->tick_gtod, old_clock);
+        max_clock = wrap_max(old_clock, scd->tick_gtod + TICK_NSEC);
 
         clock = wrap_max(clock, min_clock);
         clock = wrap_min(clock, max_clock);
 
-        scd->clock = clock;
+        if (cmpxchg(&scd->clock, old_clock, clock) != old_clock)
+                goto again;
 
-        return scd->clock;
+        return clock;
 }
 
-static void lock_double_clock(struct sched_clock_data *data1,
-                                struct sched_clock_data *data2)
+static u64 sched_clock_remote(struct sched_clock_data *scd)
 {
-        if (data1 < data2) {
-                __raw_spin_lock(&data1->lock);
-                __raw_spin_lock(&data2->lock);
+        struct sched_clock_data *my_scd = this_scd();
+        u64 this_clock, remote_clock;
+        u64 *ptr, old_val, val;
+
+        sched_clock_local(my_scd);
+again:
+        this_clock = my_scd->clock;
+        remote_clock = scd->clock;
+
+        /*
+         * Use the opportunity that we have both locks
+         * taken to couple the two clocks: we take the
+         * larger time as the latest time for both
+         * runqueues. (this creates monotonic movement)
+         */
+        if (likely((s64)(remote_clock - this_clock) < 0)) {
+                ptr = &scd->clock;
+                old_val = remote_clock;
+                val = this_clock;
         } else {
-                __raw_spin_lock(&data2->lock);
-                __raw_spin_lock(&data1->lock);
+                /*
+                 * Should be rare, but possible:
+                 */
+                ptr = &my_scd->clock;
+                old_val = this_clock;
+                val = remote_clock;
         }
+
+        if (cmpxchg(ptr, old_val, val) != old_val)
+                goto again;
+
+        return val;
 }
 
 u64 sched_clock_cpu(int cpu)
 {
-        u64 now, clock, this_clock, remote_clock;
         struct sched_clock_data *scd;
+        u64 clock;
+
+        WARN_ON_ONCE(!irqs_disabled());
 
         if (sched_clock_stable)
                 return sched_clock();
 
-        scd = cpu_sdc(cpu);
-
-        /*
-         * Normally this is not called in NMI context - but if it is,
-         * trying to do any locking here is totally lethal.
-         */
-        if (unlikely(in_nmi()))
-                return scd->clock;
-
         if (unlikely(!sched_clock_running))
                 return 0ull;
 
-        WARN_ON_ONCE(!irqs_disabled());
-        now = sched_clock();
-
-        if (cpu != raw_smp_processor_id()) {
-                struct sched_clock_data *my_scd = this_scd();
-
-                lock_double_clock(scd, my_scd);
-
-                this_clock = __update_sched_clock(my_scd, now);
-                remote_clock = scd->clock;
-
-                /*
-                 * Use the opportunity that we have both locks
-                 * taken to couple the two clocks: we take the
-                 * larger time as the latest time for both
-                 * runqueues. (this creates monotonic movement)
-                 */
-                if (likely((s64)(remote_clock - this_clock) < 0)) {
-                        clock = this_clock;
-                        scd->clock = clock;
-                } else {
-                        /*
-                         * Should be rare, but possible:
-                         */
-                        clock = remote_clock;
-                        my_scd->clock = remote_clock;
-                }
-
-                __raw_spin_unlock(&my_scd->lock);
-        } else {
-                __raw_spin_lock(&scd->lock);
-                clock = __update_sched_clock(scd, now);
-        }
+        scd = cpu_sdc(cpu);
 
-        __raw_spin_unlock(&scd->lock);
+        if (cpu != smp_processor_id())
+                clock = sched_clock_remote(scd);
+        else
+                clock = sched_clock_local(scd);
 
         return clock;
 }
@@ -223,11 +209,9 @@ void sched_clock_tick(void)
         now_gtod = ktime_to_ns(ktime_get());
         now = sched_clock();
 
-        __raw_spin_lock(&scd->lock);
         scd->tick_raw = now;
         scd->tick_gtod = now_gtod;
-        __update_sched_clock(scd, now);
-        __raw_spin_unlock(&scd->lock);
+        sched_clock_local(scd);
 }
 
 /*
diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index 10d218ab69f2..990b188803ce 100644
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -513,6 +513,7 @@ static void update_curr(struct cfs_rq *cfs_rq)
         if (entity_is_task(curr)) {
                 struct task_struct *curtask = task_of(curr);
 
+                trace_sched_stat_runtime(curtask, delta_exec, curr->vruntime);
                 cpuacct_charge(curtask, delta_exec);
                 account_group_exec_runtime(curtask, delta_exec);
         }
diff --git a/kernel/trace/Makefile b/kernel/trace/Makefile
index 844164dca90a..26f03ac07c2b 100644
--- a/kernel/trace/Makefile
+++ b/kernel/trace/Makefile
@@ -42,7 +42,6 @@ obj-$(CONFIG_BOOT_TRACER) += trace_boot.o
 obj-$(CONFIG_FUNCTION_GRAPH_TRACER) += trace_functions_graph.o
 obj-$(CONFIG_TRACE_BRANCH_PROFILING) += trace_branch.o
 obj-$(CONFIG_HW_BRANCH_TRACER) += trace_hw_branches.o
-obj-$(CONFIG_POWER_TRACER) += trace_power.o
 obj-$(CONFIG_KMEMTRACE) += kmemtrace.o
 obj-$(CONFIG_WORKQUEUE_TRACER) += trace_workqueue.o
 obj-$(CONFIG_BLK_DEV_IO_TRACE) += blktrace.o
@@ -54,5 +53,6 @@ obj-$(CONFIG_EVENT_TRACING) += trace_export.o
 obj-$(CONFIG_FTRACE_SYSCALLS) += trace_syscalls.o
 obj-$(CONFIG_EVENT_PROFILE) += trace_event_profile.o
 obj-$(CONFIG_EVENT_TRACING) += trace_events_filter.o
+obj-$(CONFIG_EVENT_TRACING) += power-traces.o
 
 libftrace-y := ftrace.o
diff --git a/kernel/trace/power-traces.c b/kernel/trace/power-traces.c
new file mode 100644
index 000000000000..e06c6e3d56a3
--- /dev/null
+++ b/kernel/trace/power-traces.c
@@ -0,0 +1,20 @@
+/*
+ * Power trace points
+ *
+ * Copyright (C) 2009 Arjan van de Ven <arjan@linux.intel.com>
+ */
+
+#include <linux/string.h>
+#include <linux/types.h>
+#include <linux/workqueue.h>
+#include <linux/sched.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+
+#define CREATE_TRACE_POINTS
+#include <trace/events/power.h>
+
+EXPORT_TRACEPOINT_SYMBOL_GPL(power_start);
+EXPORT_TRACEPOINT_SYMBOL_GPL(power_end);
+EXPORT_TRACEPOINT_SYMBOL_GPL(power_frequency);
+
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index 86bcff94791a..405cb850b75d 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -11,7 +11,6 @@
 #include <linux/ftrace.h>
 #include <trace/boot.h>
 #include <linux/kmemtrace.h>
-#include <trace/power.h>
 
 #include <linux/trace_seq.h>
 #include <linux/ftrace_event.h>
@@ -37,7 +36,6 @@ enum trace_type {
         TRACE_HW_BRANCHES,
         TRACE_KMEM_ALLOC,
         TRACE_KMEM_FREE,
-        TRACE_POWER,
         TRACE_BLK,
 
         __TRACE_LAST_TYPE,
@@ -207,7 +205,6 @@ extern void __ftrace_bad_type(void);
                 IF_ASSIGN(var, ent, struct ftrace_graph_ret_entry,      \
                           TRACE_GRAPH_RET);             \
                 IF_ASSIGN(var, ent, struct hw_branch_entry, TRACE_HW_BRANCHES);\
-                IF_ASSIGN(var, ent, struct trace_power, TRACE_POWER); \
                 IF_ASSIGN(var, ent, struct kmemtrace_alloc_entry,       \
                           TRACE_KMEM_ALLOC);    \
                 IF_ASSIGN(var, ent, struct kmemtrace_free_entry,        \
diff --git a/kernel/trace/trace_entries.h b/kernel/trace/trace_entries.h
index a431748ddd6e..ead3d724599d 100644
--- a/kernel/trace/trace_entries.h
+++ b/kernel/trace/trace_entries.h
@@ -330,23 +330,6 @@ FTRACE_ENTRY(hw_branch, hw_branch_entry,
         F_printk("from: %llx to: %llx", __entry->from, __entry->to)
 );
 
-FTRACE_ENTRY(power, trace_power,
-
-        TRACE_POWER,
-
-        F_STRUCT(
-                __field_struct( struct power_trace,     state_data      )
-                __field_desc(   s64,    state_data,     stamp           )
-                __field_desc(   s64,    state_data,     end             )
-                __field_desc(   int,    state_data,     type            )
-                __field_desc(   int,    state_data,     state           )
-        ),
-
-        F_printk("%llx->%llx type:%u state:%u",
-                 __entry->stamp, __entry->end,
-                 __entry->type, __entry->state)
-);
-
 FTRACE_ENTRY(kmem_alloc, kmemtrace_alloc_entry,
 
         TRACE_KMEM_ALLOC,
diff --git a/kernel/trace/trace_power.c b/kernel/trace/trace_power.c
deleted file mode 100644
index fe1a00f1445a..000000000000
--- a/kernel/trace/trace_power.c
+++ /dev/null
@@ -1,218 +0,0 @@
-/*
- * ring buffer based C-state tracer
- *
- * Arjan van de Ven <arjan@linux.intel.com>
- * Copyright (C) 2008 Intel Corporation
- *
- * Much is borrowed from trace_boot.c which is
- * Copyright (C) 2008 Frederic Weisbecker <fweisbec@gmail.com>
- *
- */
-
-#include <linux/init.h>
-#include <linux/debugfs.h>
-#include <trace/power.h>
-#include <linux/kallsyms.h>
-#include <linux/module.h>
-
-#include "trace.h"
-#include "trace_output.h"
-
-static struct trace_array *power_trace;
-static int __read_mostly trace_power_enabled;
-
-static void probe_power_start(struct power_trace *it, unsigned int type,
-                                unsigned int level)
-{
-        if (!trace_power_enabled)
-                return;
-
-        memset(it, 0, sizeof(struct power_trace));
-        it->state = level;
-        it->type = type;
-        it->stamp = ktime_get();
-}
-
-
-static void probe_power_end(struct power_trace *it)
-{
-        struct ftrace_event_call *call = &event_power;
-        struct ring_buffer_event *event;
-        struct ring_buffer *buffer;
-        struct trace_power *entry;
-        struct trace_array_cpu *data;
-        struct trace_array *tr = power_trace;
-
-        if (!trace_power_enabled)
-                return;
-
-        buffer = tr->buffer;
-
-        preempt_disable();
-        it->end = ktime_get();
-        data = tr->data[smp_processor_id()];
-
-        event = trace_buffer_lock_reserve(buffer, TRACE_POWER,
-                                          sizeof(*entry), 0, 0);
-        if (!event)
-                goto out;
-        entry   = ring_buffer_event_data(event);
-        entry->state_data = *it;
-        if (!filter_check_discard(call, entry, buffer, event))
-                trace_buffer_unlock_commit(buffer, event, 0, 0);
- out:
-        preempt_enable();
-}
-
-static void probe_power_mark(struct power_trace *it, unsigned int type,
-                                unsigned int level)
-{
-        struct ftrace_event_call *call = &event_power;
-        struct ring_buffer_event *event;
-        struct ring_buffer *buffer;
-        struct trace_power *entry;
-        struct trace_array_cpu *data;
-        struct trace_array *tr = power_trace;
-
-        if (!trace_power_enabled)
-                return;
-
-        buffer = tr->buffer;
-
-        memset(it, 0, sizeof(struct power_trace));
-        it->state = level;
-        it->type = type;
-        it->stamp = ktime_get();
-        preempt_disable();
-        it->end = it->stamp;
-        data = tr->data[smp_processor_id()];
-
-        event = trace_buffer_lock_reserve(buffer, TRACE_POWER,
-                                          sizeof(*entry), 0, 0);
-        if (!event)
-                goto out;
-        entry   = ring_buffer_event_data(event);
-        entry->state_data = *it;
-        if (!filter_check_discard(call, entry, buffer, event))
-                trace_buffer_unlock_commit(buffer, event, 0, 0);
- out:
-        preempt_enable();
-}
-
-static int tracing_power_register(void)
-{
-        int ret;
-
-        ret = register_trace_power_start(probe_power_start);
-        if (ret) {
-                pr_info("power trace: Couldn't activate tracepoint"
-                        " probe to trace_power_start\n");
-                return ret;
-        }
-        ret = register_trace_power_end(probe_power_end);
-        if (ret) {
-                pr_info("power trace: Couldn't activate tracepoint"
-                        " probe to trace_power_end\n");
-                goto fail_start;
-        }
-        ret = register_trace_power_mark(probe_power_mark);
-        if (ret) {
-                pr_info("power trace: Couldn't activate tracepoint"
-                        " probe to trace_power_mark\n");
-                goto fail_end;
-        }
-        return ret;
-fail_end:
-        unregister_trace_power_end(probe_power_end);
-fail_start:
-        unregister_trace_power_start(probe_power_start);
-        return ret;
-}
-
-static void start_power_trace(struct trace_array *tr)
-{
-        trace_power_enabled = 1;
-}
-
-static void stop_power_trace(struct trace_array *tr)
-{
-        trace_power_enabled = 0;
-}
-
-static void power_trace_reset(struct trace_array *tr)
-{
-        trace_power_enabled = 0;
-        unregister_trace_power_start(probe_power_start);
-        unregister_trace_power_end(probe_power_end);
-        unregister_trace_power_mark(probe_power_mark);
-}
-
-
-static int power_trace_init(struct trace_array *tr)
-{
-        power_trace = tr;
-
-        trace_power_enabled = 1;
-        tracing_power_register();
-
-        tracing_reset_online_cpus(tr);
-        return 0;
-}
-
-static enum print_line_t power_print_line(struct trace_iterator *iter)
-{
-        int ret = 0;
-        struct trace_entry *entry = iter->ent;
-        struct trace_power *field ;
-        struct power_trace *it;
-        struct trace_seq *s = &iter->seq;
-        struct timespec stamp;
-        struct timespec duration;
-
-        trace_assign_type(field, entry);
-        it = &field->state_data;
-        stamp = ktime_to_timespec(it->stamp);
-        duration = ktime_to_timespec(ktime_sub(it->end, it->stamp));
-
-        if (entry->type == TRACE_POWER) {
-                if (it->type == POWER_CSTATE)
-                        ret = trace_seq_printf(s, "[%5ld.%09ld] CSTATE: Going to C%i on cpu %i for %ld.%09ld\n",
-                                          stamp.tv_sec,
-                                          stamp.tv_nsec,
-                                          it->state, iter->cpu,
-                                          duration.tv_sec,
-                                          duration.tv_nsec);
-                if (it->type == POWER_PSTATE)
-                        ret = trace_seq_printf(s, "[%5ld.%09ld] PSTATE: Going to P%i on cpu %i\n",
-                                          stamp.tv_sec,
-                                          stamp.tv_nsec,
-                                          it->state, iter->cpu);
-                if (!ret)
-                        return TRACE_TYPE_PARTIAL_LINE;
-                return TRACE_TYPE_HANDLED;
-        }
-        return TRACE_TYPE_UNHANDLED;
-}
-
-static void power_print_header(struct seq_file *s)
-{
-        seq_puts(s, "#   TIMESTAMP      STATE  EVENT\n");
-        seq_puts(s, "#       |            |      |\n");
-}
-
-static struct tracer power_tracer __read_mostly =
-{
-        .name           = "power",
-        .init           = power_trace_init,
-        .start          = start_power_trace,
-        .stop           = stop_power_trace,
-        .reset          = power_trace_reset,
-        .print_line     = power_print_line,
-        .print_header   = power_print_header,
-};
-
-static int init_power_trace(void)
-{
-        return register_tracer(&power_tracer);
-}
-device_initcall(init_power_trace);
diff --git a/scripts/tracing/power.pl b/scripts/tracing/power.pl
deleted file mode 100644
index 4f729b3501e0..000000000000
--- a/scripts/tracing/power.pl
+++ /dev/null
@@ -1,108 +0,0 @@
-#!/usr/bin/perl
-
-# Copyright 2008, Intel Corporation
-#
-# This file is part of the Linux kernel
-#
-# This program file is free software; you can redistribute it and/or modify it
-# under the terms of the GNU General Public License as published by the
-# Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful, but WITHOUT
-# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
-# for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program in a file named COPYING; if not, write to the
-# Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor,
-# Boston, MA 02110-1301 USA
-#
-# Authors:
-#       Arjan van de Ven <arjan@linux.intel.com>
-
-
-#
-# This script turns a cstate ftrace output into a SVG graphic that shows
-# historic C-state information
-#
-#
-#       cat /sys/kernel/debug/tracing/trace | perl power.pl > out.svg
-#
-
-my @styles;
-my $base = 0;
-
-my @pstate_last;
-my @pstate_level;
-
-$styles[0] = "fill:rgb(0,0,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
-$styles[1] = "fill:rgb(0,255,0);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
-$styles[2] = "fill:rgb(255,0,20);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
-$styles[3] = "fill:rgb(255,255,20);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
-$styles[4] = "fill:rgb(255,0,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
-$styles[5] = "fill:rgb(0,255,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
-$styles[6] = "fill:rgb(0,128,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
-$styles[7] = "fill:rgb(0,255,128);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
-$styles[8] = "fill:rgb(0,25,20);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
-
-
-print "<?xml version=\"1.0\" standalone=\"no\"?> \n";
-print "<svg width=\"10000\" height=\"100%\" version=\"1.1\" xmlns=\"http://www.w3.org/2000/svg\">\n";
-
-my $scale = 30000.0;
-while (<>) {
-        my $line = $_;
-        if ($line =~ /([0-9\.]+)\] CSTATE: Going to C([0-9]) on cpu ([0-9]+) for ([0-9\.]+)/) {
-                if ($base == 0) {
-                        $base = $1;
-                }
-                my $time = $1 - $base;
-                $time = $time * $scale;
-                my $C = $2;
-                my $cpu = $3;
-                my $y = 400 * $cpu;
-                my $duration = $4 * $scale;
-                my $msec = int($4 * 100000)/100.0;
-                my $height = $C * 20;
-                $style = $styles[$C];
-
-                $y = $y + 140 - $height;
-
-                $x2 = $time + 4;
-                $y2 = $y + 4;
-
-
-                print "<rect x=\"$time\" width=\"$duration\" y=\"$y\" height=\"$height\" style=\"$style\"/>\n";
-                print "<text transform=\"translate($x2,$y2) rotate(90)\">C$C $msec</text>\n";
-        }
-        if ($line =~ /([0-9\.]+)\] PSTATE: Going to P([0-9]) on cpu ([0-9]+)/) {
-                my $time = $1 - $base;
-                my $state = $2;
-                my $cpu = $3;
-
-                if (defined($pstate_last[$cpu])) {
-                        my $from = $pstate_last[$cpu];
-                        my $oldstate = $pstate_state[$cpu];
-                        my $duration = ($time-$from) * $scale;
-
-                        $from = $from * $scale;
-                        my $to = $from + $duration;
-                        my $height = 140 - ($oldstate * (140/8));
-
-                        my $y = 400 * $cpu + 200 + $height;
-                        my $y2 = $y+4;
-                        my $style = $styles[8];
-
-                        print "<rect x=\"$from\" y=\"$y\" width=\"$duration\" height=\"5\" style=\"$style\"/>\n";
-                        print "<text transform=\"translate($from,$y2)\">P$oldstate (cpu $cpu)</text>\n";
-                };
-
-                $pstate_last[$cpu] = $time;
-                $pstate_state[$cpu] = $state;
-        }
-}
-
-
-print "</svg>\n";
diff --git a/tools/perf/Documentation/perf-sched.txt b/tools/perf/Documentation/perf-sched.txt
new file mode 100644
index 000000000000..1ce79198997b
--- /dev/null
+++ b/tools/perf/Documentation/perf-sched.txt
@@ -0,0 +1,41 @@
+perf-sched(1)
+==============
+
+NAME
+----
+perf-sched - Tool to trace/measure scheduler properties (latencies)
+
+SYNOPSIS
+--------
+[verse]
+'perf sched' {record|latency|replay|trace}
+
+DESCRIPTION
+-----------
+There's four variants of perf sched:
+
+  'perf sched record <command>' to record the scheduling events
+  of an arbitrary workload.
+
+  'perf sched latency' to report the per task scheduling latencies
+  and other scheduling properties of the workload.
+
+  'perf sched trace' to see a detailed trace of the workload that
+  was recorded.
+
+  'perf sched replay' to simulate the workload that was recorded
+  via perf sched record. (this is done by starting up mockup threads
+  that mimic the workload based on the events in the trace. These
+  threads can then replay the timings (CPU runtime and sleep patterns)
+  of the workload as it occured when it was recorded - and can repeat
+  it a number of times, measuring its performance.)
+
+OPTIONS
+-------
+-D::
+--dump-raw-trace=::
+        Display verbose dump of the sched data.
+
+SEE ALSO
+--------
+linkperf:perf-record[1]
diff --git a/tools/perf/Documentation/perf-timechart.txt b/tools/perf/Documentation/perf-timechart.txt
new file mode 100644
index 000000000000..61e0104c6270
--- /dev/null
+++ b/tools/perf/Documentation/perf-timechart.txt
@@ -0,0 +1,35 @@
+perf-timechart(1)
+=================
+
+NAME
+----
+perf-timechart - Tool to visualize total system behavior during a workload
+
+SYNOPSIS
+--------
+[verse]
+'perf timechart' {record}
+
+DESCRIPTION
+-----------
+There are two variants of perf timechart:
+
+  'perf timechart record <command>' to record the system level events
+  of an arbitrary workload.
+
+  'perf timechart' to turn a trace into a Scalable Vector Graphics file,
+  that can be viewed with popular SVG viewers such as 'Inkscape'.
+
+OPTIONS
+-------
+-o::
+--output=::
+        Select the output file (default: output.svg)
+-i::
+--input=::
+        Select the input file (default: perf.data)
+
+
+SEE ALSO
+--------
+linkperf:perf-record[1]
diff --git a/tools/perf/Documentation/perf-trace.txt b/tools/perf/Documentation/perf-trace.txt
new file mode 100644
index 000000000000..41ed75398ca9
--- /dev/null
+++ b/tools/perf/Documentation/perf-trace.txt
@@ -0,0 +1,25 @@
+perf-trace(1)
+==============
+
+NAME
+----
+perf-trace - Read perf.data (created by perf record) and display trace output
+
+SYNOPSIS
+--------
+[verse]
+'perf trace' [-i <file> | --input=file] symbol_name
+
+DESCRIPTION
+-----------
+This command reads the input file and displays the trace recorded.
+
+OPTIONS
+-------
+-D::
+--dump-raw-trace=::
+        Display verbose dump of the trace data.
+
+SEE ALSO
+--------
+linkperf:perf-record[1]
diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index 9f8d207a91bf..0aba8b6e9c54 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -373,13 +373,16 @@ LIB_OBJS += util/thread.o
 LIB_OBJS += util/trace-event-parse.o
 LIB_OBJS += util/trace-event-read.o
 LIB_OBJS += util/trace-event-info.o
+LIB_OBJS += util/svghelper.o
 
