1 files changed, 138 insertions, 45 deletions

diff --git a/include/linux/perf_counter.h b/include/linux/perf_counter.h
index 1b3118a1023a..9ba1822272c7 100644
--- a/include/linux/perf_counter.h
+++ b/include/linux/perf_counter.h
@@ -115,26 +115,44 @@ enum perf_counter_sample_format {
         PERF_SAMPLE_TID                         = 1U << 1,
         PERF_SAMPLE_TIME                        = 1U << 2,
         PERF_SAMPLE_ADDR                        = 1U << 3,
-        PERF_SAMPLE_GROUP                       = 1U << 4,
+        PERF_SAMPLE_READ                        = 1U << 4,
         PERF_SAMPLE_CALLCHAIN                   = 1U << 5,
         PERF_SAMPLE_ID                          = 1U << 6,
         PERF_SAMPLE_CPU                         = 1U << 7,
         PERF_SAMPLE_PERIOD                      = 1U << 8,
+        PERF_SAMPLE_STREAM_ID                   = 1U << 9,
+        PERF_SAMPLE_RAW                         = 1U << 10,
 
-        PERF_SAMPLE_MAX = 1U << 9,              /* non-ABI */
+        PERF_SAMPLE_MAX = 1U << 11,             /* non-ABI */
 };
 
 /*
- * Bits that can be set in attr.read_format to request that
- * reads on the counter should return the indicated quantities,
- * in increasing order of bit value, after the counter value.
+ * The format of the data returned by read() on a perf counter fd,
+ * as specified by attr.read_format:
+ *
+ * struct read_format {
+ *      { u64           value;
+ *        { u64         time_enabled; } && PERF_FORMAT_ENABLED
+ *        { u64         time_running; } && PERF_FORMAT_RUNNING
+ *        { u64         id;           } && PERF_FORMAT_ID
+ *      } && !PERF_FORMAT_GROUP
+ *
+ *      { u64           nr;
+ *        { u64         time_enabled; } && PERF_FORMAT_ENABLED
+ *        { u64         time_running; } && PERF_FORMAT_RUNNING
+ *        { u64         value;
+ *          { u64       id;           } && PERF_FORMAT_ID
+ *        }             cntr[nr];
+ *      } && PERF_FORMAT_GROUP
+ * };
  */
 enum perf_counter_read_format {
         PERF_FORMAT_TOTAL_TIME_ENABLED          = 1U << 0,
         PERF_FORMAT_TOTAL_TIME_RUNNING          = 1U << 1,
         PERF_FORMAT_ID                          = 1U << 2,
+        PERF_FORMAT_GROUP                       = 1U << 3,
 
-        PERF_FORMAT_MAX = 1U << 3,              /* non-ABI */
+        PERF_FORMAT_MAX = 1U << 4,              /* non-ABI */
 };
 
 #define PERF_ATTR_SIZE_VER0     64      /* sizeof first published struct */
@@ -178,8 +196,11 @@ struct perf_counter_attr {
                                 mmap           :  1, /* include mmap data     */
                                 comm           :  1, /* include comm data     */
                                 freq           :  1, /* use freq, not period  */
+                                inherit_stat   :  1, /* per task counts       */
+                                enable_on_exec :  1, /* next exec enables     */
+                                task           :  1, /* trace fork/exit       */
 
-                                __reserved_1   : 53;
+                                __reserved_1   : 50;
 
         __u32                   wakeup_events;  /* wakeup every n events */
         __u32                   __reserved_2;
@@ -232,14 +253,28 @@ struct perf_counter_mmap_page {
         __u32   lock;                   /* seqlock for synchronization */
         __u32   index;                  /* hardware counter identifier */
         __s64   offset;                 /* add to hardware counter value */
+        __u64   time_enabled;           /* time counter active */
+        __u64   time_running;           /* time counter on cpu */
+
+                /*
+                 * Hole for extension of the self monitor capabilities
+                 */
+
+        __u64   __reserved[123];        /* align to 1k */
 
         /*
          * Control data for the mmap() data buffer.
          *
-         * User-space reading this value should issue an rmb(), on SMP capable
-         * platforms, after reading this value -- see perf_counter_wakeup().
+         * User-space reading the @data_head value should issue an rmb(), on
+         * SMP capable platforms, after reading this value -- see
+         * perf_counter_wakeup().
+         *
+         * When the mapping is PROT_WRITE the @data_tail value should be
+         * written by userspace to reflect the last read data. In this case
+         * the kernel will not over-write unread data.
          */
         __u64   data_head;              /* head in the data section */
+        __u64   data_tail;              /* user-space written tail */
 };
 
