15 files changed, 50 insertions, 37 deletions

diff --git a/arch/mips/bcm47xx/prom.c b/arch/mips/bcm47xx/prom.c
index c51405e57921..29d3cbf9555f 100644
--- a/arch/mips/bcm47xx/prom.c
+++ b/arch/mips/bcm47xx/prom.c
@@ -141,6 +141,14 @@ static __init void prom_init_mem(void)
                         break;
         }
 
+        /* Ignoring the last page when ddr size is 128M. Cached
+         * accesses to last page is causing the processor to prefetch
+         * using address above 128M stepping out of the ddr address
+         * space.
+         */
+        if (mem == 0x8000000)
+                mem -= 0x1000;
+
         add_memory_region(0, mem, BOOT_MEM_RAM);
 }
 
diff --git a/arch/mips/mm/highmem.c b/arch/mips/mm/highmem.c
index e274fda329f4..127d732474bf 100644
--- a/arch/mips/mm/highmem.c
+++ b/arch/mips/mm/highmem.c
@@ -1,5 +1,6 @@
 #include <linux/module.h>
 #include <linux/highmem.h>
+#include <linux/sched.h>
 #include <linux/smp.h>
 #include <asm/fixmap.h>
 #include <asm/tlbflush.h>
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
index 524d9352f17e..f388dc68f605 100644
--- a/arch/parisc/Kconfig
+++ b/arch/parisc/Kconfig
@@ -18,7 +18,6 @@ config PARISC
         select BUG
         select HAVE_PERF_EVENTS
         select GENERIC_ATOMIC64 if !64BIT
-        select HAVE_ARCH_TRACEHOOK
         help
           The PA-RISC microprocessor is designed by Hewlett-Packard and used
           in many of their workstations & servers (HP9000 700 and 800 series,
diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h
index fc801bab1b3b..b753ea59703a 100644
--- a/arch/x86/include/asm/processor.h
+++ b/arch/x86/include/asm/processor.h
@@ -450,6 +450,8 @@ struct thread_struct {
         struct perf_event       *ptrace_bps[HBP_NUM];
         /* Debug status used for traps, single steps, etc... */
         unsigned long           debugreg6;
+        /* Keep track of the exact dr7 value set by the user */
+        unsigned long           ptrace_dr7;
         /* Fault info: */
         unsigned long           cr2;
         unsigned long           trap_no;
diff --git a/arch/x86/kernel/hw_breakpoint.c b/arch/x86/kernel/hw_breakpoint.c
index 05d5fec64a94..bb6006e3e295 100644
--- a/arch/x86/kernel/hw_breakpoint.c
+++ b/arch/x86/kernel/hw_breakpoint.c
@@ -212,25 +212,6 @@ static int arch_check_va_in_kernelspace(unsigned long va, u8 hbp_len)
         return (va >= TASK_SIZE) && ((va + len - 1) >= TASK_SIZE);
 }
 
-/*
- * Store a breakpoint's encoded address, length, and type.
- */
-static int arch_store_info(struct perf_event *bp)
-{
-        struct arch_hw_breakpoint *info = counter_arch_bp(bp);
-        /*
-         * For kernel-addresses, either the address or symbol name can be
-         * specified.
-         */
-        if (info->name)
-                info->address = (unsigned long)
-                                kallsyms_lookup_name(info->name);
-        if (info->address)
-                return 0;
-
-        return -EINVAL;
-}
-
 int arch_bp_generic_fields(int x86_len, int x86_type,
                            int *gen_len, int *gen_type)
 {
@@ -362,10 +343,13 @@ int arch_validate_hwbkpt_settings(struct perf_event *bp,
                 return ret;
         }
 
-        ret = arch_store_info(bp);
-
-        if (ret < 0)
-                return ret;
+        /*
+         * For kernel-addresses, either the address or symbol name can be
+         * specified.
+         */
+        if (info->name)
+                info->address = (unsigned long)
+                                kallsyms_lookup_name(info->name);
         /*
          * Check that the low-order bits of the address are appropriate
          * for the alignment implied by len.
diff --git a/arch/x86/kernel/ptrace.c b/arch/x86/kernel/ptrace.c
index 017d937639fe..0c1033d61e59 100644
--- a/arch/x86/kernel/ptrace.c
+++ b/arch/x86/kernel/ptrace.c
@@ -702,7 +702,7 @@ static unsigned long ptrace_get_debugreg(struct task_struct *tsk, int n)
         } else if (n == 6) {
                 val = thread->debugreg6;
          } else if (n == 7) {
-                val = ptrace_get_dr7(thread->ptrace_bps);
+                val = thread->ptrace_dr7;
         }
         return val;
 }
@@ -778,8 +778,11 @@ int ptrace_set_debugreg(struct task_struct *tsk, int n, unsigned long val)
                         return rc;
         }
         /* All that's left is DR7 */
-        if (n == 7)
+        if (n == 7) {
                 rc = ptrace_write_dr7(tsk, val);
+                if (!rc)
+                        thread->ptrace_dr7 = val;
+        }
 