 BUILTIN_OBJS += builtin-annotate.o
 BUILTIN_OBJS += builtin-help.o
+BUILTIN_OBJS += builtin-sched.o
 BUILTIN_OBJS += builtin-list.o
 BUILTIN_OBJS += builtin-record.o
 BUILTIN_OBJS += builtin-report.o
 BUILTIN_OBJS += builtin-stat.o
+BUILTIN_OBJS += builtin-timechart.o
 BUILTIN_OBJS += builtin-top.o
 BUILTIN_OBJS += builtin-trace.o
 
@@ -710,6 +713,12 @@ builtin-help.o: builtin-help.c common-cmds.h PERF-CFLAGS
                 '-DPERF_MAN_PATH="$(mandir_SQ)"' \
                 '-DPERF_INFO_PATH="$(infodir_SQ)"' $<
 
+builtin-timechart.o: builtin-timechart.c common-cmds.h PERF-CFLAGS
+        $(QUIET_CC)$(CC) -o $*.o -c $(ALL_CFLAGS) \
+                '-DPERF_HTML_PATH="$(htmldir_SQ)"' \
+                '-DPERF_MAN_PATH="$(mandir_SQ)"' \
+                '-DPERF_INFO_PATH="$(infodir_SQ)"' $<
+
 $(BUILT_INS): perf$X
         $(QUIET_BUILT_IN)$(RM) $@ && \
         ln perf$X $@ 2>/dev/null || \
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 99a12fe86e9f..2459e5a22ed8 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -48,6 +48,8 @@ static int			call_graph			= 0;
 static int                      inherit_stat                    = 0;
 static int                      no_samples                      = 0;
 static int                      sample_address                  = 0;
+static int                      multiplex                       = 0;
+static int                      multiplex_fd                    = -1;
 
 static long                     samples;
 static struct timeval           last_read;
@@ -470,19 +472,28 @@ try_again:
          */
         if (group && group_fd == -1)
                 group_fd = fd[nr_cpu][counter];
+        if (multiplex && multiplex_fd == -1)
+                multiplex_fd = fd[nr_cpu][counter];
 
-        event_array[nr_poll].fd = fd[nr_cpu][counter];
-        event_array[nr_poll].events = POLLIN;
-        nr_poll++;
-
-        mmap_array[nr_cpu][counter].counter = counter;
-        mmap_array[nr_cpu][counter].prev = 0;
-        mmap_array[nr_cpu][counter].mask = mmap_pages*page_size - 1;
-        mmap_array[nr_cpu][counter].base = mmap(NULL, (mmap_pages+1)*page_size,
-                        PROT_READ|PROT_WRITE, MAP_SHARED, fd[nr_cpu][counter], 0);
-        if (mmap_array[nr_cpu][counter].base == MAP_FAILED) {
-                error("failed to mmap with %d (%s)\n", errno, strerror(errno));
-                exit(-1);
+        if (multiplex && fd[nr_cpu][counter] != multiplex_fd) {
+                int ret;
+
+                ret = ioctl(fd[nr_cpu][counter], PERF_COUNTER_IOC_SET_OUTPUT, multiplex_fd);
+                assert(ret != -1);
+        } else {
+                event_array[nr_poll].fd = fd[nr_cpu][counter];
+                event_array[nr_poll].events = POLLIN;
+                nr_poll++;
+
+                mmap_array[nr_cpu][counter].counter = counter;
+                mmap_array[nr_cpu][counter].prev = 0;
+                mmap_array[nr_cpu][counter].mask = mmap_pages*page_size - 1;
+                mmap_array[nr_cpu][counter].base = mmap(NULL, (mmap_pages+1)*page_size,
+                                PROT_READ|PROT_WRITE, MAP_SHARED, fd[nr_cpu][counter], 0);
+                if (mmap_array[nr_cpu][counter].base == MAP_FAILED) {
+                        error("failed to mmap with %d (%s)\n", errno, strerror(errno));
+                        exit(-1);
+                }
         }
 
         ioctl(fd[nr_cpu][counter], PERF_COUNTER_IOC_ENABLE);
@@ -513,6 +524,7 @@ static int __cmd_record(int argc, const char **argv)
         pid_t pid = 0;
         int flags;
         int ret;
+        unsigned long waking = 0;
 
         page_size = sysconf(_SC_PAGE_SIZE);
         nr_cpus = sysconf(_SC_NPROCESSORS_ONLN);
@@ -614,17 +626,29 @@ static int __cmd_record(int argc, const char **argv)
                 int hits = samples;
 
                 for (i = 0; i < nr_cpu; i++) {
-                        for (counter = 0; counter < nr_counters; counter++)
-                                mmap_read(&mmap_array[i][counter]);
+                        for (counter = 0; counter < nr_counters; counter++) {
+                                if (mmap_array[i][counter].base)
+                                        mmap_read(&mmap_array[i][counter]);
+                        }
                 }
 
                 if (hits == samples) {
                         if (done)
                                 break;
-                        ret = poll(event_array, nr_poll, 100);
+                        ret = poll(event_array, nr_poll, -1);
+                        waking++;
+                }
+
+                if (done) {
+                        for (i = 0; i < nr_cpu; i++) {
+                                for (counter = 0; counter < nr_counters; counter++)
+                                        ioctl(fd[i][counter], PERF_COUNTER_IOC_DISABLE);
+                        }
                 }
         }
 
+        fprintf(stderr, "[ perf record: Woken up %ld times to write data ]\n", waking);
+
         /*
          * Approximate RIP event size: 24 bytes.
          */
@@ -681,6 +705,8 @@ static const struct option options[] = {
                     "Sample addresses"),
         OPT_BOOLEAN('n', "no-samples", &no_samples,
                     "don't sample"),
+        OPT_BOOLEAN('M', "multiplex", &multiplex,
+                    "multiplex counter output in a single channel"),
         OPT_END()
 };
 
diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c
new file mode 100644
index 000000000000..275d79c6627a
--- /dev/null
+++ b/tools/perf/builtin-sched.c
@@ -0,0 +1,2004 @@
+#include "builtin.h"
+#include "perf.h"
+
+#include "util/util.h"
+#include "util/cache.h"
+#include "util/symbol.h"
+#include "util/thread.h"
+#include "util/header.h"
+
+#include "util/parse-options.h"
+#include "util/trace-event.h"
+
+#include "util/debug.h"
+
+#include <sys/types.h>
+#include <sys/prctl.h>
+
+#include <semaphore.h>
+#include <pthread.h>
+#include <math.h>
+
+static char                     const *input_name = "perf.data";
+static int                      input;
+static unsigned long            page_size;
+static unsigned long            mmap_window = 32;
+
+static unsigned long            total_comm = 0;
+
+static struct rb_root           threads;
+static struct thread            *last_match;
+
+static struct perf_header       *header;
+static u64                      sample_type;
+
+static char                     default_sort_order[] = "avg, max, switch, runtime";
+static char                     *sort_order = default_sort_order;
+
+#define PR_SET_NAME             15               /* Set process name */
+#define MAX_CPUS                4096
+
+#define BUG_ON(x)               assert(!(x))
+
+static u64                      run_measurement_overhead;
+static u64                      sleep_measurement_overhead;
+
+#define COMM_LEN                20
+#define SYM_LEN                 129
+
+#define MAX_PID                 65536
+
+static unsigned long            nr_tasks;
+
+struct sched_atom;
+
+struct task_desc {
+        unsigned long           nr;
+        unsigned long           pid;
+        char                    comm[COMM_LEN];
+
+        unsigned long           nr_events;
+        unsigned long           curr_event;
+        struct sched_atom       **atoms;
+
+        pthread_t               thread;
+        sem_t                   sleep_sem;
+
+        sem_t                   ready_for_work;
+        sem_t                   work_done_sem;
+
+        u64                     cpu_usage;
+};
+
+enum sched_event_type {
+        SCHED_EVENT_RUN,
+        SCHED_EVENT_SLEEP,
+        SCHED_EVENT_WAKEUP,
+};
+
+struct sched_atom {
+        enum sched_event_type   type;
+        u64                     timestamp;
+        u64                     duration;
+        unsigned long           nr;
+        int                     specific_wait;
+        sem_t                   *wait_sem;
+        struct task_desc        *wakee;
+};
+
+static struct task_desc         *pid_to_task[MAX_PID];
+
+static struct task_desc         **tasks;
+
+static pthread_mutex_t          start_work_mutex = PTHREAD_MUTEX_INITIALIZER;
+static u64                      start_time;
+
+static pthread_mutex_t          work_done_wait_mutex = PTHREAD_MUTEX_INITIALIZER;
+
+static unsigned long            nr_run_events;
+static unsigned long            nr_sleep_events;
+static unsigned long            nr_wakeup_events;
+
+static unsigned long            nr_sleep_corrections;
+static unsigned long            nr_run_events_optimized;
+
+static unsigned long            targetless_wakeups;
+static unsigned long            multitarget_wakeups;
+
+static u64                      cpu_usage;
+static u64                      runavg_cpu_usage;
+static u64                      parent_cpu_usage;
+static u64                      runavg_parent_cpu_usage;
+
+static unsigned long            nr_runs;
+static u64                      sum_runtime;
+static u64                      sum_fluct;
+static u64                      run_avg;
+
+static unsigned long            replay_repeat = 10;
+static unsigned long            nr_timestamps;
+static unsigned long            nr_unordered_timestamps;
+static unsigned long            nr_state_machine_bugs;
+static unsigned long            nr_context_switch_bugs;
+static unsigned long            nr_events;
+static unsigned long            nr_lost_chunks;
+static unsigned long            nr_lost_events;
+
+#define TASK_STATE_TO_CHAR_STR "RSDTtZX"
+
+enum thread_state {
+        THREAD_SLEEPING = 0,
+        THREAD_WAIT_CPU,
+        THREAD_SCHED_IN,
+        THREAD_IGNORE
+};
+
+struct work_atom {
+        struct list_head        list;
+        enum thread_state       state;
+        u64                     sched_out_time;
+        u64                     wake_up_time;
+        u64                     sched_in_time;
+        u64                     runtime;
+};
+
+struct work_atoms {
+        struct list_head        work_list;
+        struct thread           *thread;
+        struct rb_node          node;
+        u64                     max_lat;
+        u64                     total_lat;
+        u64                     nb_atoms;
+        u64                     total_runtime;
+};
+
+typedef int (*sort_fn_t)(struct work_atoms *, struct work_atoms *);
+
+static struct rb_root           atom_root, sorted_atom_root;
+
+static u64                      all_runtime;
+static u64                      all_count;
+
+
+static u64 get_nsecs(void)
+{
+        struct timespec ts;
+
+        clock_gettime(CLOCK_MONOTONIC, &ts);
+
+        return ts.tv_sec * 1000000000ULL + ts.tv_nsec;
+}
+
+static void burn_nsecs(u64 nsecs)
+{
+        u64 T0 = get_nsecs(), T1;
+
+        do {
+                T1 = get_nsecs();
+        } while (T1 + run_measurement_overhead < T0 + nsecs);
+}
+
+static void sleep_nsecs(u64 nsecs)
+{
+        struct timespec ts;
+
+        ts.tv_nsec = nsecs % 999999999;
+        ts.tv_sec = nsecs / 999999999;
+
+        nanosleep(&ts, NULL);
+}
+
+static void calibrate_run_measurement_overhead(void)
+{
+        u64 T0, T1, delta, min_delta = 1000000000ULL;
+        int i;
+
+        for (i = 0; i < 10; i++) {
+                T0 = get_nsecs();
+                burn_nsecs(0);
+                T1 = get_nsecs();
+                delta = T1-T0;
+                min_delta = min(min_delta, delta);
+        }
+        run_measurement_overhead = min_delta;
+
+        printf("run measurement overhead: %Ld nsecs\n", min_delta);
+}
+
+static void calibrate_sleep_measurement_overhead(void)
+{
+        u64 T0, T1, delta, min_delta = 1000000000ULL;
+        int i;
+
+        for (i = 0; i < 10; i++) {
+                T0 = get_nsecs();
+                sleep_nsecs(10000);
+                T1 = get_nsecs();
+                delta = T1-T0;
+                min_delta = min(min_delta, delta);
+        }
+        min_delta -= 10000;
+        sleep_measurement_overhead = min_delta;
+
+        printf("sleep measurement overhead: %Ld nsecs\n", min_delta);
+}
+
+static struct sched_atom *
+get_new_event(struct task_desc *task, u64 timestamp)
+{
+        struct sched_atom *event = calloc(1, sizeof(*event));
+        unsigned long idx = task->nr_events;
+        size_t size;
+
+        event->timestamp = timestamp;
+        event->nr = idx;
+
+        task->nr_events++;
+        size = sizeof(struct sched_atom *) * task->nr_events;
+        task->atoms = realloc(task->atoms, size);
+        BUG_ON(!task->atoms);
+
+        task->atoms[idx] = event;
+
+        return event;
+}
+
+static struct sched_atom *last_event(struct task_desc *task)
+{
+        if (!task->nr_events)
+                return NULL;
+
+        return task->atoms[task->nr_events - 1];
+}
+
+static void
+add_sched_event_run(struct task_desc *task, u64 timestamp, u64 duration)
+{
+        struct sched_atom *event, *curr_event = last_event(task);
+
+        /*
+         * optimize an existing RUN event by merging this one
+         * to it:
+         */
+        if (curr_event && curr_event->type == SCHED_EVENT_RUN) {
+                nr_run_events_optimized++;
+                curr_event->duration += duration;
+                return;
+        }
+
+        event = get_new_event(task, timestamp);
+
+        event->type = SCHED_EVENT_RUN;
+        event->duration = duration;
+
+        nr_run_events++;
+}
+
+static void
+add_sched_event_wakeup(struct task_desc *task, u64 timestamp,
+                       struct task_desc *wakee)
+{
+        struct sched_atom *event, *wakee_event;
+
+        event = get_new_event(task, timestamp);
+        event->type = SCHED_EVENT_WAKEUP;
+        event->wakee = wakee;
+
+        wakee_event = last_event(wakee);
+        if (!wakee_event || wakee_event->type != SCHED_EVENT_SLEEP) {
+                targetless_wakeups++;
+                return;
+        }
+        if (wakee_event->wait_sem) {
+                multitarget_wakeups++;
+                return;
+        }
+
+        wakee_event->wait_sem = calloc(1, sizeof(*wakee_event->wait_sem));
+        sem_init(wakee_event->wait_sem, 0, 0);
+        wakee_event->specific_wait = 1;
+        event->wait_sem = wakee_event->wait_sem;
+
+        nr_wakeup_events++;
+}
+
+static void
+add_sched_event_sleep(struct task_desc *task, u64 timestamp,
+                      u64 task_state __used)
+{
+        struct sched_atom *event = get_new_event(task, timestamp);
+
+        event->type = SCHED_EVENT_SLEEP;
+
+        nr_sleep_events++;
+}
+
+static struct task_desc *register_pid(unsigned long pid, const char *comm)
+{
+        struct task_desc *task;
+
+        BUG_ON(pid >= MAX_PID);
+
+        task = pid_to_task[pid];
+
+        if (task)
+                return task;
+
+        task = calloc(1, sizeof(*task));
+        task->pid = pid;
+        task->nr = nr_tasks;
+        strcpy(task->comm, comm);
+        /*
+         * every task starts in sleeping state - this gets ignored
+         * if there's no wakeup pointing to this sleep state:
+         */
+        add_sched_event_sleep(task, 0, 0);
+
+        pid_to_task[pid] = task;
+        nr_tasks++;
+        tasks = realloc(tasks, nr_tasks*sizeof(struct task_task *));
+        BUG_ON(!tasks);
+        tasks[task->nr] = task;
+
+        if (verbose)
+                printf("registered task #%ld, PID %ld (%s)\n", nr_tasks, pid, comm);
+
+        return task;
+}
+
+
+static void print_task_traces(void)
+{
+        struct task_desc *task;
+        unsigned long i;
+
+        for (i = 0; i < nr_tasks; i++) {
+                task = tasks[i];
+                printf("task %6ld (%20s:%10ld), nr_events: %ld\n",
+                        task->nr, task->comm, task->pid, task->nr_events);
+        }
+}
+
+static void add_cross_task_wakeups(void)
+{
+        struct task_desc *task1, *task2;
+        unsigned long i, j;
+
+        for (i = 0; i < nr_tasks; i++) {
+                task1 = tasks[i];
+                j = i + 1;
+                if (j == nr_tasks)
+                        j = 0;
+                task2 = tasks[j];
+                add_sched_event_wakeup(task1, 0, task2);
+        }
+}
+
+static void
+process_sched_event(struct task_desc *this_task __used, struct sched_atom *atom)
+{
+        int ret = 0;
+        u64 now;
+        long long delta;
+
+        now = get_nsecs();
+        delta = start_time + atom->timestamp - now;
+
+        switch (atom->type) {
+                case SCHED_EVENT_RUN:
+                        burn_nsecs(atom->duration);
+                        break;
+                case SCHED_EVENT_SLEEP:
+                        if (atom->wait_sem)
+                                ret = sem_wait(atom->wait_sem);
+                        BUG_ON(ret);
+                        break;
+                case SCHED_EVENT_WAKEUP:
+                        if (atom->wait_sem)
+                                ret = sem_post(atom->wait_sem);
+                        BUG_ON(ret);
+                        break;
+                default:
+                        BUG_ON(1);
+        }
+}
+
+static u64 get_cpu_usage_nsec_parent(void)
+{
+        struct rusage ru;
+        u64 sum;
+        int err;
+
+        err = getrusage(RUSAGE_SELF, &ru);
+        BUG_ON(err);
+
+        sum =  ru.ru_utime.tv_sec*1e9 + ru.ru_utime.tv_usec*1e3;
+        sum += ru.ru_stime.tv_sec*1e9 + ru.ru_stime.tv_usec*1e3;
+
+        return sum;
+}
+
+static u64 get_cpu_usage_nsec_self(void)
+{
+        char filename [] = "/proc/1234567890/sched";
+        unsigned long msecs, nsecs;
+        char *line = NULL;
+        u64 total = 0;
+        size_t len = 0;
+        ssize_t chars;
+        FILE *file;
+        int ret;
+
+        sprintf(filename, "/proc/%d/sched", getpid());
+        file = fopen(filename, "r");
+        BUG_ON(!file);
+
+        while ((chars = getline(&line, &len, file)) != -1) {
+                ret = sscanf(line, "se.sum_exec_runtime : %ld.%06ld\n",
+                        &msecs, &nsecs);
+                if (ret == 2) {
+                        total = msecs*1e6 + nsecs;
+                        break;
+                }
+        }
+        if (line)
+                free(line);
+        fclose(file);
+
+        return total;
+}
+
+static void *thread_func(void *ctx)
+{
+        struct task_desc *this_task = ctx;
+        u64 cpu_usage_0, cpu_usage_1;
+        unsigned long i, ret;
+        char comm2[22];
+
+        sprintf(comm2, ":%s", this_task->comm);
+        prctl(PR_SET_NAME, comm2);
+
+again:
+        ret = sem_post(&this_task->ready_for_work);
+        BUG_ON(ret);
+        ret = pthread_mutex_lock(&start_work_mutex);
+        BUG_ON(ret);
+        ret = pthread_mutex_unlock(&start_work_mutex);
+        BUG_ON(ret);
+
+        cpu_usage_0 = get_cpu_usage_nsec_self();
+
+        for (i = 0; i < this_task->nr_events; i++) {
+                this_task->curr_event = i;
+                process_sched_event(this_task, this_task->atoms[i]);
+        }
+
+        cpu_usage_1 = get_cpu_usage_nsec_self();
+        this_task->cpu_usage = cpu_usage_1 - cpu_usage_0;
+
+        ret = sem_post(&this_task->work_done_sem);
+        BUG_ON(ret);
+
+        ret = pthread_mutex_lock(&work_done_wait_mutex);
+        BUG_ON(ret);
+        ret = pthread_mutex_unlock(&work_done_wait_mutex);
+        BUG_ON(ret);
+
+        goto again;
+}
+
+static void create_tasks(void)
+{
+        struct task_desc *task;
+        pthread_attr_t attr;
+        unsigned long i;
+        int err;
+
+        err = pthread_attr_init(&attr);
+        BUG_ON(err);
+        err = pthread_attr_setstacksize(&attr, (size_t)(16*1024));
+        BUG_ON(err);
+        err = pthread_mutex_lock(&start_work_mutex);
+        BUG_ON(err);
+        err = pthread_mutex_lock(&work_done_wait_mutex);
+        BUG_ON(err);
+        for (i = 0; i < nr_tasks; i++) {
+                task = tasks[i];
+                sem_init(&task->sleep_sem, 0, 0);
+                sem_init(&task->ready_for_work, 0, 0);
+                sem_init(&task->work_done_sem, 0, 0);
+                task->curr_event = 0;
+                err = pthread_create(&task->thread, &attr, thread_func, task);
+                BUG_ON(err);
+        }
+}
+
+static void wait_for_tasks(void)
+{
+        u64 cpu_usage_0, cpu_usage_1;
+        struct task_desc *task;
+        unsigned long i, ret;
+
+        start_time = get_nsecs();
+        cpu_usage = 0;
+        pthread_mutex_unlock(&work_done_wait_mutex);
+
+        for (i = 0; i < nr_tasks; i++) {
+                task = tasks[i];
+                ret = sem_wait(&task->ready_for_work);
+                BUG_ON(ret);
+                sem_init(&task->ready_for_work, 0, 0);
+        }
+        ret = pthread_mutex_lock(&work_done_wait_mutex);
+        BUG_ON(ret);
+
+        cpu_usage_0 = get_cpu_usage_nsec_parent();
+
+        pthread_mutex_unlock(&start_work_mutex);
+
+        for (i = 0; i < nr_tasks; i++) {
+                task = tasks[i];
+                ret = sem_wait(&task->work_done_sem);
+                BUG_ON(ret);
+                sem_init(&task->work_done_sem, 0, 0);
+                cpu_usage += task->cpu_usage;
+                task->cpu_usage = 0;
+        }
+
+        cpu_usage_1 = get_cpu_usage_nsec_parent();
+        if (!runavg_cpu_usage)
+                runavg_cpu_usage = cpu_usage;
+        runavg_cpu_usage = (runavg_cpu_usage*9 + cpu_usage)/10;
+
+        parent_cpu_usage = cpu_usage_1 - cpu_usage_0;
+        if (!runavg_parent_cpu_usage)
+                runavg_parent_cpu_usage = parent_cpu_usage;
+        runavg_parent_cpu_usage = (runavg_parent_cpu_usage*9 +
+                                   parent_cpu_usage)/10;
+
+        ret = pthread_mutex_lock(&start_work_mutex);
+        BUG_ON(ret);
+
+        for (i = 0; i < nr_tasks; i++) {
+                task = tasks[i];
+                sem_init(&task->sleep_sem, 0, 0);
+                task->curr_event = 0;
+        }
+}
+
+static void run_one_test(void)
+{
+        u64 T0, T1, delta, avg_delta, fluct, std_dev;
+
+        T0 = get_nsecs();
+        wait_for_tasks();
+        T1 = get_nsecs();
+
+        delta = T1 - T0;
+        sum_runtime += delta;
+        nr_runs++;
+
+        avg_delta = sum_runtime / nr_runs;
+        if (delta < avg_delta)
+                fluct = avg_delta - delta;
+        else
+                fluct = delta - avg_delta;
+        sum_fluct += fluct;
+        std_dev = sum_fluct / nr_runs / sqrt(nr_runs);
+        if (!run_avg)
+                run_avg = delta;
+        run_avg = (run_avg*9 + delta)/10;
+
+        printf("#%-3ld: %0.3f, ",
+                nr_runs, (double)delta/1000000.0);
+
+        printf("ravg: %0.2f, ",
+                (double)run_avg/1e6);
+
+        printf("cpu: %0.2f / %0.2f",
+                (double)cpu_usage/1e6, (double)runavg_cpu_usage/1e6);
+
+#if 0
+        /*
+         * rusage statistics done by the parent, these are less
+         * accurate than the sum_exec_runtime based statistics:
+         */
+        printf(" [%0.2f / %0.2f]",
+                (double)parent_cpu_usage/1e6,
+                (double)runavg_parent_cpu_usage/1e6);
+#endif
+
+        printf("\n");
+
+        if (nr_sleep_corrections)
+                printf(" (%ld sleep corrections)\n", nr_sleep_corrections);
+        nr_sleep_corrections = 0;
+}
+
+static void test_calibrations(void)
+{
+        u64 T0, T1;
+
+        T0 = get_nsecs();
+        burn_nsecs(1e6);
+        T1 = get_nsecs();
+
+        printf("the run test took %Ld nsecs\n", T1-T0);
+
+        T0 = get_nsecs();
+        sleep_nsecs(1e6);
+        T1 = get_nsecs();
+
+        printf("the sleep test took %Ld nsecs\n", T1-T0);
+}
+
+static int
+process_comm_event(event_t *event, unsigned long offset, unsigned long head)
+{
+        struct thread *thread;
+
+        thread = threads__findnew(event->comm.pid, &threads, &last_match);
+
+        dump_printf("%p [%p]: perf_event_comm: %s:%d\n",
+                (void *)(offset + head),
+                (void *)(long)(event->header.size),
+                event->comm.comm, event->comm.pid);
+
+        if (thread == NULL ||
+            thread__set_comm(thread, event->comm.comm)) {
+                dump_printf("problem processing perf_event_comm, skipping event.\n");
+                return -1;
+        }
+        total_comm++;
+
+        return 0;
+}
+
+
+struct raw_event_sample {
+        u32 size;
+        char data[0];
+};
+
+#define FILL_FIELD(ptr, field, event, data)     \
+        ptr.field = (typeof(ptr.field)) raw_field_value(event, #field, data)
+
+#define FILL_ARRAY(ptr, array, event, data)                     \
+do {                                                            \
+        void *__array = raw_field_ptr(event, #array, data);     \
+        memcpy(ptr.array, __array, sizeof(ptr.array));  \
+} while(0)
+
+#define FILL_COMMON_FIELDS(ptr, event, data)                    \
+do {                                                            \
+        FILL_FIELD(ptr, common_type, event, data);              \
+        FILL_FIELD(ptr, common_flags, event, data);             \
+        FILL_FIELD(ptr, common_preempt_count, event, data);     \
+        FILL_FIELD(ptr, common_pid, event, data);               \
+        FILL_FIELD(ptr, common_tgid, event, data);              \
+} while (0)
+
+
+
+struct trace_switch_event {
+        u32 size;
+
+        u16 common_type;
+        u8 common_flags;
+        u8 common_preempt_count;
+        u32 common_pid;
+        u32 common_tgid;
+
+        char prev_comm[16];
+        u32 prev_pid;
+        u32 prev_prio;
+        u64 prev_state;
+        char next_comm[16];
+        u32 next_pid;
+        u32 next_prio;
+};
+
+struct trace_runtime_event {
+        u32 size;
+
+        u16 common_type;
+        u8 common_flags;
+        u8 common_preempt_count;
+        u32 common_pid;
+        u32 common_tgid;
+
+        char comm[16];
+        u32 pid;
+        u64 runtime;
+        u64 vruntime;
+};
+
+struct trace_wakeup_event {
+        u32 size;
+
+        u16 common_type;
+        u8 common_flags;
+        u8 common_preempt_count;
+        u32 common_pid;
+        u32 common_tgid;
+
+        char comm[16];
+        u32 pid;
+
+        u32 prio;
+        u32 success;
+        u32 cpu;
+};
+
+struct trace_fork_event {
+        u32 size;
+
+        u16 common_type;
+        u8 common_flags;
+        u8 common_preempt_count;
+        u32 common_pid;
+        u32 common_tgid;
+
+        char parent_comm[16];
+        u32 parent_pid;
+        char child_comm[16];
+        u32 child_pid;
+};
+
+struct trace_sched_handler {
+        void (*switch_event)(struct trace_switch_event *,
+                             struct event *,
+                             int cpu,
+                             u64 timestamp,
+                             struct thread *thread);
+
+        void (*runtime_event)(struct trace_runtime_event *,
+                              struct event *,
+                              int cpu,
+                              u64 timestamp,
+                              struct thread *thread);
+
+        void (*wakeup_event)(struct trace_wakeup_event *,
+                             struct event *,
+                             int cpu,
+                             u64 timestamp,
+                             struct thread *thread);
+
+        void (*fork_event)(struct trace_fork_event *,
+                           struct event *,
+                           int cpu,
+                           u64 timestamp,
+                           struct thread *thread);
+};
+
+
+static void
+replay_wakeup_event(struct trace_wakeup_event *wakeup_event,
+                    struct event *event,
+                    int cpu __used,
+                    u64 timestamp __used,
+                    struct thread *thread __used)
+{
+        struct task_desc *waker, *wakee;
+
+        if (verbose) {
+                printf("sched_wakeup event %p\n", event);
+
+                printf(" ... pid %d woke up %s/%d\n",
+                        wakeup_event->common_pid,
+                        wakeup_event->comm,
+                        wakeup_event->pid);
+        }
+
+        waker = register_pid(wakeup_event->common_pid, "<unknown>");
+        wakee = register_pid(wakeup_event->pid, wakeup_event->comm);
+
+        add_sched_event_wakeup(waker, timestamp, wakee);
+}
+
+static u64 cpu_last_switched[MAX_CPUS];
+
+static void
+replay_switch_event(struct trace_switch_event *switch_event,
+                    struct event *event,
+                    int cpu,
+                    u64 timestamp,
+                    struct thread *thread __used)
+{
+        struct task_desc *prev, *next;
+        u64 timestamp0;
+        s64 delta;
+
+        if (verbose)
+                printf("sched_switch event %p\n", event);
+
+        if (cpu >= MAX_CPUS || cpu < 0)
+                return;
+
+        timestamp0 = cpu_last_switched[cpu];
+        if (timestamp0)
+                delta = timestamp - timestamp0;
+        else
+                delta = 0;
+
+        if (delta < 0)
+                die("hm, delta: %Ld < 0 ?\n", delta);
+
+        if (verbose) {
+                printf(" ... switch from %s/%d to %s/%d [ran %Ld nsecs]\n",
+                        switch_event->prev_comm, switch_event->prev_pid,
+                        switch_event->next_comm, switch_event->next_pid,
+                        delta);
+        }
+
+        prev = register_pid(switch_event->prev_pid, switch_event->prev_comm);
+        next = register_pid(switch_event->next_pid, switch_event->next_comm);
+
+        cpu_last_switched[cpu] = timestamp;
+
+        add_sched_event_run(prev, timestamp, delta);
+        add_sched_event_sleep(prev, timestamp, switch_event->prev_state);
+}
+
+
+static void
+replay_fork_event(struct trace_fork_event *fork_event,
+                  struct event *event,
+                  int cpu __used,
+                  u64 timestamp __used,
+                  struct thread *thread __used)
+{
+        if (verbose) {
+                printf("sched_fork event %p\n", event);
+                printf("... parent: %s/%d\n", fork_event->parent_comm, fork_event->parent_pid);
+                printf("...  child: %s/%d\n", fork_event->child_comm, fork_event->child_pid);
+        }
+        register_pid(fork_event->parent_pid, fork_event->parent_comm);
+        register_pid(fork_event->child_pid, fork_event->child_comm);
+}
+
+static struct trace_sched_handler replay_ops  = {
+        .wakeup_event           = replay_wakeup_event,
+        .switch_event           = replay_switch_event,
+        .fork_event             = replay_fork_event,
+};
+
+struct sort_dimension {
+        const char              *name;
+        sort_fn_t               cmp;
+        struct list_head        list;
+};
+
+static LIST_HEAD(cmp_pid);
+
+static int
+thread_lat_cmp(struct list_head *list, struct work_atoms *l, struct work_atoms *r)
+{
+        struct sort_dimension *sort;
+        int ret = 0;
+
+        BUG_ON(list_empty(list));
+
+        list_for_each_entry(sort, list, list) {
+                ret = sort->cmp(l, r);
+                if (ret)
+                        return ret;
+        }
+
+        return ret;
+}
+
+static struct work_atoms *
+thread_atoms_search(struct rb_root *root, struct thread *thread,
+                         struct list_head *sort_list)
+{
+        struct rb_node *node = root->rb_node;
+        struct work_atoms key = { .thread = thread };
+
+        while (node) {
+                struct work_atoms *atoms;
+                int cmp;
+
+                atoms = container_of(node, struct work_atoms, node);
+
+                cmp = thread_lat_cmp(sort_list, &key, atoms);
+                if (cmp > 0)
+                        node = node->rb_left;
+                else if (cmp < 0)
+                        node = node->rb_right;
+                else {
+                        BUG_ON(thread != atoms->thread);
+                        return atoms;
+                }
+        }
+        return NULL;
+}
+
+static void
+__thread_latency_insert(struct rb_root *root, struct work_atoms *data,
+                         struct list_head *sort_list)
+{
+        struct rb_node **new = &(root->rb_node), *parent = NULL;
+
+        while (*new) {
+                struct work_atoms *this;
+                int cmp;
+
+                this = container_of(*new, struct work_atoms, node);
+                parent = *new;
+
+                cmp = thread_lat_cmp(sort_list, data, this);
+
+                if (cmp > 0)
+                        new = &((*new)->rb_left);
+                else
+                        new = &((*new)->rb_right);
+        }
+
+        rb_link_node(&data->node, parent, new);
+        rb_insert_color(&data->node, root);
+}
+
+static void thread_atoms_insert(struct thread *thread)
+{
+        struct work_atoms *atoms;
+
+        atoms = calloc(sizeof(*atoms), 1);
+        if (!atoms)
+                die("No memory");
+
+        atoms->thread = thread;
+        INIT_LIST_HEAD(&atoms->work_list);
+        __thread_latency_insert(&atom_root, atoms, &cmp_pid);
+}
+
+static void
+latency_fork_event(struct trace_fork_event *fork_event __used,
+                   struct event *event __used,
+                   int cpu __used,
+                   u64 timestamp __used,
+                   struct thread *thread __used)
+{
+        /* should insert the newcomer */
+}
+
+__used
+static char sched_out_state(struct trace_switch_event *switch_event)
+{
+        const char *str = TASK_STATE_TO_CHAR_STR;
+
+        return str[switch_event->prev_state];
+}
+
+static void
+add_sched_out_event(struct work_atoms *atoms,
+                    char run_state,
+                    u64 timestamp)
+{
+        struct work_atom *atom;
+
+        atom = calloc(sizeof(*atom), 1);
+        if (!atom)
+                die("Non memory");
+
+        atom->sched_out_time = timestamp;
+
+        if (run_state == 'R') {
+                atom->state = THREAD_WAIT_CPU;
+                atom->wake_up_time = atom->sched_out_time;
+        }
+
+        list_add_tail(&atom->list, &atoms->work_list);
+}
+
+static void
+add_runtime_event(struct work_atoms *atoms, u64 delta, u64 timestamp __used)
+{
+        struct work_atom *atom;
+
+        BUG_ON(list_empty(&atoms->work_list));
+
+        atom = list_entry(atoms->work_list.prev, struct work_atom, list);
+
+        atom->runtime += delta;
+        atoms->total_runtime += delta;
+}
+
+static void
+add_sched_in_event(struct work_atoms *atoms, u64 timestamp)
+{
+        struct work_atom *atom;
+        u64 delta;
+
+        if (list_empty(&atoms->work_list))
+                return;
+
+        atom = list_entry(atoms->work_list.prev, struct work_atom, list);
+
+        if (atom->state != THREAD_WAIT_CPU)
+                return;
+
+        if (timestamp < atom->wake_up_time) {
+                atom->state = THREAD_IGNORE;
+                return;
+        }
+
+        atom->state = THREAD_SCHED_IN;
+        atom->sched_in_time = timestamp;
+
+        delta = atom->sched_in_time - atom->wake_up_time;
+        atoms->total_lat += delta;
+        if (delta > atoms->max_lat)
+                atoms->max_lat = delta;
+        atoms->nb_atoms++;
+}
+
+static void
+latency_switch_event(struct trace_switch_event *switch_event,
+                     struct event *event __used,
+                     int cpu,
+                     u64 timestamp,
+                     struct thread *thread __used)
+{
+        struct work_atoms *out_events, *in_events;
+        struct thread *sched_out, *sched_in;
+        u64 timestamp0;
+        s64 delta;
+
+        BUG_ON(cpu >= MAX_CPUS || cpu < 0);
+
+        timestamp0 = cpu_last_switched[cpu];
+        cpu_last_switched[cpu] = timestamp;
+        if (timestamp0)
+                delta = timestamp - timestamp0;
+        else
+                delta = 0;
+
+        if (delta < 0)
+                die("hm, delta: %Ld < 0 ?\n", delta);
+
+
+        sched_out = threads__findnew(switch_event->prev_pid, &threads, &last_match);
+        sched_in = threads__findnew(switch_event->next_pid, &threads, &last_match);
+
+        out_events = thread_atoms_search(&atom_root, sched_out, &cmp_pid);
+        if (!out_events) {
+                thread_atoms_insert(sched_out);
+                out_events = thread_atoms_search(&atom_root, sched_out, &cmp_pid);
+                if (!out_events)
+                        die("out-event: Internal tree error");
+        }
+        add_sched_out_event(out_events, sched_out_state(switch_event), timestamp);
+
+        in_events = thread_atoms_search(&atom_root, sched_in, &cmp_pid);
+        if (!in_events) {
+                thread_atoms_insert(sched_in);
+                in_events = thread_atoms_search(&atom_root, sched_in, &cmp_pid);
+                if (!in_events)
+                        die("in-event: Internal tree error");
+                /*
+                 * Take came in we have not heard about yet,
+                 * add in an initial atom in runnable state:
+                 */
+                add_sched_out_event(in_events, 'R', timestamp);
+        }
+        add_sched_in_event(in_events, timestamp);
+}
+
+static void
+latency_runtime_event(struct trace_runtime_event *runtime_event,
+                     struct event *event __used,
+                     int cpu,
+                     u64 timestamp,
+                     struct thread *this_thread __used)
+{
+        struct work_atoms *atoms;
+        struct thread *thread;
+
+        BUG_ON(cpu >= MAX_CPUS || cpu < 0);
+
+        thread = threads__findnew(runtime_event->pid, &threads, &last_match);
+        atoms = thread_atoms_search(&atom_root, thread, &cmp_pid);
+        if (!atoms) {
+                thread_atoms_insert(thread);
+                atoms = thread_atoms_search(&atom_root, thread, &cmp_pid);
+                if (!atoms)
+                        die("in-event: Internal tree error");
+                add_sched_out_event(atoms, 'R', timestamp);
+        }
+
+        add_runtime_event(atoms, runtime_event->runtime, timestamp);
+}
+
+static void
+latency_wakeup_event(struct trace_wakeup_event *wakeup_event,
+                     struct event *__event __used,
+                     int cpu __used,
+                     u64 timestamp,
+                     struct thread *thread __used)
+{
+        struct work_atoms *atoms;
+        struct work_atom *atom;
+        struct thread *wakee;
+
+        /* Note for later, it may be interesting to observe the failing cases */
+        if (!wakeup_event->success)
+                return;
+
+        wakee = threads__findnew(wakeup_event->pid, &threads, &last_match);
+        atoms = thread_atoms_search(&atom_root, wakee, &cmp_pid);
+        if (!atoms) {
+                thread_atoms_insert(wakee);
+                atoms = thread_atoms_search(&atom_root, wakee, &cmp_pid);
+                if (!atoms)
+                        die("wakeup-event: Internal tree error");
+                add_sched_out_event(atoms, 'S', timestamp);
+        }
+
+        BUG_ON(list_empty(&atoms->work_list));
+
+        atom = list_entry(atoms->work_list.prev, struct work_atom, list);
+
+        if (atom->state != THREAD_SLEEPING)
+                nr_state_machine_bugs++;
+
+        nr_timestamps++;
+        if (atom->sched_out_time > timestamp) {
+                nr_unordered_timestamps++;
+                return;
+        }
+
+        atom->state = THREAD_WAIT_CPU;
+        atom->wake_up_time = timestamp;
+}
+
+static struct trace_sched_handler lat_ops  = {
+        .wakeup_event           = latency_wakeup_event,
+        .switch_event           = latency_switch_event,
+        .runtime_event          = latency_runtime_event,
+        .fork_event             = latency_fork_event,
+};
+
+static void output_lat_thread(struct work_atoms *work_list)
+{
+        int i;
+        int ret;
+        u64 avg;
+
+        if (!work_list->nb_atoms)
+                return;
+        /*
+         * Ignore idle threads:
+         */
+        if (!strcmp(work_list->thread->comm, "swapper"))
+                return;
+
+        all_runtime += work_list->total_runtime;
+        all_count += work_list->nb_atoms;
+
+        ret = printf("  %s:%d ", work_list->thread->comm, work_list->thread->pid);
+
+        for (i = 0; i < 24 - ret; i++)
+                printf(" ");
+
+        avg = work_list->total_lat / work_list->nb_atoms;
+
+        printf("|%11.3f ms |%9llu | avg:%9.3f ms | max:%9.3f ms |\n",
+              (double)work_list->total_runtime / 1e6,
+                 work_list->nb_atoms, (double)avg / 1e6,
+                 (double)work_list->max_lat / 1e6);
+}
+
+static int pid_cmp(struct work_atoms *l, struct work_atoms *r)
+{
+        if (l->thread->pid < r->thread->pid)
+                return -1;
+        if (l->thread->pid > r->thread->pid)
+                return 1;
+
+        return 0;
+}
+
+static struct sort_dimension pid_sort_dimension = {
+        .name                   = "pid",
+        .cmp                    = pid_cmp,
+};
+
+static int avg_cmp(struct work_atoms *l, struct work_atoms *r)
+{
+        u64 avgl, avgr;
+
+        if (!l->nb_atoms)
+                return -1;
+
+        if (!r->nb_atoms)
+                return 1;
+
+        avgl = l->total_lat / l->nb_atoms;
+        avgr = r->total_lat / r->nb_atoms;
+
+        if (avgl < avgr)
+                return -1;
+        if (avgl > avgr)
+                return 1;
+
+        return 0;
+}
+
+static struct sort_dimension avg_sort_dimension = {
+        .name                   = "avg",
+        .cmp                    = avg_cmp,
+};
+
+static int max_cmp(struct work_atoms *l, struct work_atoms *r)
+{
+        if (l->max_lat < r->max_lat)
+                return -1;
+        if (l->max_lat > r->max_lat)
+                return 1;
+
+        return 0;
+}
+
+static struct sort_dimension max_sort_dimension = {
+        .name                   = "max",
+        .cmp                    = max_cmp,
+};
+
+static int switch_cmp(struct work_atoms *l, struct work_atoms *r)
+{
+        if (l->nb_atoms < r->nb_atoms)
+                return -1;
+        if (l->nb_atoms > r->nb_atoms)
+                return 1;
+
+        return 0;
+}
+
+static struct sort_dimension switch_sort_dimension = {
+        .name                   = "switch",
+        .cmp                    = switch_cmp,
+};
+
+static int runtime_cmp(struct work_atoms *l, struct work_atoms *r)
+{
+        if (l->total_runtime < r->total_runtime)
+                return -1;
+        if (l->total_runtime > r->total_runtime)
+                return 1;
+
+        return 0;
+}
+
+static struct sort_dimension runtime_sort_dimension = {
+        .name                   = "runtime",
+        .cmp                    = runtime_cmp,
+};
+
+static struct sort_dimension *available_sorts[] = {
+        &pid_sort_dimension,
+        &avg_sort_dimension,
+        &max_sort_dimension,
+        &switch_sort_dimension,
+        &runtime_sort_dimension,
+};
+
+#define NB_AVAILABLE_SORTS      (int)(sizeof(available_sorts) / sizeof(struct sort_dimension *))
+
+static LIST_HEAD(sort_list);
+
+static int sort_dimension__add(char *tok, struct list_head *list)
+{
+        int i;
+
+        for (i = 0; i < NB_AVAILABLE_SORTS; i++) {
+                if (!strcmp(available_sorts[i]->name, tok)) {
+                        list_add_tail(&available_sorts[i]->list, list);
+
+                        return 0;
+                }
+        }
+
+        return -1;
+}
+
+static void setup_sorting(void);
+
+static void sort_lat(void)
+{
+        struct rb_node *node;
+
+        for (;;) {
+                struct work_atoms *data;
+                node = rb_first(&atom_root);
+                if (!node)
+                        break;
+
+                rb_erase(node, &atom_root);
+                data = rb_entry(node, struct work_atoms, node);
+                __thread_latency_insert(&sorted_atom_root, data, &sort_list);
+        }
+}
+
+static struct trace_sched_handler *trace_handler;
+
+static void
+process_sched_wakeup_event(struct raw_event_sample *raw,
+                           struct event *event,
+                           int cpu __used,
+                           u64 timestamp __used,
+                           struct thread *thread __used)
+{
+        struct trace_wakeup_event wakeup_event;
+
+        FILL_COMMON_FIELDS(wakeup_event, event, raw->data);
+
+        FILL_ARRAY(wakeup_event, comm, event, raw->data);
+        FILL_FIELD(wakeup_event, pid, event, raw->data);
+        FILL_FIELD(wakeup_event, prio, event, raw->data);
+        FILL_FIELD(wakeup_event, success, event, raw->data);
+        FILL_FIELD(wakeup_event, cpu, event, raw->data);
+
+        if (trace_handler->wakeup_event)
+                trace_handler->wakeup_event(&wakeup_event, event, cpu, timestamp, thread);
+}
+
+/*
+ * Track the current task - that way we can know whether there's any
+ * weird events, such as a task being switched away that is not current.
+ */
+static int max_cpu;
+
+static u32 curr_pid[MAX_CPUS] = { [0 ... MAX_CPUS-1] = -1 };
+
+static struct thread *curr_thread[MAX_CPUS];
+
+static char next_shortname1 = 'A';
+static char next_shortname2 = '0';
+
+static void
+map_switch_event(struct trace_switch_event *switch_event,
+                 struct event *event __used,
+                 int this_cpu,
+                 u64 timestamp,
+                 struct thread *thread __used)
+{
+        struct thread *sched_out, *sched_in;
+        int new_shortname;
+        u64 timestamp0;
+        s64 delta;
+        int cpu;
+
+        BUG_ON(this_cpu >= MAX_CPUS || this_cpu < 0);
+
+        if (this_cpu > max_cpu)
+                max_cpu = this_cpu;
+
+        timestamp0 = cpu_last_switched[this_cpu];
+        cpu_last_switched[this_cpu] = timestamp;
+        if (timestamp0)
+                delta = timestamp - timestamp0;
+        else
+                delta = 0;
+
+        if (delta < 0)
+                die("hm, delta: %Ld < 0 ?\n", delta);
+
+
+        sched_out = threads__findnew(switch_event->prev_pid, &threads, &last_match);
+        sched_in = threads__findnew(switch_event->next_pid, &threads, &last_match);
+
+        curr_thread[this_cpu] = sched_in;
+
+        printf("  ");
+
+        new_shortname = 0;
+        if (!sched_in->shortname[0]) {
+                sched_in->shortname[0] = next_shortname1;
+                sched_in->shortname[1] = next_shortname2;
+
+                if (next_shortname1 < 'Z') {
+                        next_shortname1++;
+                } else {
+                        next_shortname1='A';
+                        if (next_shortname2 < '9') {
+                                next_shortname2++;
+                        } else {
+                                next_shortname2='0';
+                        }
+                }
+                new_shortname = 1;
+        }
+
+        for (cpu = 0; cpu <= max_cpu; cpu++) {
+                if (cpu != this_cpu)
+                        printf(" ");
+                else
+                        printf("*");
+
+                if (curr_thread[cpu]) {
+                        if (curr_thread[cpu]->pid)
+                                printf("%2s ", curr_thread[cpu]->shortname);
+                        else
+                                printf(".  ");
+                } else
+                        printf("   ");
+        }
+
+        printf("  %12.6f secs ", (double)timestamp/1e9);
+        if (new_shortname) {
+                printf("%s => %s:%d\n",
+                        sched_in->shortname, sched_in->comm, sched_in->pid);
+        } else {
+                printf("\n");
+        }
+}
+
+
+static void
+process_sched_switch_event(struct raw_event_sample *raw,
+                           struct event *event,
+                           int this_cpu,
+                           u64 timestamp __used,
+                           struct thread *thread __used)
+{
+        struct trace_switch_event switch_event;
+
+        FILL_COMMON_FIELDS(switch_event, event, raw->data);
+
+        FILL_ARRAY(switch_event, prev_comm, event, raw->data);
+        FILL_FIELD(switch_event, prev_pid, event, raw->data);
+        FILL_FIELD(switch_event, prev_prio, event, raw->data);
+        FILL_FIELD(switch_event, prev_state, event, raw->data);
+        FILL_ARRAY(switch_event, next_comm, event, raw->data);
+        FILL_FIELD(switch_event, next_pid, event, raw->data);
+        FILL_FIELD(switch_event, next_prio, event, raw->data);
+
+        if (curr_pid[this_cpu] != (u32)-1) {
+                /*
+                 * Are we trying to switch away a PID that is
+                 * not current?
+                 */
+                if (curr_pid[this_cpu] != switch_event.prev_pid)
+                        nr_context_switch_bugs++;
+        }
+        if (trace_handler->switch_event)
+                trace_handler->switch_event(&switch_event, event, this_cpu, timestamp, thread);
+
+        curr_pid[this_cpu] = switch_event.next_pid;
+}
+
+static void
+process_sched_runtime_event(struct raw_event_sample *raw,
+                           struct event *event,
+                           int cpu __used,
+                           u64 timestamp __used,
+                           struct thread *thread __used)
+{
+        struct trace_runtime_event runtime_event;
+
+        FILL_ARRAY(runtime_event, comm, event, raw->data);
+        FILL_FIELD(runtime_event, pid, event, raw->data);
+        FILL_FIELD(runtime_event, runtime, event, raw->data);
+        FILL_FIELD(runtime_event, vruntime, event, raw->data);
+
+        if (trace_handler->runtime_event)
+                trace_handler->runtime_event(&runtime_event, event, cpu, timestamp, thread);
+}
+
+static void
+process_sched_fork_event(struct raw_event_sample *raw,
+                         struct event *event,
+                         int cpu __used,
+                         u64 timestamp __used,
+                         struct thread *thread __used)
+{
+        struct trace_fork_event fork_event;
+
+        FILL_COMMON_FIELDS(fork_event, event, raw->data);
+
+        FILL_ARRAY(fork_event, parent_comm, event, raw->data);
+        FILL_FIELD(fork_event, parent_pid, event, raw->data);
+        FILL_ARRAY(fork_event, child_comm, event, raw->data);
+        FILL_FIELD(fork_event, child_pid, event, raw->data);
+
+        if (trace_handler->fork_event)
+                trace_handler->fork_event(&fork_event, event, cpu, timestamp, thread);
+}
+
+static void
+process_sched_exit_event(struct event *event,
+                         int cpu __used,
+                         u64 timestamp __used,
+                         struct thread *thread __used)
+{
+        if (verbose)
+                printf("sched_exit event %p\n", event);
+}
+
+static void
+process_raw_event(event_t *raw_event __used, void *more_data,
+                  int cpu, u64 timestamp, struct thread *thread)
+{
+        struct raw_event_sample *raw = more_data;
+        struct event *event;
+        int type;
+
+        type = trace_parse_common_type(raw->data);
+        event = trace_find_event(type);
+
+        if (!strcmp(event->name, "sched_switch"))
+                process_sched_switch_event(raw, event, cpu, timestamp, thread);
+        if (!strcmp(event->name, "sched_stat_runtime"))
+                process_sched_runtime_event(raw, event, cpu, timestamp, thread);
+        if (!strcmp(event->name, "sched_wakeup"))
+                process_sched_wakeup_event(raw, event, cpu, timestamp, thread);
+        if (!strcmp(event->name, "sched_wakeup_new"))
+                process_sched_wakeup_event(raw, event, cpu, timestamp, thread);
+        if (!strcmp(event->name, "sched_process_fork"))
+                process_sched_fork_event(raw, event, cpu, timestamp, thread);
+        if (!strcmp(event->name, "sched_process_exit"))
+                process_sched_exit_event(event, cpu, timestamp, thread);
+}
+
+static int
+process_sample_event(event_t *event, unsigned long offset, unsigned long head)
+{
+        char level;
+        int show = 0;
+        struct dso *dso = NULL;
+        struct thread *thread;
+        u64 ip = event->ip.ip;
+        u64 timestamp = -1;
+        u32 cpu = -1;
+        u64 period = 1;
+        void *more_data = event->ip.__more_data;
+        int cpumode;
+
+        thread = threads__findnew(event->ip.pid, &threads, &last_match);
+
+        if (sample_type & PERF_SAMPLE_TIME) {
+                timestamp = *(u64 *)more_data;
+                more_data += sizeof(u64);
+        }
+
+        if (sample_type & PERF_SAMPLE_CPU) {
+                cpu = *(u32 *)more_data;
+                more_data += sizeof(u32);
+                more_data += sizeof(u32); /* reserved */
+        }
+