 #define PERF_EVENT_MISC_CPUMODE_MASK            (3 << 0)
@@ -247,7 +282,6 @@ struct perf_counter_mmap_page {
 #define PERF_EVENT_MISC_KERNEL                  (1 << 0)
 #define PERF_EVENT_MISC_USER                    (2 << 0)
 #define PERF_EVENT_MISC_HYPERVISOR              (3 << 0)
-#define PERF_EVENT_MISC_OVERFLOW                (1 << 2)
 
 struct perf_event_header {
         __u32   type;
@@ -275,6 +309,15 @@ enum perf_event_type {
 
         /*
          * struct {
+         *      struct perf_event_header        header;
+         *      u64                             id;
+         *      u64                             lost;
+         * };
+         */
+        PERF_EVENT_LOST                 = 2,
+
+        /*
+         * struct {
          *      struct perf_event_header        header;
          *
          *      u32                             pid, tid;
@@ -286,18 +329,18 @@ enum perf_event_type {
         /*
          * struct {
          *      struct perf_event_header        header;
-         *      u64                             time;
-         *      u64                             id;
-         *      u64                             sample_period;
+         *      u32                             pid, ppid;
+         *      u32                             tid, ptid;
          * };
          */
-        PERF_EVENT_PERIOD               = 4,
+        PERF_EVENT_EXIT                 = 4,
 
         /*
          * struct {
          *      struct perf_event_header        header;
          *      u64                             time;
          *      u64                             id;
+         *      u64                             stream_id;
          * };
          */
         PERF_EVENT_THROTTLE             = 5,
@@ -307,34 +350,69 @@ enum perf_event_type {
          * struct {
          *      struct perf_event_header        header;
          *      u32                             pid, ppid;
+         *      u32                             tid, ptid;
          * };
          */
         PERF_EVENT_FORK                 = 7,
 
         /*
-         * When header.misc & PERF_EVENT_MISC_OVERFLOW the event_type field
-         * will be PERF_RECORD_*
+         * struct {
+         *      struct perf_event_header        header;
+         *      u32                             pid, tid;
          *
+         *      struct read_format              values;
+         * };
+         */
+        PERF_EVENT_READ                 = 8,
+
+        /*
          * struct {
          *      struct perf_event_header        header;
          *
-         *      { u64                   ip;       } && PERF_RECORD_IP
-         *      { u32                   pid, tid; } && PERF_RECORD_TID
-         *      { u64                   time;     } && PERF_RECORD_TIME
-         *      { u64                   addr;     } && PERF_RECORD_ADDR
-         *      { u64                   config;   } && PERF_RECORD_CONFIG
-         *      { u32                   cpu, res; } && PERF_RECORD_CPU
+         *      { u64                   ip;       } && PERF_SAMPLE_IP
+         *      { u32                   pid, tid; } && PERF_SAMPLE_TID
+         *      { u64                   time;     } && PERF_SAMPLE_TIME
+         *      { u64                   addr;     } && PERF_SAMPLE_ADDR
+         *      { u64                   id;       } && PERF_SAMPLE_ID
+         *      { u64                   stream_id;} && PERF_SAMPLE_STREAM_ID
+         *      { u32                   cpu, res; } && PERF_SAMPLE_CPU
+         *      { u64                   period;   } && PERF_SAMPLE_PERIOD
+         *
+         *      { struct read_format    values;   } && PERF_SAMPLE_READ
          *
-         *      { u64                   nr;
-         *        { u64 id, val; }      cnt[nr];  } && PERF_RECORD_GROUP
+         *      { u64                   nr,
+         *        u64                   ips[nr];  } && PERF_SAMPLE_CALLCHAIN
          *
-         *      { u16                   nr,
-         *                              hv,
-         *                              kernel,
-         *                              user;
-         *        u64                   ips[nr];  } && PERF_RECORD_CALLCHAIN
+         *      #
+         *      # The RAW record below is opaque data wrt the ABI
+         *      #
+         *      # That is, the ABI doesn't make any promises wrt to
+         *      # the stability of its content, it may vary depending
+         *      # on event, hardware, kernel version and phase of
+         *      # the moon.
+         *      #
+         *      # In other words, PERF_SAMPLE_RAW contents are not an ABI.
+         *      #
+         *
+         *      { u32                   size;
+         *        char                  data[size];}&& PERF_SAMPLE_RAW
          * };
          */
+        PERF_EVENT_SAMPLE               = 9,
+
+        PERF_EVENT_MAX,                 /* non-ABI */
+};
+
+enum perf_callchain_context {
+        PERF_CONTEXT_HV                 = (__u64)-32,
+        PERF_CONTEXT_KERNEL             = (__u64)-128,
+        PERF_CONTEXT_USER               = (__u64)-512,
+
+        PERF_CONTEXT_GUEST              = (__u64)-2048,
+        PERF_CONTEXT_GUEST_KERNEL       = (__u64)-2176,
+        PERF_CONTEXT_GUEST_USER         = (__u64)-2560,
+
+        PERF_CONTEXT_MAX                = (__u64)-4095,
 };
 