 ret_path:
         return rc;
diff --git a/drivers/clocksource/cs5535-clockevt.c b/drivers/clocksource/cs5535-clockevt.c
index 27d20fac19d1..b314a999aabe 100644
--- a/drivers/clocksource/cs5535-clockevt.c
+++ b/drivers/clocksource/cs5535-clockevt.c
@@ -21,7 +21,7 @@
 
 #define DRV_NAME "cs5535-clockevt"
 
-static int timer_irq = CONFIG_CS5535_MFGPT_DEFAULT_IRQ;
+static int timer_irq;
 module_param_named(irq, timer_irq, int, 0644);
 MODULE_PARM_DESC(irq, "Which IRQ to use for the clock source MFGPT ticks.");
 
diff --git a/drivers/platform/x86/acer-wmi.c b/drivers/platform/x86/acer-wmi.c
index 07d14dfdf0b4..226b3e93498c 100644
--- a/drivers/platform/x86/acer-wmi.c
+++ b/drivers/platform/x86/acer-wmi.c
@@ -934,7 +934,7 @@ static int __devinit acer_backlight_init(struct device *dev)
         acer_backlight_device = bd;
 
         bd->props.power = FB_BLANK_UNBLANK;
-        bd->props.brightness = max_brightness;
+        bd->props.brightness = read_brightness(bd);
         bd->props.max_brightness = max_brightness;
         backlight_update_status(bd);
         return 0;
diff --git a/drivers/video/efifb.c b/drivers/video/efifb.c
index eb12182b2059..d25df51bb0d2 100644
--- a/drivers/video/efifb.c
+++ b/drivers/video/efifb.c
@@ -161,8 +161,17 @@ static int efifb_setcolreg(unsigned regno, unsigned red, unsigned green,
         return 0;
 }
 
+static void efifb_destroy(struct fb_info *info)
+{
+        if (info->screen_base)
+                iounmap(info->screen_base);
+        release_mem_region(info->aperture_base, info->aperture_size);
+        framebuffer_release(info);
+}
+
 static struct fb_ops efifb_ops = {
         .owner          = THIS_MODULE,
+        .fb_destroy     = efifb_destroy,
         .fb_setcolreg   = efifb_setcolreg,
         .fb_fillrect    = cfb_fillrect,
         .fb_copyarea    = cfb_copyarea,
@@ -281,7 +290,7 @@ static int __init efifb_probe(struct platform_device *dev)
         info->par = NULL;
 
         info->aperture_base = efifb_fix.smem_start;
-        info->aperture_size = size_total;
+        info->aperture_size = size_remap;
 
         info->screen_base = ioremap(efifb_fix.smem_start, efifb_fix.smem_len);
         if (!info->screen_base) {
diff --git a/fs/exec.c b/fs/exec.c
index e95c692ef0e4..cce6bbdbdbb1 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -637,7 +637,6 @@ int setup_arg_pages(struct linux_binprm *bprm,
          * will align it up.
          */
         rlim_stack = rlimit(RLIMIT_STACK) & PAGE_MASK;
-        rlim_stack = min(rlim_stack, stack_size);
 #ifdef CONFIG_STACK_GROWSUP
         if (stack_size + stack_expand > rlim_stack)
                 stack_base = vma->vm_start + rlim_stack;
diff --git a/kernel/perf_event.c b/kernel/perf_event.c
index 2b19297742cb..2ae7409bf38f 100644
--- a/kernel/perf_event.c
+++ b/kernel/perf_event.c
@@ -3259,8 +3259,6 @@ static void perf_event_task_output(struct perf_event *event,
         task_event->event_id.tid = perf_event_tid(event, task);
         task_event->event_id.ptid = perf_event_tid(event, current);
 