+        if (sample_type & PERF_SAMPLE_PERIOD) {
+                period = *(u64 *)more_data;
+                more_data += sizeof(u64);
+        }
+
+        dump_printf("%p [%p]: PERF_EVENT_SAMPLE (IP, %d): %d/%d: %p period: %Ld\n",
+                (void *)(offset + head),
+                (void *)(long)(event->header.size),
+                event->header.misc,
+                event->ip.pid, event->ip.tid,
+                (void *)(long)ip,
+                (long long)period);
+
+        dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid);
+
+        if (thread == NULL) {
+                eprintf("problem processing %d event, skipping it.\n",
+                        event->header.type);
+                return -1;
+        }
+
+        cpumode = event->header.misc & PERF_EVENT_MISC_CPUMODE_MASK;
+
+        if (cpumode == PERF_EVENT_MISC_KERNEL) {
+                show = SHOW_KERNEL;
+                level = 'k';
+
+                dso = kernel_dso;
+
+                dump_printf(" ...... dso: %s\n", dso->name);
+
+        } else if (cpumode == PERF_EVENT_MISC_USER) {
+
+                show = SHOW_USER;
+                level = '.';
+
+        } else {
+                show = SHOW_HV;
+                level = 'H';
+
+                dso = hypervisor_dso;
+
+                dump_printf(" ...... dso: [hypervisor]\n");
+        }
+
+        if (sample_type & PERF_SAMPLE_RAW)
+                process_raw_event(event, more_data, cpu, timestamp, thread);
+
+        return 0;
+}
+
+static int
+process_event(event_t *event, unsigned long offset, unsigned long head)
+{
+        trace_event(event);
+
+        nr_events++;
+        switch (event->header.type) {
+        case PERF_EVENT_MMAP:
+                return 0;
+        case PERF_EVENT_LOST:
+                nr_lost_chunks++;
+                nr_lost_events += event->lost.lost;
+                return 0;
+
+        case PERF_EVENT_COMM:
+                return process_comm_event(event, offset, head);
+
+        case PERF_EVENT_EXIT ... PERF_EVENT_READ:
+                return 0;
+
+        case PERF_EVENT_SAMPLE:
+                return process_sample_event(event, offset, head);
+
+        case PERF_EVENT_MAX:
+        default:
+                return -1;
+        }
+
+        return 0;
+}
+
+static int read_events(void)
+{
+        int ret, rc = EXIT_FAILURE;
+        unsigned long offset = 0;
+        unsigned long head = 0;
+        struct stat perf_stat;
+        event_t *event;
+        uint32_t size;
+        char *buf;
+
+        trace_report();
+        register_idle_thread(&threads, &last_match);
+
+        input = open(input_name, O_RDONLY);
+        if (input < 0) {
+                perror("failed to open file");
+                exit(-1);
+        }
+
+        ret = fstat(input, &perf_stat);
+        if (ret < 0) {
+                perror("failed to stat file");
+                exit(-1);
+        }
+
+        if (!perf_stat.st_size) {
+                fprintf(stderr, "zero-sized file, nothing to do!\n");
+                exit(0);
+        }
+        header = perf_header__read(input);
+        head = header->data_offset;
+        sample_type = perf_header__sample_type(header);
+
+        if (!(sample_type & PERF_SAMPLE_RAW))
+                die("No trace sample to read. Did you call perf record "
+                    "without -R?");
+
+        if (load_kernel() < 0) {
+                perror("failed to load kernel symbols");
+                return EXIT_FAILURE;
+        }
+
+remap:
+        buf = (char *)mmap(NULL, page_size * mmap_window, PROT_READ,
+                           MAP_SHARED, input, offset);
+        if (buf == MAP_FAILED) {
+                perror("failed to mmap file");
+                exit(-1);
+        }
+
+more:
+        event = (event_t *)(buf + head);
+
+        size = event->header.size;
+        if (!size)
+                size = 8;
+
+        if (head + event->header.size >= page_size * mmap_window) {
+                unsigned long shift = page_size * (head / page_size);
+                int res;
+
+                res = munmap(buf, page_size * mmap_window);
+                assert(res == 0);
+
+                offset += shift;
+                head -= shift;
+                goto remap;
+        }
+
+        size = event->header.size;
+
+
+        if (!size || process_event(event, offset, head) < 0) {
+
+                /*
+                 * assume we lost track of the stream, check alignment, and
+                 * increment a single u64 in the hope to catch on again 'soon'.
+                 */
+
+                if (unlikely(head & 7))
+                        head &= ~7ULL;
+
+                size = 8;
+        }
+
+        head += size;
+
+        if (offset + head < (unsigned long)perf_stat.st_size)
+                goto more;
+
+        rc = EXIT_SUCCESS;
+        close(input);
+
+        return rc;
+}
+
+static void print_bad_events(void)
+{
+        if (nr_unordered_timestamps && nr_timestamps) {
+                printf("  INFO: %.3f%% unordered timestamps (%ld out of %ld)\n",
+                        (double)nr_unordered_timestamps/(double)nr_timestamps*100.0,
+                        nr_unordered_timestamps, nr_timestamps);
+        }
+        if (nr_lost_events && nr_events) {
+                printf("  INFO: %.3f%% lost events (%ld out of %ld, in %ld chunks)\n",
+                        (double)nr_lost_events/(double)nr_events*100.0,
+                        nr_lost_events, nr_events, nr_lost_chunks);
+        }
+        if (nr_state_machine_bugs && nr_timestamps) {
+                printf("  INFO: %.3f%% state machine bugs (%ld out of %ld)",
+                        (double)nr_state_machine_bugs/(double)nr_timestamps*100.0,
+                        nr_state_machine_bugs, nr_timestamps);
+                if (nr_lost_events)
+                        printf(" (due to lost events?)");
+                printf("\n");
+        }
+        if (nr_context_switch_bugs && nr_timestamps) {
+                printf("  INFO: %.3f%% context switch bugs (%ld out of %ld)",
+                        (double)nr_context_switch_bugs/(double)nr_timestamps*100.0,
+                        nr_context_switch_bugs, nr_timestamps);
+                if (nr_lost_events)
+                        printf(" (due to lost events?)");
+                printf("\n");
+        }
+}
+
+static void __cmd_lat(void)
+{
+        struct rb_node *next;
+
+        setup_pager();
+        read_events();
+        sort_lat();
+
+        printf("\n -----------------------------------------------------------------------------------------\n");
+        printf("  Task                  |   Runtime ms  | Switches | Average delay ms | Maximum delay ms |\n");
+        printf(" -----------------------------------------------------------------------------------------\n");
+
+        next = rb_first(&sorted_atom_root);
+
+        while (next) {
+                struct work_atoms *work_list;
+
+                work_list = rb_entry(next, struct work_atoms, node);
+                output_lat_thread(work_list);
+                next = rb_next(next);
+        }
+
+        printf(" -----------------------------------------------------------------------------------------\n");
+        printf("  TOTAL:                |%11.3f ms |%9Ld |\n",
+                (double)all_runtime/1e6, all_count);
+
+        printf(" ---------------------------------------------------\n");
+
+        print_bad_events();
+        printf("\n");
+
+}
+
+static struct trace_sched_handler map_ops  = {
+        .wakeup_event           = NULL,
+        .switch_event           = map_switch_event,
+        .runtime_event          = NULL,
+        .fork_event             = NULL,
+};
+
+static void __cmd_map(void)
+{
+        max_cpu = sysconf(_SC_NPROCESSORS_CONF);
+
+        setup_pager();
+        read_events();
+        print_bad_events();
+}
+
+static void __cmd_replay(void)
+{
+        unsigned long i;
+
+        calibrate_run_measurement_overhead();
+        calibrate_sleep_measurement_overhead();
+
+        test_calibrations();
+
+        read_events();
+
+        printf("nr_run_events:        %ld\n", nr_run_events);
+        printf("nr_sleep_events:      %ld\n", nr_sleep_events);
+        printf("nr_wakeup_events:     %ld\n", nr_wakeup_events);
+
+        if (targetless_wakeups)
+                printf("target-less wakeups:  %ld\n", targetless_wakeups);
+        if (multitarget_wakeups)
+                printf("multi-target wakeups: %ld\n", multitarget_wakeups);
+        if (nr_run_events_optimized)
+                printf("run atoms optimized: %ld\n",
+                        nr_run_events_optimized);
+
+        print_task_traces();
+        add_cross_task_wakeups();
+
+        create_tasks();
+        printf("------------------------------------------------------------\n");
+        for (i = 0; i < replay_repeat; i++)
+                run_one_test();
+}
+
+
+static const char * const sched_usage[] = {
+        "perf sched [<options>] {record|latency|map|replay|trace}",
+        NULL
+};
+
+static const struct option sched_options[] = {
+        OPT_STRING('i', "input", &input_name, "file",
+                    "input file name"),
+        OPT_BOOLEAN('v', "verbose", &verbose,
+                    "be more verbose (show symbol address, etc)"),
+        OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
+                    "dump raw trace in ASCII"),
+        OPT_END()
+};
+
+static const char * const latency_usage[] = {
+        "perf sched latency [<options>]",
+        NULL
+};
+
+static const struct option latency_options[] = {
+        OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
+                   "sort by key(s): runtime, switch, avg, max"),
+        OPT_BOOLEAN('v', "verbose", &verbose,
+                    "be more verbose (show symbol address, etc)"),
+        OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
+                    "dump raw trace in ASCII"),
+        OPT_END()
+};
+
+static const char * const replay_usage[] = {
+        "perf sched replay [<options>]",
+        NULL
+};
+
+static const struct option replay_options[] = {
+        OPT_INTEGER('r', "repeat", &replay_repeat,
+                    "repeat the workload replay N times (-1: infinite)"),
+        OPT_BOOLEAN('v', "verbose", &verbose,
+                    "be more verbose (show symbol address, etc)"),
+        OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
+                    "dump raw trace in ASCII"),
+        OPT_END()
+};
+
+static void setup_sorting(void)
+{
+        char *tmp, *tok, *str = strdup(sort_order);
+
+        for (tok = strtok_r(str, ", ", &tmp);
+                        tok; tok = strtok_r(NULL, ", ", &tmp)) {
+                if (sort_dimension__add(tok, &sort_list) < 0) {
+                        error("Unknown --sort key: `%s'", tok);
+                        usage_with_options(latency_usage, latency_options);
+                }
+        }
+
+        free(str);
+
+        sort_dimension__add((char *)"pid", &cmp_pid);
+}
+
+static const char *record_args[] = {
+        "record",
+        "-a",
+        "-R",
+        "-M",
+        "-f",
+        "-m", "1024",
+        "-c", "1",
+        "-e", "sched:sched_switch:r",
+        "-e", "sched:sched_stat_wait:r",
+        "-e", "sched:sched_stat_sleep:r",
+        "-e", "sched:sched_stat_iowait:r",
+        "-e", "sched:sched_stat_runtime:r",
+        "-e", "sched:sched_process_exit:r",
+        "-e", "sched:sched_process_fork:r",
+        "-e", "sched:sched_wakeup:r",
+        "-e", "sched:sched_migrate_task:r",
+};
+
+static int __cmd_record(int argc, const char **argv)
+{
+        unsigned int rec_argc, i, j;
+        const char **rec_argv;
+
+        rec_argc = ARRAY_SIZE(record_args) + argc - 1;
+        rec_argv = calloc(rec_argc + 1, sizeof(char *));
+
+        for (i = 0; i < ARRAY_SIZE(record_args); i++)
+                rec_argv[i] = strdup(record_args[i]);
+
+        for (j = 1; j < (unsigned int)argc; j++, i++)
+                rec_argv[i] = argv[j];
+
+        BUG_ON(i != rec_argc);
+
+        return cmd_record(i, rec_argv, NULL);
+}
+
+int cmd_sched(int argc, const char **argv, const char *prefix __used)
+{
+        symbol__init();
+        page_size = getpagesize();
+
+        argc = parse_options(argc, argv, sched_options, sched_usage,
+                             PARSE_OPT_STOP_AT_NON_OPTION);
+        if (!argc)
+                usage_with_options(sched_usage, sched_options);
+
+        if (!strncmp(argv[0], "rec", 3)) {
+                return __cmd_record(argc, argv);
+        } else if (!strncmp(argv[0], "lat", 3)) {
+                trace_handler = &lat_ops;
+                if (argc > 1) {
+                        argc = parse_options(argc, argv, latency_options, latency_usage, 0);
+                        if (argc)
+                                usage_with_options(latency_usage, latency_options);
+                }
+                setup_sorting();
+                __cmd_lat();
+        } else if (!strcmp(argv[0], "map")) {
+                trace_handler = &map_ops;
+                setup_sorting();
+                __cmd_map();
+        } else if (!strncmp(argv[0], "rep", 3)) {
+                trace_handler = &replay_ops;
+                if (argc) {
+                        argc = parse_options(argc, argv, replay_options, replay_usage, 0);
+                        if (argc)
+                                usage_with_options(replay_usage, replay_options);
+                }
+                __cmd_replay();
+        } else if (!strcmp(argv[0], "trace")) {
+                /*
+                 * Aliased to 'perf trace' for now:
+                 */
+                return cmd_trace(argc, argv, prefix);
+        } else {
+                usage_with_options(sched_usage, sched_options);
+        }
+
+        return 0;
+}
diff --git a/tools/perf/builtin-timechart.c b/tools/perf/builtin-timechart.c
new file mode 100644
index 000000000000..58d737ec8f5e
--- /dev/null
+++ b/tools/perf/builtin-timechart.c
@@ -0,0 +1,1151 @@
+/*
+ * builtin-timechart.c - make an svg timechart of system activity
+ *
+ * (C) Copyright 2009 Intel Corporation
+ *
+ * Authors:
+ *     Arjan van de Ven <arjan@linux.intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; version 2
+ * of the License.
+ */
+
+#include "builtin.h"
+
+#include "util/util.h"
+
+#include "util/color.h"
+#include <linux/list.h>
+#include "util/cache.h"
+#include <linux/rbtree.h>
+#include "util/symbol.h"
+#include "util/string.h"
+#include "util/callchain.h"
+#include "util/strlist.h"
+
+#include "perf.h"
+#include "util/header.h"
+#include "util/parse-options.h"
+#include "util/parse-events.h"
+#include "util/svghelper.h"
+
+static char             const *input_name = "perf.data";
+static char             const *output_name = "output.svg";
+
+
+static unsigned long    page_size;
+static unsigned long    mmap_window = 32;
+static u64              sample_type;
+
+static unsigned int     numcpus;
+static u64              min_freq;       /* Lowest CPU frequency seen */
+static u64              max_freq;       /* Highest CPU frequency seen */
+static u64              turbo_frequency;
+
+static u64              first_time, last_time;
+
+
+static struct perf_header       *header;
+
+struct per_pid;
+struct per_pidcomm;
+
+struct cpu_sample;
+struct power_event;
+struct wake_event;
+
+struct sample_wrapper;
+
+/*
+ * Datastructure layout:
+ * We keep an list of "pid"s, matching the kernels notion of a task struct.
+ * Each "pid" entry, has a list of "comm"s.
+ *      this is because we want to track different programs different, while
+ *      exec will reuse the original pid (by design).
+ * Each comm has a list of samples that will be used to draw
+ * final graph.
+ */
+
+struct per_pid {
+        struct per_pid *next;
+
+        int             pid;
+        int             ppid;
+
+        u64             start_time;
+        u64             end_time;
+        u64             total_time;
+        int             display;
+
+        struct per_pidcomm *all;
+        struct per_pidcomm *current;
+
+        int painted;
+};
+
+
+struct per_pidcomm {
+        struct per_pidcomm *next;
+
+        u64             start_time;
+        u64             end_time;
+        u64             total_time;
+
+        int             Y;
+        int             display;
+
+        long            state;
+        u64             state_since;
+
+        char            *comm;
+
+        struct cpu_sample *samples;
+};
+
+struct sample_wrapper {
+        struct sample_wrapper *next;
+
+        u64             timestamp;
+        unsigned char   data[0];
+};
+
+#define TYPE_NONE       0
+#define TYPE_RUNNING    1
+#define TYPE_WAITING    2
+#define TYPE_BLOCKED    3
+
+struct cpu_sample {
+        struct cpu_sample *next;
+
+        u64 start_time;
+        u64 end_time;
+        int type;
+        int cpu;
+};
+
+static struct per_pid *all_data;
+
+#define CSTATE 1
+#define PSTATE 2
+
+struct power_event {
+        struct power_event *next;
+        int type;
+        int state;
+        u64 start_time;
+        u64 end_time;
+        int cpu;
+};
+
+struct wake_event {
+        struct wake_event *next;
+        int waker;
+        int wakee;
+        u64 time;
+};
+
+static struct power_event    *power_events;
+static struct wake_event     *wake_events;
+
+struct sample_wrapper *all_samples;
+
+static struct per_pid *find_create_pid(int pid)
+{
+        struct per_pid *cursor = all_data;
+
+        while (cursor) {
+                if (cursor->pid == pid)
+                        return cursor;
+                cursor = cursor->next;
+        }
+        cursor = malloc(sizeof(struct per_pid));
+        assert(cursor != NULL);
+        memset(cursor, 0, sizeof(struct per_pid));
+        cursor->pid = pid;
+        cursor->next = all_data;
+        all_data = cursor;
+        return cursor;
+}
+
+static void pid_set_comm(int pid, char *comm)
+{
+        struct per_pid *p;
+        struct per_pidcomm *c;
+        p = find_create_pid(pid);
+        c = p->all;
+        while (c) {
+                if (c->comm && strcmp(c->comm, comm) == 0) {
+                        p->current = c;
+                        return;
+                }
+                if (!c->comm) {
+                        c->comm = strdup(comm);
+                        p->current = c;
+                        return;
+                }
+                c = c->next;
+        }
+        c = malloc(sizeof(struct per_pidcomm));
+        assert(c != NULL);
+        memset(c, 0, sizeof(struct per_pidcomm));
+        c->comm = strdup(comm);
+        p->current = c;
+        c->next = p->all;
+        p->all = c;
+}
+
+static void pid_fork(int pid, int ppid, u64 timestamp)
+{
+        struct per_pid *p, *pp;
+        p = find_create_pid(pid);
+        pp = find_create_pid(ppid);
+        p->ppid = ppid;
+        if (pp->current && pp->current->comm && !p->current)
+                pid_set_comm(pid, pp->current->comm);
+
+        p->start_time = timestamp;
+        if (p->current) {
+                p->current->start_time = timestamp;
+                p->current->state_since = timestamp;
+        }
+}
+
+static void pid_exit(int pid, u64 timestamp)
+{
+        struct per_pid *p;
+        p = find_create_pid(pid);
+        p->end_time = timestamp;
+        if (p->current)
+                p->current->end_time = timestamp;
+}
+
+static void
+pid_put_sample(int pid, int type, unsigned int cpu, u64 start, u64 end)
+{
+        struct per_pid *p;
+        struct per_pidcomm *c;
+        struct cpu_sample *sample;
+
+        p = find_create_pid(pid);
+        c = p->current;
+        if (!c) {
+                c = malloc(sizeof(struct per_pidcomm));
+                assert(c != NULL);
+                memset(c, 0, sizeof(struct per_pidcomm));
+                p->current = c;
+                c->next = p->all;
+                p->all = c;
+        }
+
+        sample = malloc(sizeof(struct cpu_sample));
+        assert(sample != NULL);
+        memset(sample, 0, sizeof(struct cpu_sample));
+        sample->start_time = start;
+        sample->end_time = end;
+        sample->type = type;
+        sample->next = c->samples;
+        sample->cpu = cpu;
+        c->samples = sample;
+
+        if (sample->type == TYPE_RUNNING && end > start && start > 0) {
+                c->total_time += (end-start);
+                p->total_time += (end-start);
+        }
+
+        if (c->start_time == 0 || c->start_time > start)
+                c->start_time = start;
+        if (p->start_time == 0 || p->start_time > start)
+                p->start_time = start;
+
+        if (cpu > numcpus)
+                numcpus = cpu;
+}
+
+#define MAX_CPUS 4096
+
+static u64 cpus_cstate_start_times[MAX_CPUS];
+static int cpus_cstate_state[MAX_CPUS];
+static u64 cpus_pstate_start_times[MAX_CPUS];
+static u64 cpus_pstate_state[MAX_CPUS];
+
+static int
+process_comm_event(event_t *event)
+{
+        pid_set_comm(event->comm.pid, event->comm.comm);
+        return 0;
+}
+static int
+process_fork_event(event_t *event)
+{
+        pid_fork(event->fork.pid, event->fork.ppid, event->fork.time);
+        return 0;
+}
+
+static int
+process_exit_event(event_t *event)
+{
+        pid_exit(event->fork.pid, event->fork.time);
+        return 0;
+}
+
+struct trace_entry {
+        u32                     size;
+        unsigned short          type;
+        unsigned char           flags;
+        unsigned char           preempt_count;
+        int                     pid;
+        int                     tgid;
+};
+
+struct power_entry {
+        struct trace_entry te;
+        s64     type;
+        s64     value;
+};
+
+#define TASK_COMM_LEN 16
+struct wakeup_entry {
+        struct trace_entry te;
+        char comm[TASK_COMM_LEN];
+        int   pid;
+        int   prio;
+        int   success;
+};
+
+/*
+ * trace_flag_type is an enumeration that holds different
+ * states when a trace occurs. These are:
+ *  IRQS_OFF            - interrupts were disabled
+ *  IRQS_NOSUPPORT      - arch does not support irqs_disabled_flags
+ *  NEED_RESCED         - reschedule is requested
+ *  HARDIRQ             - inside an interrupt handler
+ *  SOFTIRQ             - inside a softirq handler
+ */
+enum trace_flag_type {
+        TRACE_FLAG_IRQS_OFF             = 0x01,
+        TRACE_FLAG_IRQS_NOSUPPORT       = 0x02,
+        TRACE_FLAG_NEED_RESCHED         = 0x04,
+        TRACE_FLAG_HARDIRQ              = 0x08,
+        TRACE_FLAG_SOFTIRQ              = 0x10,
+};
+
+
+
+struct sched_switch {
+        struct trace_entry te;
+        char prev_comm[TASK_COMM_LEN];
+        int  prev_pid;
+        int  prev_prio;
+        long prev_state; /* Arjan weeps. */
+        char next_comm[TASK_COMM_LEN];
+        int  next_pid;
+        int  next_prio;
+};
+
+static void c_state_start(int cpu, u64 timestamp, int state)
+{
+        cpus_cstate_start_times[cpu] = timestamp;
+        cpus_cstate_state[cpu] = state;
+}
+
+static void c_state_end(int cpu, u64 timestamp)
+{
+        struct power_event *pwr;
+        pwr = malloc(sizeof(struct power_event));
+        if (!pwr)
+                return;
+        memset(pwr, 0, sizeof(struct power_event));
+
+        pwr->state = cpus_cstate_state[cpu];
+        pwr->start_time = cpus_cstate_start_times[cpu];
+        pwr->end_time = timestamp;
+        pwr->cpu = cpu;
+        pwr->type = CSTATE;
+        pwr->next = power_events;
+
+        power_events = pwr;
+}
+
+static void p_state_change(int cpu, u64 timestamp, u64 new_freq)
+{
+        struct power_event *pwr;
+        pwr = malloc(sizeof(struct power_event));
+
+        if (new_freq > 8000000) /* detect invalid data */
+                return;
+
+        if (!pwr)
+                return;
+        memset(pwr, 0, sizeof(struct power_event));
+
+        pwr->state = cpus_pstate_state[cpu];
+        pwr->start_time = cpus_pstate_start_times[cpu];
+        pwr->end_time = timestamp;
+        pwr->cpu = cpu;
+        pwr->type = PSTATE;
+        pwr->next = power_events;
+
+        if (!pwr->start_time)
+                pwr->start_time = first_time;
+
+        power_events = pwr;
+
+        cpus_pstate_state[cpu] = new_freq;
+        cpus_pstate_start_times[cpu] = timestamp;
+
+        if ((u64)new_freq > max_freq)
+                max_freq = new_freq;
+
+        if (new_freq < min_freq || min_freq == 0)
+                min_freq = new_freq;
+
+        if (new_freq == max_freq - 1000)
+                        turbo_frequency = max_freq;
+}
+
+static void
+sched_wakeup(int cpu, u64 timestamp, int pid, struct trace_entry *te)
+{
+        struct wake_event *we;
+        struct per_pid *p;
+        struct wakeup_entry *wake = (void *)te;
+
+        we = malloc(sizeof(struct wake_event));
+        if (!we)
+                return;
+
+        memset(we, 0, sizeof(struct wake_event));
+        we->time = timestamp;
+        we->waker = pid;
+
+        if ((te->flags & TRACE_FLAG_HARDIRQ) || (te->flags & TRACE_FLAG_SOFTIRQ))
+                we->waker = -1;
+
+        we->wakee = wake->pid;
+        we->next = wake_events;
+        wake_events = we;
+        p = find_create_pid(we->wakee);
+
+        if (p && p->current && p->current->state == TYPE_NONE) {
+                p->current->state_since = timestamp;
+                p->current->state = TYPE_WAITING;
+        }
+        if (p && p->current && p->current->state == TYPE_BLOCKED) {
+                pid_put_sample(p->pid, p->current->state, cpu, p->current->state_since, timestamp);
+                p->current->state_since = timestamp;
+                p->current->state = TYPE_WAITING;
+        }
+}
+
+static void sched_switch(int cpu, u64 timestamp, struct trace_entry *te)
+{
+        struct per_pid *p = NULL, *prev_p;
+        struct sched_switch *sw = (void *)te;
+
+
+        prev_p = find_create_pid(sw->prev_pid);
+
+        p = find_create_pid(sw->next_pid);
+
+        if (prev_p->current && prev_p->current->state != TYPE_NONE)
+                pid_put_sample(sw->prev_pid, TYPE_RUNNING, cpu, prev_p->current->state_since, timestamp);
+        if (p && p->current) {
+                if (p->current->state != TYPE_NONE)
+                        pid_put_sample(sw->next_pid, p->current->state, cpu, p->current->state_since, timestamp);
+
+                        p->current->state_since = timestamp;
+                        p->current->state = TYPE_RUNNING;
+        }
+
+        if (prev_p->current) {
+                prev_p->current->state = TYPE_NONE;
+                prev_p->current->state_since = timestamp;
+                if (sw->prev_state & 2)
+                        prev_p->current->state = TYPE_BLOCKED;
+                if (sw->prev_state == 0)
+                        prev_p->current->state = TYPE_WAITING;
+        }
+}
+
+
+static int
+process_sample_event(event_t *event)
+{
+        int cursor = 0;
+        u64 addr = 0;
+        u64 stamp = 0;
+        u32 cpu = 0;
+        u32 pid = 0;
+        struct trace_entry *te;
+
+        if (sample_type & PERF_SAMPLE_IP)
+                cursor++;
+
+        if (sample_type & PERF_SAMPLE_TID) {
+                pid = event->sample.array[cursor]>>32;
+                cursor++;
+        }
+        if (sample_type & PERF_SAMPLE_TIME) {
+                stamp = event->sample.array[cursor++];
+
+                if (!first_time || first_time > stamp)
+                        first_time = stamp;
+                if (last_time < stamp)
+                        last_time = stamp;
+
+        }
+        if (sample_type & PERF_SAMPLE_ADDR)
+                addr = event->sample.array[cursor++];
+        if (sample_type & PERF_SAMPLE_ID)
+                cursor++;
+        if (sample_type & PERF_SAMPLE_STREAM_ID)
+                cursor++;
+        if (sample_type & PERF_SAMPLE_CPU)
+                cpu = event->sample.array[cursor++] & 0xFFFFFFFF;
+        if (sample_type & PERF_SAMPLE_PERIOD)
+                cursor++;
+
+        te = (void *)&event->sample.array[cursor];
+
+        if (sample_type & PERF_SAMPLE_RAW && te->size > 0) {
+                char *event_str;
+                struct power_entry *pe;
+
+                pe = (void *)te;
+
+                event_str = perf_header__find_event(te->type);
+
+                if (!event_str)
+                        return 0;
+
+                if (strcmp(event_str, "power:power_start") == 0)
+                        c_state_start(cpu, stamp, pe->value);
+
+                if (strcmp(event_str, "power:power_end") == 0)
+                        c_state_end(cpu, stamp);
+
+                if (strcmp(event_str, "power:power_frequency") == 0)
+                        p_state_change(cpu, stamp, pe->value);
+
+                if (strcmp(event_str, "sched:sched_wakeup") == 0)
+                        sched_wakeup(cpu, stamp, pid, te);
+
+                if (strcmp(event_str, "sched:sched_switch") == 0)
+                        sched_switch(cpu, stamp, te);
+        }
+        return 0;
+}
+
+/*
+ * After the last sample we need to wrap up the current C/P state
+ * and close out each CPU for these.
+ */
+static void end_sample_processing(void)
+{
+        u64 cpu;
+        struct power_event *pwr;
+
+        for (cpu = 0; cpu < numcpus; cpu++) {
+                pwr = malloc(sizeof(struct power_event));
+                if (!pwr)
+                        return;
+                memset(pwr, 0, sizeof(struct power_event));
+
+                /* C state */
+#if 0
+                pwr->state = cpus_cstate_state[cpu];
+                pwr->start_time = cpus_cstate_start_times[cpu];
+                pwr->end_time = last_time;
+                pwr->cpu = cpu;
+                pwr->type = CSTATE;
+                pwr->next = power_events;
+
+                power_events = pwr;
+#endif
+                /* P state */
+
+                pwr = malloc(sizeof(struct power_event));
+                if (!pwr)
+                        return;
+                memset(pwr, 0, sizeof(struct power_event));
+
+                pwr->state = cpus_pstate_state[cpu];
+                pwr->start_time = cpus_pstate_start_times[cpu];
+                pwr->end_time = last_time;
+                pwr->cpu = cpu;
+                pwr->type = PSTATE;
+                pwr->next = power_events;
+
+                if (!pwr->start_time)
+                        pwr->start_time = first_time;
+                if (!pwr->state)
+                        pwr->state = min_freq;
+                power_events = pwr;
+        }
+}
+
+static u64 sample_time(event_t *event)
+{
+        int cursor;
+
+        cursor = 0;
+        if (sample_type & PERF_SAMPLE_IP)
+                cursor++;
+        if (sample_type & PERF_SAMPLE_TID)
+                cursor++;
+        if (sample_type & PERF_SAMPLE_TIME)
+                return event->sample.array[cursor];
+        return 0;
+}
+
+
+/*
+ * We first queue all events, sorted backwards by insertion.
+ * The order will get flipped later.
+ */
+static int
+queue_sample_event(event_t *event)
+{
+        struct sample_wrapper *copy, *prev;
+        int size;
+
+        size = event->sample.header.size + sizeof(struct sample_wrapper) + 8;
+
+        copy = malloc(size);
+        if (!copy)
+                return 1;
+
+        memset(copy, 0, size);
+
+        copy->next = NULL;
+        copy->timestamp = sample_time(event);
+
+        memcpy(&copy->data, event, event->sample.header.size);
+
+        /* insert in the right place in the list */
+
+        if (!all_samples) {
+                /* first sample ever */
+                all_samples = copy;
+                return 0;
+        }
+
+        if (all_samples->timestamp < copy->timestamp) {
+                /* insert at the head of the list */
+                copy->next = all_samples;
+                all_samples = copy;
+                return 0;
+        }
+
+        prev = all_samples;
+        while (prev->next) {
+                if (prev->next->timestamp < copy->timestamp) {
+                        copy->next = prev->next;
+                        prev->next = copy;
+                        return 0;
+                }
+                prev = prev->next;
+        }
+        /* insert at the end of the list */
+        prev->next = copy;
+
+        return 0;
+}
+
+static void sort_queued_samples(void)
+{
+        struct sample_wrapper *cursor, *next;
+
+        cursor = all_samples;
+        all_samples = NULL;
+
+        while (cursor) {
+                next = cursor->next;
+                cursor->next = all_samples;
+                all_samples = cursor;
+                cursor = next;
+        }
+}
+
+/*
+ * Sort the pid datastructure
+ */
+static void sort_pids(void)
+{
+        struct per_pid *new_list, *p, *cursor, *prev;
+        /* sort by ppid first, then by pid, lowest to highest */
+
+        new_list = NULL;
+
+        while (all_data) {
+                p = all_data;
+                all_data = p->next;
+                p->next = NULL;
+
+                if (new_list == NULL) {
+                        new_list = p;
+                        p->next = NULL;
+                        continue;
+                }
+                prev = NULL;
+                cursor = new_list;
+                while (cursor) {
+                        if (cursor->ppid > p->ppid ||
+                                (cursor->ppid == p->ppid && cursor->pid > p->pid)) {
+                                /* must insert before */
+                                if (prev) {
+                                        p->next = prev->next;
+                                        prev->next = p;
+                                        cursor = NULL;
+                                        continue;
+                                } else {
+                                        p->next = new_list;
+                                        new_list = p;
+                                        cursor = NULL;
+                                        continue;
+                                }
+                        }
+
+                        prev = cursor;
+                        cursor = cursor->next;
+                        if (!cursor)
+                                prev->next = p;
+                }
+        }
+        all_data = new_list;
+}
+
+
+static void draw_c_p_states(void)
+{
+        struct power_event *pwr;
+        pwr = power_events;
+
+        /*
+         * two pass drawing so that the P state bars are on top of the C state blocks
+         */
+        while (pwr) {
+                if (pwr->type == CSTATE)
+                        svg_cstate(pwr->cpu, pwr->start_time, pwr->end_time, pwr->state);
+                pwr = pwr->next;
+        }
+
+        pwr = power_events;
+        while (pwr) {
+                if (pwr->type == PSTATE) {
+                        if (!pwr->state)
+                                pwr->state = min_freq;
+                        svg_pstate(pwr->cpu, pwr->start_time, pwr->end_time, pwr->state);
+                }
+                pwr = pwr->next;
+        }
+}
+
+static void draw_wakeups(void)
+{
+        struct wake_event *we;
+        struct per_pid *p;
+        struct per_pidcomm *c;
+
+        we = wake_events;
+        while (we) {
+                int from = 0, to = 0;
+
+                /* locate the column of the waker and wakee */
+                p = all_data;
+                while (p) {
+                        if (p->pid == we->waker || p->pid == we->wakee) {
+                                c = p->all;
+                                while (c) {
+                                        if (c->Y && c->start_time <= we->time && c->end_time >= we->time) {
+                                                if (p->pid == we->waker)
+                                                        from = c->Y;
+                                                if (p->pid == we->wakee)
+                                                        to = c->Y;
+                                        }
+                                        c = c->next;
+                                }
+                        }
+                        p = p->next;
+                }
+
+                if (we->waker == -1)
+                        svg_interrupt(we->time, to);
+                else if (from && to && abs(from - to) == 1)
+                        svg_wakeline(we->time, from, to);
+                else
+                        svg_partial_wakeline(we->time, from, to);
+                we = we->next;
+        }
+}
+
+static void draw_cpu_usage(void)
+{
+        struct per_pid *p;
+        struct per_pidcomm *c;
+        struct cpu_sample *sample;
+        p = all_data;
+        while (p) {
+                c = p->all;
+                while (c) {
+                        sample = c->samples;
+                        while (sample) {
+                                if (sample->type == TYPE_RUNNING)
+                                        svg_process(sample->cpu, sample->start_time, sample->end_time, "sample", c->comm);
+
+                                sample = sample->next;
+                        }
+                        c = c->next;
+                }
+                p = p->next;
+        }
+}
+
+static void draw_process_bars(void)
+{
+        struct per_pid *p;
+        struct per_pidcomm *c;
+        struct cpu_sample *sample;
+        int Y = 0;
+
+        Y = 2 * numcpus + 2;
+
+        p = all_data;
+        while (p) {
+                c = p->all;
+                while (c) {
+                        if (!c->display) {
+                                c->Y = 0;
+                                c = c->next;
+                                continue;
+                        }
+
+                        svg_box(Y, p->start_time, p->end_time, "process");
+                        sample = c->samples;
+                        while (sample) {
+                                if (sample->type == TYPE_RUNNING)
+                                        svg_sample(Y, sample->cpu, sample->start_time, sample->end_time, "sample");
+                                if (sample->type == TYPE_BLOCKED)
+                                        svg_box(Y, sample->start_time, sample->end_time, "blocked");
+                                if (sample->type == TYPE_WAITING)
+                                        svg_box(Y, sample->start_time, sample->end_time, "waiting");
+                                sample = sample->next;
+                        }
+
+                        if (c->comm) {
+                                char comm[256];
+                                if (c->total_time > 5000000000) /* 5 seconds */
+                                        sprintf(comm, "%s:%i (%2.2fs)", c->comm, p->pid, c->total_time / 1000000000.0);
+                                else
+                                        sprintf(comm, "%s:%i (%3.1fms)", c->comm, p->pid, c->total_time / 1000000.0);
+
+                                svg_text(Y, c->start_time, comm);
+                        }
+                        c->Y = Y;
+                        Y++;
+                        c = c->next;
+                }
+                p = p->next;
+        }
+}
+
+static int determine_display_tasks(u64 threshold)
+{
+        struct per_pid *p;
+        struct per_pidcomm *c;
+        int count = 0;
+
+        p = all_data;
+        while (p) {
+                p->display = 0;
+                if (p->start_time == 1)
+                        p->start_time = first_time;
+
+                /* no exit marker, task kept running to the end */
+                if (p->end_time == 0)
+                        p->end_time = last_time;
+                if (p->total_time >= threshold)
+                        p->display = 1;
+
+                c = p->all;
+
+                while (c) {
+                        c->display = 0;
+
+                        if (c->start_time == 1)
+                                c->start_time = first_time;
+
+                        if (c->total_time >= threshold) {
+                                c->display = 1;
+                                count++;
+                        }
+
+                        if (c->end_time == 0)
+                                c->end_time = last_time;
+
+                        c = c->next;
+                }
+                p = p->next;
+        }
+        return count;
+}
+
+
+
+#define TIME_THRESH 10000000
+
+static void write_svg_file(const char *filename)
+{
+        u64 i;
+        int count;
+
+        numcpus++;
+
+
+        count = determine_display_tasks(TIME_THRESH);
+
+        /* We'd like to show at least 15 tasks; be less picky if we have fewer */
+        if (count < 15)
+                count = determine_display_tasks(TIME_THRESH / 10);
+
+        open_svg(filename, numcpus, count);
+
+        svg_time_grid(first_time, last_time);
+        svg_legenda();
+
+        for (i = 0; i < numcpus; i++)
+                svg_cpu_box(i, max_freq, turbo_frequency);
+
+        draw_cpu_usage();
+        draw_process_bars();
+        draw_c_p_states();
+        draw_wakeups();
+
+        svg_close();
+}
+
+static int
+process_event(event_t *event)
+{
+
+        switch (event->header.type) {
+
+        case PERF_EVENT_COMM:
+                return process_comm_event(event);
+        case PERF_EVENT_FORK:
+                return process_fork_event(event);
+        case PERF_EVENT_EXIT:
+                return process_exit_event(event);
+        case PERF_EVENT_SAMPLE:
+                return queue_sample_event(event);
+
+        /*
+         * We dont process them right now but they are fine:
+         */
+        case PERF_EVENT_MMAP:
+        case PERF_EVENT_THROTTLE:
+        case PERF_EVENT_UNTHROTTLE:
+                return 0;
+
+        default:
+                return -1;
+        }
+
+        return 0;
+}
+
+static void process_samples(void)
+{
+        struct sample_wrapper *cursor;
+        event_t *event;
+
+        sort_queued_samples();
+
+        cursor = all_samples;
+        while (cursor) {
+                event = (void *)&cursor->data;
+                cursor = cursor->next;
+                process_sample_event(event);
+        }
+}
+
+
+static int __cmd_timechart(void)
+{
+        int ret, rc = EXIT_FAILURE;
+        unsigned long offset = 0;
+        unsigned long head, shift;
+        struct stat statbuf;
+        event_t *event;
+        uint32_t size;
+        char *buf;
+        int input;
+
+        input = open(input_name, O_RDONLY);
+        if (input < 0) {
+                fprintf(stderr, " failed to open file: %s", input_name);
+                if (!strcmp(input_name, "perf.data"))
+                        fprintf(stderr, "  (try 'perf record' first)");
+                fprintf(stderr, "\n");
+                exit(-1);
+        }
+
+        ret = fstat(input, &statbuf);
+        if (ret < 0) {
+                perror("failed to stat file");
+                exit(-1);
+        }
+
+        if (!statbuf.st_size) {
+                fprintf(stderr, "zero-sized file, nothing to do!\n");
+                exit(0);
+        }
+
+        header = perf_header__read(input);
+        head = header->data_offset;
+
+        sample_type = perf_header__sample_type(header);
+
+        shift = page_size * (head / page_size);
+        offset += shift;
+        head -= shift;
+
+remap:
+        buf = (char *)mmap(NULL, page_size * mmap_window, PROT_READ,
+                           MAP_SHARED, input, offset);
+        if (buf == MAP_FAILED) {
+                perror("failed to mmap file");
+                exit(-1);
+        }
+
+more:
+        event = (event_t *)(buf + head);
+
+        size = event->header.size;
+        if (!size)
+                size = 8;
+
+        if (head + event->header.size >= page_size * mmap_window) {
+                int ret2;
+
+                shift = page_size * (head / page_size);
+
+                ret2 = munmap(buf, page_size * mmap_window);
+                assert(ret2 == 0);
+
+                offset += shift;
+                head -= shift;
+                goto remap;
+        }
+
+        size = event->header.size;
+
+        if (!size || process_event(event) < 0) {
+
+                printf("%p [%p]: skipping unknown header type: %d\n",
+                        (void *)(offset + head),
+                        (void *)(long)(event->header.size),
+                        event->header.type);
+
+                /*
+                 * assume we lost track of the stream, check alignment, and
+                 * increment a single u64 in the hope to catch on again 'soon'.
+                 */
+
+                if (unlikely(head & 7))
+                        head &= ~7ULL;
+
+                size = 8;
+        }
+
+        head += size;
+
+        if (offset + head >= header->data_offset + header->data_size)
+                goto done;
+
+        if (offset + head < (unsigned long)statbuf.st_size)
+                goto more;
+
+done:
+        rc = EXIT_SUCCESS;
+        close(input);
+
+
+        process_samples();
+
+        end_sample_processing();
+
+        sort_pids();
+
+        write_svg_file(output_name);
+
+        printf("Written %2.1f seconds of trace to %s.\n", (last_time - first_time) / 1000000000.0, output_name);
+
+        return rc;
+}
+
+static const char * const timechart_usage[] = {
+        "perf timechart [<options>] {record}",
+        NULL
+};
+
+static const char *record_args[] = {
+        "record",
+        "-a",
+        "-R",
+        "-M",
+        "-f",
+        "-c", "1",
+        "-e", "power:power_start",
+        "-e", "power:power_end",
+        "-e", "power:power_frequency",
+        "-e", "sched:sched_wakeup",
+        "-e", "sched:sched_switch",
+};
+
+static int __cmd_record(int argc, const char **argv)
+{
+        unsigned int rec_argc, i, j;
+        const char **rec_argv;
+
+        rec_argc = ARRAY_SIZE(record_args) + argc - 1;
+        rec_argv = calloc(rec_argc + 1, sizeof(char *));
+
+        for (i = 0; i < ARRAY_SIZE(record_args); i++)
+                rec_argv[i] = strdup(record_args[i]);
+
+        for (j = 1; j < (unsigned int)argc; j++, i++)
+                rec_argv[i] = argv[j];
+
+        return cmd_record(i, rec_argv, NULL);
+}
+
+static const struct option options[] = {
+        OPT_STRING('i', "input", &input_name, "file",
+                    "input file name"),
+        OPT_STRING('o', "output", &output_name, "file",
+                    "output file name"),
+        OPT_END()
+};
+
+
+int cmd_timechart(int argc, const char **argv, const char *prefix __used)
+{
+        symbol__init();
+
+        page_size = getpagesize();
+
+        argc = parse_options(argc, argv, options, timechart_usage,
+                        PARSE_OPT_STOP_AT_NON_OPTION);
+
+        if (argc && !strncmp(argv[0], "rec", 3))
+                return __cmd_record(argc, argv);
+        else if (argc)
+                usage_with_options(timechart_usage, options);
+
+        setup_pager();
+
+        return __cmd_timechart();
+}
diff --git a/tools/perf/builtin.h b/tools/perf/builtin.h
index 3a63e41fb44e..e11d8d231c3b 100644
--- a/tools/perf/builtin.h
+++ b/tools/perf/builtin.h
@@ -16,12 +16,14 @@ extern int check_pager_config(const char *cmd);
 