 #ifdef __KERNEL__
@@ -356,6 +434,18 @@ enum perf_event_type {
 #include <linux/pid_namespace.h>
 #include <asm/atomic.h>
 
+#define PERF_MAX_STACK_DEPTH            255
+
+struct perf_callchain_entry {
+        __u64                           nr;
+        __u64                           ip[PERF_MAX_STACK_DEPTH];
+};
+
+struct perf_raw_record {
+        u32                             size;
+        void                            *data;
+};
+
 struct task_struct;
 
 /**
@@ -414,6 +504,7 @@ struct file;
 struct perf_mmap_data {
         struct rcu_head                 rcu_head;
         int                             nr_pages;       /* nr of data pages  */
+        int                             writable;       /* are we writable   */
         int                             nr_locked;      /* nr pages mlocked  */
 
         atomic_t                        poll;           /* POLL_ for wakeups */
@@ -423,8 +514,8 @@ struct perf_mmap_data {
         atomic_long_t                   done_head;      /* completed head    */
 
         atomic_t                        lock;           /* concurrent writes */
-
         atomic_t                        wakeup;         /* needs a wakeup    */
+        atomic_t                        lost;           /* nr records lost   */
 
         struct perf_counter_mmap_page   *user_page;
         void                            *data_pages[0];
@@ -550,6 +641,7 @@ struct perf_counter_context {
         int                             nr_counters;
         int                             nr_active;
         int                             is_active;
+        int                             nr_stat;
         atomic_t                        refcount;
         struct task_struct              *task;
 
@@ -604,6 +696,7 @@ extern void perf_counter_task_tick(struct task_struct *task, int cpu);
 extern int perf_counter_init_task(struct task_struct *child);
 extern void perf_counter_exit_task(struct task_struct *child);
 extern void perf_counter_free_task(struct task_struct *task);
+extern void set_perf_counter_pending(void);
 extern void perf_counter_do_pending(void);
 extern void perf_counter_print_debug(void);
 extern void __perf_disable(void);
@@ -621,10 +714,13 @@ struct perf_sample_data {
         struct pt_regs                  *regs;
         u64                             addr;
         u64                             period;
+        struct perf_raw_record          *raw;
 };
 
 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);
 
 /*
  * Return 1 for a software counter, 0 for a hardware counter
@@ -636,7 +732,16 @@ static inline int is_software_counter(struct perf_counter *counter)
                 (counter->attr.type != PERF_TYPE_HW_CACHE);
 }
 
-extern void perf_swcounter_event(u32, u64, int, struct pt_regs *, u64);
+extern atomic_t perf_swcounter_enabled[PERF_COUNT_SW_MAX];
+
+extern void __perf_swcounter_event(u32, u64, int, struct pt_regs *, u64);
+
+static inline void
+perf_swcounter_event(u32 event, u64 nr, int nmi, struct pt_regs *regs, u64 addr)
+{
+        if (atomic_read(&perf_swcounter_enabled[event]))
+                __perf_swcounter_event(event, nr, nmi, regs, addr);
+}
 
 extern void __perf_counter_mmap(struct vm_area_struct *vma);
 
@@ -649,18 +754,6 @@ static inline void perf_counter_mmap(struct vm_area_struct *vma)
 extern void perf_counter_comm(struct task_struct *tsk);
 extern void perf_counter_fork(struct task_struct *tsk);
 
-extern void perf_counter_task_migration(struct task_struct *task, int cpu);
-
-#define MAX_STACK_DEPTH                 255
-
-struct perf_callchain_entry {
-        u16                             nr;
-        u16                             hv;
-        u16                             kernel;
-        u16                             user;
-        u64                             ip[MAX_STACK_DEPTH];
-};
-
 extern struct perf_callchain_entry *perf_callchain(struct pt_regs *regs);
 
 extern int sysctl_perf_counter_paranoid;
@@ -668,6 +761,8 @@ extern int sysctl_perf_counter_mlock;
 extern int sysctl_perf_counter_sample_rate;
 
 extern void perf_counter_init(void);
+extern void perf_tpcounter_event(int event_id, u64 addr, u64 count,
+                                 void *record, int entry_size);
 
 #ifndef perf_misc_flags
 #define perf_misc_flags(regs)   (user_mode(regs) ? PERF_EVENT_MISC_USER : \
@@ -701,8 +796,6 @@ 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 void perf_counter_task_migration(struct task_struct *task,
-                                               int cpu)                 { }
 #endif
 
 #endif /* __KERNEL__ */