-        task_event->event_id.time = perf_clock();
-
         perf_output_put(&handle, task_event->event_id);
 
         perf_output_end(&handle);
@@ -3268,7 +3266,7 @@ static void perf_event_task_output(struct perf_event *event,
 
 static int perf_event_task_match(struct perf_event *event)
 {
-        if (event->state != PERF_EVENT_STATE_ACTIVE)
+        if (event->state < PERF_EVENT_STATE_INACTIVE)
                 return 0;
 
         if (event->cpu != -1 && event->cpu != smp_processor_id())
@@ -3300,7 +3298,7 @@ static void perf_event_task_event(struct perf_task_event *task_event)
         cpuctx = &get_cpu_var(perf_cpu_context);
         perf_event_task_ctx(&cpuctx->ctx, task_event);
         if (!ctx)
-                ctx = rcu_dereference(task_event->task->perf_event_ctxp);
+                ctx = rcu_dereference(current->perf_event_ctxp);
         if (ctx)
                 perf_event_task_ctx(ctx, task_event);
         put_cpu_var(perf_cpu_context);
@@ -3331,6 +3329,7 @@ static void perf_event_task(struct task_struct *task,
                         /* .ppid */
                         /* .tid  */
                         /* .ptid */
+                        .time = perf_clock(),
                 },
         };
 
@@ -3380,7 +3379,7 @@ static void perf_event_comm_output(struct perf_event *event,
 
 static int perf_event_comm_match(struct perf_event *event)
 {
-        if (event->state != PERF_EVENT_STATE_ACTIVE)
+        if (event->state < PERF_EVENT_STATE_INACTIVE)
                 return 0;
 
         if (event->cpu != -1 && event->cpu != smp_processor_id())
@@ -3500,7 +3499,7 @@ static void perf_event_mmap_output(struct perf_event *event,
 static int perf_event_mmap_match(struct perf_event *event,
                                    struct perf_mmap_event *mmap_event)
 {
-        if (event->state != PERF_EVENT_STATE_ACTIVE)
+        if (event->state < PERF_EVENT_STATE_INACTIVE)
                 return 0;
 
         if (event->cpu != -1 && event->cpu != smp_processor_id())
diff --git a/kernel/sys.c b/kernel/sys.c
index 26a6b73a6b85..18bde979f346 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -222,6 +222,7 @@ SYSCALL_DEFINE2(getpriority, int, which, int, who)
         if (which > PRIO_USER || which < PRIO_PROCESS)
                 return -EINVAL;
 
+        rcu_read_lock();
         read_lock(&tasklist_lock);
         switch (which) {
                 case PRIO_PROCESS:
@@ -267,6 +268,7 @@ SYSCALL_DEFINE2(getpriority, int, which, int, who)
         }
 out_unlock:
         read_unlock(&tasklist_lock);
+        rcu_read_unlock();
 
         return retval;
 }
diff --git a/lib/idr.c b/lib/idr.c
index 1cac726c44bc..0dc782216d4b 100644
--- a/lib/idr.c
+++ b/lib/idr.c
@@ -156,10 +156,12 @@ static int sub_alloc(struct idr *idp, int *starting_id, struct idr_layer **pa)
                         id = (id | ((1 << (IDR_BITS * l)) - 1)) + 1;
 
                         /* if already at the top layer, we need to grow */
-                        if (!(p = pa[l])) {
+                        if (id >= 1 << (idp->layers * IDR_BITS)) {
                                 *starting_id = id;
                                 return IDR_NEED_TO_GROW;
                         }
+                        p = pa[l];
+                        BUG_ON(!p);
 
                         /* If we need to go up one layer, continue the
                          * loop; otherwise, restart from the top.
diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index f52481b1c1e5..237050478f28 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -459,6 +459,8 @@ static int oom_kill_process(struct task_struct *p, gfp_t gfp_mask, int order,
         list_for_each_entry(c, &p->children, sibling) {
                 if (c->mm == p->mm)
                         continue;
+                if (mem && !task_in_mem_cgroup(c, mem))
+                        continue;
                 if (!oom_kill_task(c))
                         return 0;
         }
diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c
index 29465d440043..fde17b090a47 100644
--- a/tools/perf/util/probe-event.c
+++ b/tools/perf/util/probe-event.c
@@ -272,6 +272,7 @@ int synthesize_perf_probe_point(struct probe_point *pp)
         int ret;
 
         pp->probes[0] = buf = zalloc(MAX_CMDLEN);
+        pp->found = 1;
         if (!buf)
                 die("Failed to allocate memory by zalloc.");
         if (pp->offset) {
@@ -294,6 +295,7 @@ int synthesize_perf_probe_point(struct probe_point *pp)
 error:
                 free(pp->probes[0]);
                 pp->probes[0] = NULL;
+                pp->found = 0;
         }
         return ret;
 }
@@ -455,6 +457,7 @@ void show_perf_probe_events(void)
         struct strlist *rawlist;
         struct str_node *ent;
 
+        memset(&pp, 0, sizeof(pp));
         fd = open_kprobe_events(O_RDONLY, 0);
         rawlist = get_trace_kprobe_event_rawlist(fd);
         close(fd);