 extern int cmd_annotate(int argc, const char **argv, const char *prefix);
 extern int cmd_help(int argc, const char **argv, const char *prefix);
+extern int cmd_sched(int argc, const char **argv, const char *prefix);
+extern int cmd_list(int argc, const char **argv, const char *prefix);
 extern int cmd_record(int argc, const char **argv, const char *prefix);
 extern int cmd_report(int argc, const char **argv, const char *prefix);
 extern int cmd_stat(int argc, const char **argv, const char *prefix);
+extern int cmd_timechart(int argc, const char **argv, const char *prefix);
 extern int cmd_top(int argc, const char **argv, const char *prefix);
-extern int cmd_version(int argc, const char **argv, const char *prefix);
-extern int cmd_list(int argc, const char **argv, const char *prefix);
 extern int cmd_trace(int argc, const char **argv, const char *prefix);
+extern int cmd_version(int argc, const char **argv, const char *prefix);
 
 #endif
diff --git a/tools/perf/command-list.txt b/tools/perf/command-list.txt
index eebce30afbc0..00326e230d87 100644
--- a/tools/perf/command-list.txt
+++ b/tools/perf/command-list.txt
@@ -4,7 +4,10 @@
 #
 perf-annotate                   mainporcelain common
 perf-list                       mainporcelain common
+perf-sched                      mainporcelain common
 perf-record                     mainporcelain common
 perf-report                     mainporcelain common
 perf-stat                       mainporcelain common
+perf-timechart                  mainporcelain common
 perf-top                        mainporcelain common
+perf-trace                      mainporcelain common
diff --git a/tools/perf/perf.c b/tools/perf/perf.c
index fe4589dde950..19fc7feb9d59 100644
--- a/tools/perf/perf.c
+++ b/tools/perf/perf.c
@@ -289,10 +289,12 @@ static void handle_internal_command(int argc, const char **argv)
                 { "record", cmd_record, 0 },
                 { "report", cmd_report, 0 },
                 { "stat", cmd_stat, 0 },
+                { "timechart", cmd_timechart, 0 },
                 { "top", cmd_top, 0 },
                 { "annotate", cmd_annotate, 0 },
                 { "version", cmd_version, 0 },
                 { "trace", cmd_trace, 0 },
+                { "sched", cmd_sched, 0 },
         };
         unsigned int i;
         static const char ext[] = STRIP_EXTENSION;
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index fa2d4e91d329..018d414a09d1 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -39,6 +39,7 @@ struct fork_event {
         struct perf_event_header header;
         u32 pid, ppid;
         u32 tid, ptid;
+        u64 time;
 };
 
 struct lost_event {
@@ -52,13 +53,19 @@ struct lost_event {
  */
 struct read_event {
         struct perf_event_header header;
-        u32 pid,tid;
+        u32 pid, tid;
         u64 value;
         u64 time_enabled;
         u64 time_running;
         u64 id;
 };
 
+struct sample_event{
+        struct perf_event_header        header;
+        u64 array[];
+};
+
+
 typedef union event_union {
         struct perf_event_header        header;
         struct ip_event                 ip;
@@ -67,6 +74,7 @@ typedef union event_union {
         struct fork_event               fork;
         struct lost_event               lost;
         struct read_event               read;
+        struct sample_event             sample;
 } event_t;
 
 struct map {
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index ec4d4c2f9522..bb4fca3efcc3 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -7,9 +7,8 @@
 #include "header.h"
 
 /*
- *
+ * Create new perf.data header attribute:
  */
-
 struct perf_header_attr *perf_header_attr__new(struct perf_counter_attr *attr)
 {
         struct perf_header_attr *self = malloc(sizeof(*self));
@@ -43,9 +42,8 @@ void perf_header_attr__add_id(struct perf_header_attr *self, u64 id)
 }
 
 /*
- *
+ * Create new perf.data header:
  */
-
 struct perf_header *perf_header__new(void)
 {
         struct perf_header *self = malloc(sizeof(*self));
@@ -86,6 +84,46 @@ void perf_header__add_attr(struct perf_header *self,
         self->attr[pos] = attr;
 }
 
+#define MAX_EVENT_NAME 64
+
+struct perf_trace_event_type {
+        u64     event_id;
+        char    name[MAX_EVENT_NAME];
+};
+
+static int event_count;
+static struct perf_trace_event_type *events;
+
+void perf_header__push_event(u64 id, const char *name)
+{
+        if (strlen(name) > MAX_EVENT_NAME)
+                printf("Event %s will be truncated\n", name);
+
+        if (!events) {
+                events = malloc(sizeof(struct perf_trace_event_type));
+                if (!events)
+                        die("nomem");
+        } else {
+                events = realloc(events, (event_count + 1) * sizeof(struct perf_trace_event_type));
+                if (!events)
+                        die("nomem");
+        }
+        memset(&events[event_count], 0, sizeof(struct perf_trace_event_type));
+        events[event_count].event_id = id;
+        strncpy(events[event_count].name, name, MAX_EVENT_NAME - 1);
+        event_count++;
+}
+
+char *perf_header__find_event(u64 id)
+{
+        int i;
+        for (i = 0 ; i < event_count; i++) {
+                if (events[i].event_id == id)
+                        return events[i].name;
+        }
+        return NULL;
+}
+
 static const char *__perf_magic = "PERFFILE";
 
 #define PERF_MAGIC      (*(u64 *)__perf_magic)
@@ -106,6 +144,7 @@ struct perf_file_header {
         u64                             attr_size;
         struct perf_file_section        attrs;
         struct perf_file_section        data;
+        struct perf_file_section        event_types;
 };
 
 static void do_write(int fd, void *buf, size_t size)
@@ -154,6 +193,11 @@ void perf_header__write(struct perf_header *self, int fd)
                 do_write(fd, &f_attr, sizeof(f_attr));
         }
 
+        self->event_offset = lseek(fd, 0, SEEK_CUR);
+        self->event_size = event_count * sizeof(struct perf_trace_event_type);
+        if (events)
+                do_write(fd, events, self->event_size);
+
 
         self->data_offset = lseek(fd, 0, SEEK_CUR);
 
@@ -169,6 +213,10 @@ void perf_header__write(struct perf_header *self, int fd)
                         .offset = self->data_offset,
                         .size   = self->data_size,
                 },
+                .event_types = {
+                        .offset = self->event_offset,
+                        .size   = self->event_size,
+                },
         };
 
         lseek(fd, 0, SEEK_SET);
@@ -234,6 +282,17 @@ struct perf_header *perf_header__read(int fd)
                 lseek(fd, tmp, SEEK_SET);
         }
 
+        if (f_header.event_types.size) {
+                lseek(fd, f_header.event_types.offset, SEEK_SET);
+                events = malloc(f_header.event_types.size);
+                if (!events)
+                        die("nomem");
+                do_read(fd, events, f_header.event_types.size);
+                event_count =  f_header.event_types.size / sizeof(struct perf_trace_event_type);
+        }
+        self->event_offset = f_header.event_types.offset;
+        self->event_size   = f_header.event_types.size;
+
         self->data_offset = f_header.data.offset;
         self->data_size   = f_header.data.size;
 
diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h
index 5d0a72ecc919..7b0e84a87179 100644
--- a/tools/perf/util/header.h
+++ b/tools/perf/util/header.h
@@ -19,6 +19,8 @@ struct perf_header {
         s64 attr_offset;
         u64 data_offset;
         u64 data_size;
+        u64 event_offset;
+        u64 event_size;
 };
 
 struct perf_header *perf_header__read(int fd);
@@ -27,6 +29,10 @@ void perf_header__write(struct perf_header *self, int fd);
 void perf_header__add_attr(struct perf_header *self,
                            struct perf_header_attr *attr);
 
+void perf_header__push_event(u64 id, const char *name);
+char *perf_header__find_event(u64 id);
+
+
 struct perf_header_attr *
 perf_header_attr__new(struct perf_counter_attr *attr);
 void perf_header_attr__add_id(struct perf_header_attr *self, u64 id);
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index a587d41ae3c9..89172fd0038b 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -6,6 +6,7 @@
 #include "exec_cmd.h"
 #include "string.h"
 #include "cache.h"
+#include "header.h"
 
 int                                     nr_counters;
 
@@ -18,6 +19,12 @@ struct event_symbol {
         const char      *alias;
 };
 
+enum event_result {
+        EVT_FAILED,
+        EVT_HANDLED,
+        EVT_HANDLED_ALL
+};
+
 char debugfs_path[MAXPATHLEN];
 
 #define CHW(x) .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_##x
@@ -139,7 +146,7 @@ static int tp_event_has_id(struct dirent *sys_dir, struct dirent *evt_dir)
            (strcmp(evt_dirent.d_name, "..")) &&                                \
            (!tp_event_has_id(&sys_dirent, &evt_dirent)))
 
-#define MAX_EVENT_LENGTH 30
+#define MAX_EVENT_LENGTH 512
 
 int valid_debugfs_mount(const char *debugfs)
 {
@@ -344,7 +351,7 @@ static int parse_aliases(const char **str, const char *names[][MAX_ALIASES], int
         return -1;
 }
 
-static int
+static enum event_result
 parse_generic_hw_event(const char **str, struct perf_counter_attr *attr)
 {
         const char *s = *str;
@@ -356,7 +363,7 @@ parse_generic_hw_event(const char **str, struct perf_counter_attr *attr)
          * then bail out:
          */
         if (cache_type == -1)
-                return 0;
+                return EVT_FAILED;
 
         while ((cache_op == -1 || cache_result == -1) && *s == '-') {
                 ++s;
@@ -402,27 +409,115 @@ parse_generic_hw_event(const char **str, struct perf_counter_attr *attr)
         attr->type = PERF_TYPE_HW_CACHE;
 
         *str = s;
-        return 1;
+        return EVT_HANDLED;
+}
+
+static enum event_result
+parse_single_tracepoint_event(char *sys_name,
+                              const char *evt_name,
+                              unsigned int evt_length,
+                              char *flags,
+                              struct perf_counter_attr *attr,
+                              const char **strp)
+{
+        char evt_path[MAXPATHLEN];
+        char id_buf[4];
+        u64 id;
+        int fd;
+
+        if (flags) {
+                if (!strncmp(flags, "record", strlen(flags))) {
+                        attr->sample_type |= PERF_SAMPLE_RAW;
+                        attr->sample_type |= PERF_SAMPLE_TIME;
+                        attr->sample_type |= PERF_SAMPLE_CPU;
+                }
+        }
+
+        snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", debugfs_path,
+                 sys_name, evt_name);
+
+        fd = open(evt_path, O_RDONLY);
+        if (fd < 0)
+                return EVT_FAILED;
+
+        if (read(fd, id_buf, sizeof(id_buf)) < 0) {
+                close(fd);
+                return EVT_FAILED;
+        }
+
+        close(fd);
+        id = atoll(id_buf);
+        attr->config = id;
+        attr->type = PERF_TYPE_TRACEPOINT;
+        *strp = evt_name + evt_length;
+
+        return EVT_HANDLED;
+}
+
+/* sys + ':' + event + ':' + flags*/
+#define MAX_EVOPT_LEN   (MAX_EVENT_LENGTH * 2 + 2 + 128)
+static enum event_result
+parse_subsystem_tracepoint_event(char *sys_name, char *flags)
+{
+        char evt_path[MAXPATHLEN];
+        struct dirent *evt_ent;
+        DIR *evt_dir;
+
+        snprintf(evt_path, MAXPATHLEN, "%s/%s", debugfs_path, sys_name);
+        evt_dir = opendir(evt_path);
+
+        if (!evt_dir) {
+                perror("Can't open event dir");
+                return EVT_FAILED;
+        }
+
+        while ((evt_ent = readdir(evt_dir))) {
+                char event_opt[MAX_EVOPT_LEN + 1];
+                int len;
+                unsigned int rem = MAX_EVOPT_LEN;
+
+                if (!strcmp(evt_ent->d_name, ".")
+                    || !strcmp(evt_ent->d_name, "..")
+                    || !strcmp(evt_ent->d_name, "enable")
+                    || !strcmp(evt_ent->d_name, "filter"))
+                        continue;
+
+                len = snprintf(event_opt, MAX_EVOPT_LEN, "%s:%s", sys_name,
+                               evt_ent->d_name);
+                if (len < 0)
+                        return EVT_FAILED;
+
+                rem -= len;
+                if (flags) {
+                        if (rem < strlen(flags) + 1)
+                                return EVT_FAILED;
+
+                        strcat(event_opt, ":");
+                        strcat(event_opt, flags);
+                }
+
+                if (parse_events(NULL, event_opt, 0))
+                        return EVT_FAILED;
+        }
+
+        return EVT_HANDLED_ALL;
 }
 
-static int parse_tracepoint_event(const char **strp,
+
+static enum event_result parse_tracepoint_event(const char **strp,
                                     struct perf_counter_attr *attr)
 {
         const char *evt_name;
         char *flags;
         char sys_name[MAX_EVENT_LENGTH];
-        char id_buf[4];
-        int fd;
         unsigned int sys_length, evt_length;
-        u64 id;
-        char evt_path[MAXPATHLEN];
 
         if (valid_debugfs_mount(debugfs_path))
                 return 0;
 
         evt_name = strchr(*strp, ':');
         if (!evt_name)
-                return 0;
+                return EVT_FAILED;
 
         sys_length = evt_name - *strp;
         if (sys_length >= MAX_EVENT_LENGTH)
@@ -434,32 +529,22 @@ static int parse_tracepoint_event(const char **strp,
 
         flags = strchr(evt_name, ':');
         if (flags) {
-                *flags = '\0';
+                /* split it out: */
+                evt_name = strndup(evt_name, flags - evt_name);
                 flags++;
-                if (!strncmp(flags, "record", strlen(flags)))
-                        attr->sample_type |= PERF_SAMPLE_RAW;
         }
 
         evt_length = strlen(evt_name);
         if (evt_length >= MAX_EVENT_LENGTH)
-                return 0;
-
-        snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", debugfs_path,
-                 sys_name, evt_name);
-        fd = open(evt_path, O_RDONLY);
-        if (fd < 0)
-                return 0;
+                return EVT_FAILED;
 
-        if (read(fd, id_buf, sizeof(id_buf)) < 0) {
-                close(fd);
-                return 0;
-        }
-        close(fd);
-        id = atoll(id_buf);
-        attr->config = id;
-        attr->type = PERF_TYPE_TRACEPOINT;
-        *strp = evt_name + evt_length;
-        return 1;
+        if (!strcmp(evt_name, "*")) {
+                *strp = evt_name + evt_length;
+                return parse_subsystem_tracepoint_event(sys_name, flags);
+        } else
+                return parse_single_tracepoint_event(sys_name, evt_name,
+                                                     evt_length, flags,
+                                                     attr, strp);
 }
 
 static int check_events(const char *str, unsigned int i)
@@ -477,7 +562,7 @@ static int check_events(const char *str, unsigned int i)
         return 0;
 }
 
-static int
+static enum event_result
 parse_symbolic_event(const char **strp, struct perf_counter_attr *attr)
 {
         const char *str = *strp;
@@ -490,31 +575,32 @@ parse_symbolic_event(const char **strp, struct perf_counter_attr *attr)
                         attr->type = event_symbols[i].type;
                         attr->config = event_symbols[i].config;
                         *strp = str + n;
-                        return 1;
+                        return EVT_HANDLED;
                 }
         }
-        return 0;
+        return EVT_FAILED;
 }
 
-static int parse_raw_event(const char **strp, struct perf_counter_attr *attr)
+static enum event_result
+parse_raw_event(const char **strp, struct perf_counter_attr *attr)
 {
         const char *str = *strp;
         u64 config;
         int n;
 
         if (*str != 'r')
-                return 0;
+                return EVT_FAILED;
         n = hex2u64(str + 1, &config);
         if (n > 0) {
                 *strp = str + n + 1;
                 attr->type = PERF_TYPE_RAW;
                 attr->config = config;
-                return 1;
+                return EVT_HANDLED;
         }
-        return 0;
+        return EVT_FAILED;
 }
 
-static int
+static enum event_result
 parse_numeric_event(const char **strp, struct perf_counter_attr *attr)
 {
         const char *str = *strp;
@@ -530,13 +616,13 @@ parse_numeric_event(const char **strp, struct perf_counter_attr *attr)
                         attr->type = type;
                         attr->config = config;
                         *strp = endp;
-                        return 1;
+                        return EVT_HANDLED;
                 }
         }
-        return 0;
+        return EVT_FAILED;
 }
 
-static int
+static enum event_result
 parse_event_modifier(const char **strp, struct perf_counter_attr *attr)
 {
         const char *str = *strp;
@@ -569,37 +655,84 @@ parse_event_modifier(const char **strp, struct perf_counter_attr *attr)
  * Each event can have multiple symbolic names.
  * Symbolic names are (almost) exactly matched.
  */
-static int parse_event_symbols(const char **str, struct perf_counter_attr *attr)
+static enum event_result
+parse_event_symbols(const char **str, struct perf_counter_attr *attr)
 {
-        if (!(parse_tracepoint_event(str, attr) ||
-              parse_raw_event(str, attr) ||
-              parse_numeric_event(str, attr) ||
-              parse_symbolic_event(str, attr) ||
-              parse_generic_hw_event(str, attr)))
-                return 0;
+        enum event_result ret;
+
+        ret = parse_tracepoint_event(str, attr);
+        if (ret != EVT_FAILED)
+                goto modifier;
+
+        ret = parse_raw_event(str, attr);
+        if (ret != EVT_FAILED)
+                goto modifier;
+
+        ret = parse_numeric_event(str, attr);
+        if (ret != EVT_FAILED)
+                goto modifier;
+
+        ret = parse_symbolic_event(str, attr);
+        if (ret != EVT_FAILED)
+                goto modifier;
 
+        ret = parse_generic_hw_event(str, attr);
+        if (ret != EVT_FAILED)
+                goto modifier;
+
+        return EVT_FAILED;
+
+modifier:
         parse_event_modifier(str, attr);
 
-        return 1;
+        return ret;
 }
 
+static void store_event_type(const char *orgname)
+{
+        char filename[PATH_MAX], *c;
+        FILE *file;
+        int id;
+
+        sprintf(filename, "/sys/kernel/debug/tracing/events/%s/id", orgname);
+        c = strchr(filename, ':');
+        if (c)
+                *c = '/';
+
+        file = fopen(filename, "r");
+        if (!file)
+                return;
+        if (fscanf(file, "%i", &id) < 1)
+                die("cannot store event ID");
+        fclose(file);
+        perf_header__push_event(id, orgname);
+}
+
+
 int parse_events(const struct option *opt __used, const char *str, int unset __used)
 {
         struct perf_counter_attr attr;
+        enum event_result ret;
+
+        if (strchr(str, ':'))
+                store_event_type(str);
 
         for (;;) {
                 if (nr_counters == MAX_COUNTERS)
                         return -1;
 
                 memset(&attr, 0, sizeof(attr));
-                if (!parse_event_symbols(&str, &attr))
+                ret = parse_event_symbols(&str, &attr);
+                if (ret == EVT_FAILED)
                         return -1;
 
                 if (!(*str == 0 || *str == ',' || isspace(*str)))
                         return -1;
 
-                attrs[nr_counters] = attr;
-                nr_counters++;
+                if (ret != EVT_HANDLED_ALL) {
+                        attrs[nr_counters] = attr;
+                        nr_counters++;
+                }
 
                 if (*str == 0)
                         break;
diff --git a/tools/perf/util/parse-options.h b/tools/perf/util/parse-options.h
index 8aa3464c7090..2ee248ff27e5 100644
--- a/tools/perf/util/parse-options.h
+++ b/tools/perf/util/parse-options.h
@@ -104,6 +104,8 @@ struct option {
         { .type = OPTION_CALLBACK, .short_name = (s), .long_name = (l), .value = (v), .argh = "time", .help = (h), .callback = parse_opt_approxidate_cb }
 #define OPT_CALLBACK(s, l, v, a, h, f) \
         { .type = OPTION_CALLBACK, .short_name = (s), .long_name = (l), .value = (v), (a), .help = (h), .callback = (f) }
+#define OPT_CALLBACK_NOOPT(s, l, v, a, h, f) \
+        { .type = OPTION_CALLBACK, .short_name = (s), .long_name = (l), .value = (v), (a), .help = (h), .callback = (f), .flags = PARSE_OPT_NOARG }
 #define OPT_CALLBACK_DEFAULT(s, l, v, a, h, f, d) \
         { .type = OPTION_CALLBACK, .short_name = (s), .long_name = (l), .value = (v), (a), .help = (h), .callback = (f), .defval = (intptr_t)d, .flags = PARSE_OPT_LASTARG_DEFAULT }
 
diff --git a/tools/perf/util/svghelper.c b/tools/perf/util/svghelper.c
new file mode 100644
index 000000000000..b0fcecdf378d
--- /dev/null
+++ b/tools/perf/util/svghelper.c
@@ -0,0 +1,384 @@
+/*
+ * svghelper.c - helper functions for outputting svg
+ *
+ * (C) Copyright 2009 Intel Corporation
+ *
+ * Authors:
+ *     Arjan van de Ven <arjan@linux.intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; version 2
+ * of the License.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+
+#include "svghelper.h"
+
+static u64 first_time, last_time;
+static u64 turbo_frequency, max_freq;
+
+
+#define SLOT_MULT 30.0
+#define SLOT_HEIGHT 25.0
+#define WIDTH 1000.0
+
+#define MIN_TEXT_SIZE 0.001
+
+static u64 total_height;
+static FILE *svgfile;
+
+static double cpu2slot(int cpu)
+{
+        return 2 * cpu + 1;
+}
+
+static double cpu2y(int cpu)
+{
+        return cpu2slot(cpu) * SLOT_MULT;
+}
+
+static double time2pixels(u64 time)
+{
+        double X;
+
+        X = WIDTH * (time - first_time) / (last_time - first_time);
+        return X;
+}
+
+void open_svg(const char *filename, int cpus, int rows)
+{
+
+        svgfile = fopen(filename, "w");
+        if (!svgfile) {
+                fprintf(stderr, "Cannot open %s for output\n", filename);
+                return;
+        }
+        total_height = (1 + rows + cpu2slot(cpus)) * SLOT_MULT;
+        fprintf(svgfile, "<?xml version=\"1.0\" standalone=\"no\"?> \n");
+        fprintf(svgfile, "<svg width=\"%4.1f\" height=\"%llu\" version=\"1.1\" xmlns=\"http://www.w3.org/2000/svg\">\n", WIDTH, total_height);
+
+        fprintf(svgfile, "<defs>\n  <style type=\"text/css\">\n    <![CDATA[\n");
+
+        fprintf(svgfile, "      rect          { stroke-width: 1; }\n");
+        fprintf(svgfile, "      rect.process  { fill:rgb(180,180,180); fill-opacity:0.9; stroke-width:1;   stroke:rgb(  0,  0,  0); } \n");
+        fprintf(svgfile, "      rect.process2 { fill:rgb(180,180,180); fill-opacity:0.9; stroke-width:0;   stroke:rgb(  0,  0,  0); } \n");
+        fprintf(svgfile, "      rect.sample   { fill:rgb(  0,  0,255); fill-opacity:0.8; stroke-width:0;   stroke:rgb(  0,  0,  0); } \n");
+        fprintf(svgfile, "      rect.blocked  { fill:rgb(255,  0,  0); fill-opacity:0.5; stroke-width:0;   stroke:rgb(  0,  0,  0); } \n");
+        fprintf(svgfile, "      rect.waiting  { fill:rgb(255,255,  0); fill-opacity:0.3; stroke-width:0;   stroke:rgb(  0,  0,  0); } \n");
+        fprintf(svgfile, "      rect.cpu      { fill:rgb(192,192,192); fill-opacity:0.2; stroke-width:0.5; stroke:rgb(128,128,128); } \n");
+        fprintf(svgfile, "      rect.pstate   { fill:rgb(128,128,128); fill-opacity:0.8; stroke-width:0; } \n");
+        fprintf(svgfile, "      rect.c1       { fill:rgb(255,214,214); fill-opacity:0.5; stroke-width:0; } \n");
+        fprintf(svgfile, "      rect.c2       { fill:rgb(255,172,172); fill-opacity:0.5; stroke-width:0; } \n");
+        fprintf(svgfile, "      rect.c3       { fill:rgb(255,130,130); fill-opacity:0.5; stroke-width:0; } \n");
+        fprintf(svgfile, "      rect.c4       { fill:rgb(255, 88, 88); fill-opacity:0.5; stroke-width:0; } \n");
+        fprintf(svgfile, "      rect.c5       { fill:rgb(255, 44, 44); fill-opacity:0.5; stroke-width:0; } \n");
+        fprintf(svgfile, "      rect.c6       { fill:rgb(255,  0,  0); fill-opacity:0.5; stroke-width:0; } \n");
+        fprintf(svgfile, "      line.pstate   { stroke:rgb(255,255,  0); stroke-opacity:0.8; stroke-width:2; } \n");
+
+        fprintf(svgfile, "    ]]>\n   </style>\n</defs>\n");
+}
+
+void svg_box(int Yslot, u64 start, u64 end, const char *type)
+{
+        if (!svgfile)
+                return;
+
+        fprintf(svgfile, "<rect x=\"%4.8f\" width=\"%4.8f\" y=\"%4.1f\" height=\"%4.1f\" class=\"%s\"/>\n",
+                time2pixels(start), time2pixels(end)-time2pixels(start), Yslot * SLOT_MULT, SLOT_HEIGHT, type);
+}
+
+void svg_sample(int Yslot, int cpu, u64 start, u64 end, const char *type)
+{
+        double text_size;
+        if (!svgfile)
+                return;
+
+        fprintf(svgfile, "<rect x=\"%4.8f\" width=\"%4.8f\" y=\"%4.1f\" height=\"%4.1f\" class=\"%s\"/>\n",
+                time2pixels(start), time2pixels(end)-time2pixels(start), Yslot * SLOT_MULT, SLOT_HEIGHT, type);
+
+        text_size = (time2pixels(end)-time2pixels(start));
+        if (cpu > 9)
+                text_size = text_size/2;
+        if (text_size > 1.25)
+                text_size = 1.25;
+        if (text_size > MIN_TEXT_SIZE)
+                fprintf(svgfile, "<text transform=\"translate(%1.8f,%1.8f)\" font-size=\"%1.6fpt\">%i</text>\n",
+                        time2pixels(start), Yslot *  SLOT_MULT + SLOT_HEIGHT - 1, text_size,  cpu + 1);
+
+}
+
+static char *cpu_model(void)
+{
+        static char cpu_m[255];
+        char buf[256];
+        FILE *file;
+
+        cpu_m[0] = 0;
+        /* CPU type */
+        file = fopen("/proc/cpuinfo", "r");
+        if (file) {
+                while (fgets(buf, 255, file)) {
+                        if (strstr(buf, "model name")) {
+                                strncpy(cpu_m, &buf[13], 255);
+                                break;
+                        }
+                }
+                fclose(file);
+        }
+        return cpu_m;
+}
+
+void svg_cpu_box(int cpu, u64 __max_freq, u64 __turbo_freq)
+{
+        char cpu_string[80];
+        if (!svgfile)
+                return;
+
+        max_freq = __max_freq;
+        turbo_frequency = __turbo_freq;
+
+        fprintf(svgfile, "<rect x=\"%4.8f\" width=\"%4.8f\" y=\"%4.1f\" height=\"%4.1f\" class=\"cpu\"/>\n",
+                time2pixels(first_time),
+                time2pixels(last_time)-time2pixels(first_time),
+                cpu2y(cpu), SLOT_MULT+SLOT_HEIGHT);
+
+        sprintf(cpu_string, "CPU %i", (int)cpu+1);
+        fprintf(svgfile, "<text transform=\"translate(%4.8f,%4.8f)\">%s</text>\n",
+                10+time2pixels(first_time), cpu2y(cpu) + SLOT_HEIGHT/2, cpu_string);
+
+        fprintf(svgfile, "<text transform=\"translate(%4.8f,%4.8f)\" font-size=\"1.25pt\">%s</text>\n",
+                10+time2pixels(first_time), cpu2y(cpu) + SLOT_MULT + SLOT_HEIGHT - 4, cpu_model());
+}
+
+void svg_process(int cpu, u64 start, u64 end, const char *type, const char *name)
+{
+        double width;
+
+        if (!svgfile)
+                return;
+
+        fprintf(svgfile, "<rect x=\"%4.8f\" width=\"%4.8f\" y=\"%4.1f\" height=\"%4.1f\" class=\"%s\"/>\n",
+                time2pixels(start), time2pixels(end)-time2pixels(start), cpu2y(cpu), SLOT_MULT+SLOT_HEIGHT, type);
+        width = time2pixels(end)-time2pixels(start);
+        if (width > 6)
+                width = 6;
+
+        if (width > MIN_TEXT_SIZE)
+                fprintf(svgfile, "<text  transform=\"translate(%4.8f,%4.8f) rotate(90)\" font-size=\"%3.4fpt\">%s</text>\n",
+                        time2pixels(start), cpu2y(cpu), width, name);
+}
+
+void svg_cstate(int cpu, u64 start, u64 end, int type)
+{
+        double width;
+        char style[128];
+
+        if (!svgfile)
+                return;
+
+
+        if (type > 6)
+                type = 6;
+        sprintf(style, "c%i", type);
+
+        fprintf(svgfile, "<rect class=\"%s\" x=\"%4.8f\" width=\"%4.8f\" y=\"%4.1f\" height=\"%4.1f\"/>\n",
+                style,
+                time2pixels(start), time2pixels(end)-time2pixels(start),
+                cpu2y(cpu), SLOT_MULT+SLOT_HEIGHT);
+
+        width = time2pixels(end)-time2pixels(start);
+        if (width > 6)
+                width = 6;
+
+        if (width > MIN_TEXT_SIZE)
+                fprintf(svgfile, "<text  transform=\"translate(%4.8f,%4.8f) rotate(90)\" font-size=\"%3.4fpt\">C%i</text>\n",
+                        time2pixels(start), cpu2y(cpu), width, type);
+}
+
+static char *HzToHuman(unsigned long hz)
+{
+        static char buffer[1024];
+        unsigned long long Hz;
+
+        memset(buffer, 0, 1024);
+
+        Hz = hz;
+
+        /* default: just put the Number in */
+        sprintf(buffer, "%9lli", Hz);
+
+        if (Hz > 1000)
+                sprintf(buffer, " %6lli Mhz", (Hz+500)/1000);
+
+        if (Hz > 1500000)
+                sprintf(buffer, " %6.2f Ghz", (Hz+5000.0)/1000000);
+
+        if (Hz == turbo_frequency)
+                sprintf(buffer, "Turbo");
+
+        return buffer;
+}
+
+void svg_pstate(int cpu, u64 start, u64 end, u64 freq)
+{
+        double height = 0;
+
+        if (!svgfile)
+                return;
+
+        if (max_freq)
+                height = freq * 1.0 / max_freq * (SLOT_HEIGHT + SLOT_MULT);
+        height = 1 + cpu2y(cpu) + SLOT_MULT + SLOT_HEIGHT - height;
+        fprintf(svgfile, "<line x1=\"%4.8f\" x2=\"%4.8f\" y1=\"%4.1f\" y2=\"%4.1f\" class=\"pstate\"/>\n",
+                time2pixels(start), time2pixels(end), height, height);
+        fprintf(svgfile, "<text transform=\"translate(%4.8f,%4.8f)\" font-size=\"0.25pt\">%s</text>\n",
+                time2pixels(start), height+0.9, HzToHuman(freq));
+
+}
+
+
+void svg_partial_wakeline(u64 start, int row1, int row2)
+{
+        double height;
+
+        if (!svgfile)
+                return;
+
+
+        if (row1 < row2) {
+                if (row1)
+                        fprintf(svgfile, "<line x1=\"%4.8f\" y1=\"%4.2f\" x2=\"%4.8f\" y2=\"%4.2f\" style=\"stroke:rgb(32,255,32);stroke-width:0.009\"/>\n",
+                                time2pixels(start), row1 * SLOT_MULT + SLOT_HEIGHT,  time2pixels(start), row1 * SLOT_MULT + SLOT_HEIGHT + SLOT_MULT/32);
+
+                if (row2)
+                        fprintf(svgfile, "<line x1=\"%4.8f\" y1=\"%4.2f\" x2=\"%4.8f\" y2=\"%4.2f\" style=\"stroke:rgb(32,255,32);stroke-width:0.009\"/>\n",
+                                time2pixels(start), row2 * SLOT_MULT - SLOT_MULT/32,  time2pixels(start), row2 * SLOT_MULT);
+        } else {
+                if (row2)
+                        fprintf(svgfile, "<line x1=\"%4.8f\" y1=\"%4.2f\" x2=\"%4.8f\" y2=\"%4.2f\" style=\"stroke:rgb(32,255,32);stroke-width:0.009\"/>\n",
+                                time2pixels(start), row2 * SLOT_MULT + SLOT_HEIGHT,  time2pixels(start), row2 * SLOT_MULT + SLOT_HEIGHT + SLOT_MULT/32);
+
+                if (row1)
+                        fprintf(svgfile, "<line x1=\"%4.8f\" y1=\"%4.2f\" x2=\"%4.8f\" y2=\"%4.2f\" style=\"stroke:rgb(32,255,32);stroke-width:0.009\"/>\n",
+                                time2pixels(start), row1 * SLOT_MULT - SLOT_MULT/32,  time2pixels(start), row1 * SLOT_MULT);
+        }
+        height = row1 * SLOT_MULT;
+        if (row2 > row1)
+                height += SLOT_HEIGHT;
+        if (row1)
+                fprintf(svgfile, "<circle  cx=\"%4.8f\" cy=\"%4.2f\" r = \"0.01\"  style=\"fill:rgb(32,255,32)\"/>\n",
+                        time2pixels(start), height);
+}
+
+void svg_wakeline(u64 start, int row1, int row2)
+{
+        double height;
+
+        if (!svgfile)
+                return;
+
+
+        if (row1 < row2)
+                fprintf(svgfile, "<line x1=\"%4.8f\" y1=\"%4.2f\" x2=\"%4.8f\" y2=\"%4.2f\" style=\"stroke:rgb(32,255,32);stroke-width:0.009\"/>\n",
+                        time2pixels(start), row1 * SLOT_MULT + SLOT_HEIGHT,  time2pixels(start), row2 * SLOT_MULT);
+        else
+                fprintf(svgfile, "<line x1=\"%4.8f\" y1=\"%4.2f\" x2=\"%4.8f\" y2=\"%4.2f\" style=\"stroke:rgb(32,255,32);stroke-width:0.009\"/>\n",
+                        time2pixels(start), row2 * SLOT_MULT + SLOT_HEIGHT,  time2pixels(start), row1 * SLOT_MULT);
+
+        height = row1 * SLOT_MULT;
+        if (row2 > row1)
+                height += SLOT_HEIGHT;
+        fprintf(svgfile, "<circle  cx=\"%4.8f\" cy=\"%4.2f\" r = \"0.01\"  style=\"fill:rgb(32,255,32)\"/>\n",
+                        time2pixels(start), height);
+}
+
+void svg_interrupt(u64 start, int row)
+{
+        if (!svgfile)
+                return;
+
+        fprintf(svgfile, "<circle  cx=\"%4.8f\" cy=\"%4.2f\" r = \"0.01\"  style=\"fill:rgb(255,128,128)\"/>\n",
+                        time2pixels(start), row * SLOT_MULT);
+        fprintf(svgfile, "<circle  cx=\"%4.8f\" cy=\"%4.2f\" r = \"0.01\"  style=\"fill:rgb(255,128,128)\"/>\n",
+                        time2pixels(start), row * SLOT_MULT + SLOT_HEIGHT);
+}
+
+void svg_text(int Yslot, u64 start, const char *text)
+{
+        if (!svgfile)
+                return;
+
+        fprintf(svgfile, "<text transform=\"translate(%4.8f,%4.8f)\">%s</text>\n",
+                time2pixels(start), Yslot * SLOT_MULT+SLOT_HEIGHT/2, text);
+}
+
+static void svg_legenda_box(int X, const char *text, const char *style)
+{
+        double boxsize;
+        boxsize = SLOT_HEIGHT / 2;
+
+        fprintf(svgfile, "<rect x=\"%i\" width=\"%4.8f\" y=\"0\" height=\"%4.1f\" class=\"%s\"/>\n",
+                X, boxsize, boxsize, style);
+        fprintf(svgfile, "<text transform=\"translate(%4.8f, %4.8f)\" font-size=\"%4.4fpt\">%s</text>\n",
+                X + boxsize + 5, boxsize, 0.8 * boxsize, text);
+}
+
+void svg_legenda(void)
+{
+        if (!svgfile)
+                return;
+
+        svg_legenda_box(0,      "Running", "sample");
+        svg_legenda_box(100,    "Idle","rect.c1");
+        svg_legenda_box(200,    "Deeper Idle", "rect.c3");
+        svg_legenda_box(350,    "Deepest Idle", "rect.c6");
+        svg_legenda_box(550,    "Sleeping", "process2");
+        svg_legenda_box(650,    "Waiting for cpu", "waiting");
+        svg_legenda_box(800,    "Blocked on IO", "blocked");
+}
+
+void svg_time_grid(u64 start, u64 end)
+{
+        u64 i;
+
+        first_time = start;
+        last_time = end;
+
+        first_time = first_time / 100000000 * 100000000;
+
+        if (!svgfile)
+                return;
+
+        i = first_time;
+        while (i < last_time) {
+                int color = 220;
+                double thickness = 0.075;
+                if ((i % 100000000) == 0) {
+                        thickness = 0.5;
+                        color = 192;
+                }
+                if ((i % 1000000000) == 0) {
+                        thickness = 2.0;
+                        color = 128;
+                }
+
+                fprintf(svgfile, "<line x1=\"%4.8f\" y1=\"%4.2f\" x2=\"%4.8f\" y2=\"%llu\" style=\"stroke:rgb(%i,%i,%i);stroke-width:%1.3f\"/>\n",
+                        time2pixels(i), SLOT_MULT/2, time2pixels(i), total_height, color, color, color, thickness);
+
+                i += 10000000;
+        }
+}
+
+void svg_close(void)
+{
+        if (svgfile) {
+                fprintf(svgfile, "</svg>\n");
+                fclose(svgfile);
+                svgfile = NULL;
+        }
+}
diff --git a/tools/perf/util/svghelper.h b/tools/perf/util/svghelper.h
new file mode 100644
index 000000000000..ad79b5dc53de
--- /dev/null
+++ b/tools/perf/util/svghelper.h
@@ -0,0 +1,25 @@
+#ifndef _INCLUDE_GUARD_SVG_HELPER_
+#define _INCLUDE_GUARD_SVG_HELPER_
+
+#include "types.h"
+
+extern void open_svg(const char *filename, int cpus, int rows);
+extern void svg_box(int Yslot, u64 start, u64 end, const char *type);
+extern void svg_sample(int Yslot, int cpu, u64 start, u64 end, const char *type);
+extern void svg_cpu_box(int cpu, u64 max_frequency, u64 turbo_frequency);
+
+
+extern void svg_process(int cpu, u64 start, u64 end, const char *type, const char *name);
+extern void svg_cstate(int cpu, u64 start, u64 end, int type);
+extern void svg_pstate(int cpu, u64 start, u64 end, u64 freq);
+
+
+extern void svg_time_grid(u64 start, u64 end);
+extern void svg_legenda(void);
+extern void svg_wakeline(u64 start, int row1, int row2);
+extern void svg_partial_wakeline(u64 start, int row1, int row2);
+extern void svg_interrupt(u64 start, int row);
+extern void svg_text(int Yslot, u64 start, const char *text);
+extern void svg_close(void);
+
+#endif
diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c
index 7635928ca278..45efb5db0d19 100644
--- a/tools/perf/util/thread.c
+++ b/tools/perf/util/thread.c
@@ -8,7 +8,7 @@
 
 static struct thread *thread__new(pid_t pid)
 {
-        struct thread *self = malloc(sizeof(*self));
+        struct thread *self = calloc(1, sizeof(*self));
 
         if (self != NULL) {
                 self->pid = pid;
@@ -85,7 +85,7 @@ register_idle_thread(struct rb_root *threads, struct thread **last_match)
 {
         struct thread *thread = threads__findnew(0, threads, last_match);
 
-        if (!thread || thread__set_comm(thread, "[init]")) {
+        if (!thread || thread__set_comm(thread, "swapper")) {
                 fprintf(stderr, "problem inserting idle task.\n");
                 exit(-1);
         }
diff --git a/tools/perf/util/thread.h b/tools/perf/util/thread.h
index 634f2809a342..32aea3c1c2ad 100644
--- a/tools/perf/util/thread.h
+++ b/tools/perf/util/thread.h
@@ -4,10 +4,11 @@
 #include "symbol.h"
 
 struct thread {
-        struct rb_node   rb_node;
-        struct list_head maps;
-        pid_t            pid;
-        char             *comm;
+        struct rb_node          rb_node;
+        struct list_head        maps;
+        pid_t                   pid;
+        char                    shortname[3];
+        char                    *comm;
 };
 
 int thread__set_comm(struct thread *self, const char *comm);
diff --git a/tools/perf/util/trace-event-info.c b/tools/perf/util/trace-event-info.c
index 6c9302a7274c..1fd824c1f1c4 100644
--- a/tools/perf/util/trace-event-info.c
+++ b/tools/perf/util/trace-event-info.c
@@ -458,7 +458,7 @@ static void read_proc_kallsyms(void)
 static void read_ftrace_printk(void)
 {
         unsigned int size, check_size;
-        const char *path;
+        char *path;
         struct stat st;
         int ret;
 
@@ -468,14 +468,15 @@ static void read_ftrace_printk(void)
                 /* not found */
                 size = 0;
                 write_or_die(&size, 4);
-                return;
+                goto out;
         }
         size = get_size(path);
         write_or_die(&size, 4);
         check_size = copy_file(path);
         if (size != check_size)
                 die("error in size of file '%s'", path);
-
+out:
+        put_tracing_file(path);
 }
 
 static struct tracepoint_path *
diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index 629e602d9405..f6a8437141c8 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -1776,6 +1776,29 @@ static unsigned long long read_size(void *ptr, int size)
         }
 }
 
+unsigned long long
+raw_field_value(struct event *event, const char *name, void *data)
+{
+        struct format_field *field;
+
+        field = find_any_field(event, name);
+        if (!field)
+                return 0ULL;
+
+        return read_size(data + field->offset, field->size);
+}
+
+void *raw_field_ptr(struct event *event, const char *name, void *data)
+{
+        struct format_field *field;
+
+        field = find_any_field(event, name);
+        if (!field)
+                return NULL;
+
+        return data + field->offset;
+}
+
 static int get_common_info(const char *type, int *offset, int *size)
 {
         struct event *event;
@@ -1799,7 +1822,7 @@ static int get_common_info(const char *type, int *offset, int *size)
         return 0;
 }
 
-static int parse_common_type(void *data)
+int trace_parse_common_type(void *data)
 {
         static int type_offset;
         static int type_size;
@@ -1832,7 +1855,7 @@ static int parse_common_pid(void *data)
         return read_size(data + pid_offset, pid_size);
 }
 
-static struct event *find_event(int id)
+struct event *trace_find_event(int id)
 {
         struct event *event;
 
@@ -2420,8 +2443,8 @@ get_return_for_leaf(int cpu, int cur_pid, unsigned long long cur_func,
         int type;
         int pid;
 
-        type = parse_common_type(next->data);
-        event = find_event(type);
+        type = trace_parse_common_type(next->data);
+        event = trace_find_event(type);
         if (!event)
                 return NULL;
 
@@ -2502,8 +2525,8 @@ print_graph_entry_leaf(struct event *event, void *data, struct record *ret_rec)
         int type;
         int i;
 
-        type = parse_common_type(ret_rec->data);
-        ret_event = find_event(type);
+        type = trace_parse_common_type(ret_rec->data);
+        ret_event = trace_find_event(type);
 
         field = find_field(ret_event, "rettime");
         if (!field)
@@ -2696,11 +2719,13 @@ void print_event(int cpu, void *data, int size, unsigned long long nsecs,
         nsecs -= secs * NSECS_PER_SEC;
         usecs = nsecs / NSECS_PER_USEC;
 
-        type = parse_common_type(data);
+        type = trace_parse_common_type(data);
 
-        event = find_event(type);
-        if (!event)
-                die("ug! no event found for type %d", type);
+        event = trace_find_event(type);
+        if (!event) {
+                printf("ug! no event found for type %d\n", type);
+                return;
+        }
 
         pid = parse_common_pid(data);
 
diff --git a/tools/perf/util/trace-event-read.c b/tools/perf/util/trace-event-read.c
index a1217a10632f..1b5c847d2c22 100644
--- a/tools/perf/util/trace-event-read.c
+++ b/tools/perf/util/trace-event-read.c
@@ -458,12 +458,13 @@ struct record *trace_read_data(int cpu)
         return data;
 }
 
-void trace_report (void)
+void trace_report(void)
 {
         const char *input_file = "trace.info";
         char buf[BUFSIZ];
         char test[] = { 23, 8, 68 };
         char *version;
+        int show_version = 0;
         int show_funcs = 0;
         int show_printk = 0;
 
@@ -480,7 +481,8 @@ void trace_report (void)
                 die("not a trace file (missing tracing)");
 
         version = read_string();
-        printf("version = %s\n", version);
+        if (show_version)
+                printf("version = %s\n", version);
         free(version);
 
         read_or_die(buf, 1);
diff --git a/tools/perf/util/trace-event.h b/tools/perf/util/trace-event.h
index 420294a5773e..d35ebf1e29ff 100644
--- a/tools/perf/util/trace-event.h
+++ b/tools/perf/util/trace-event.h
@@ -234,6 +234,11 @@ extern int header_page_data_offset;
 extern int header_page_data_size;
 
 int parse_header_page(char *buf, unsigned long size);
+int trace_parse_common_type(void *data);
+struct event *trace_find_event(int id);
+unsigned long long
+raw_field_value(struct event *event, const char *name, void *data);
+void *raw_field_ptr(struct event *event, const char *name, void *data);
 
 void read_tracing_data(struct perf_counter_attr *pattrs, int nb_counters);