perf report: Add --hide-unresolved/-U command line option

[pandora-kernel.git] / kernel / perf_event.c

diff --git a/kernel/perf_event.c b/kernel/perf_event.c
index 9052d6c..5b987b4 100644 (file)
--- a/kernel/perf_event.c
+++ b/kernel/perf_event.c
@@ -782,6 +782,9 @@ static void __perf_install_in_context(void *info)
 
        add_event_to_ctx(event, ctx);
 
+       if (event->cpu != -1 && event->cpu != smp_processor_id())
+               goto unlock;
+
        /*
         * Don't put the event on if it is disabled or if
         * it is in a group and the group isn't on.
@@ -925,6 +928,9 @@ static void __perf_event_enable(void *info)
                goto unlock;
        __perf_event_mark_enabled(event, ctx);
 
+       if (event->cpu != -1 && event->cpu != smp_processor_id())
+               goto unlock;
+
        /*
         * If the event is in a group and isn't the group leader,
         * then don't put it on unless the group is on.
@@ -1164,9 +1170,9 @@ static void perf_event_sync_stat(struct perf_event_context *ctx,
  * not restart the event.
  */
 void perf_event_task_sched_out(struct task_struct *task,
-                                struct task_struct *next, int cpu)
+                                struct task_struct *next)
 {
-       struct perf_cpu_context *cpuctx = &per_cpu(perf_cpu_context, cpu);
+       struct perf_cpu_context *cpuctx = &__get_cpu_var(perf_cpu_context);
        struct perf_event_context *ctx = task->perf_event_ctxp;
        struct perf_event_context *next_ctx;
        struct perf_event_context *parent;
@@ -1246,8 +1252,9 @@ static void perf_event_cpu_sched_out(struct perf_cpu_context *cpuctx)
 
 static void
 __perf_event_sched_in(struct perf_event_context *ctx,
-                       struct perf_cpu_context *cpuctx, int cpu)
+                       struct perf_cpu_context *cpuctx)
 {
+       int cpu = smp_processor_id();
        struct perf_event *event;
        int can_add_hw = 1;
 
@@ -1320,24 +1327,24 @@ __perf_event_sched_in(struct perf_event_context *ctx,
  * accessing the event control register. If a NMI hits, then it will
  * keep the event running.
  */
-void perf_event_task_sched_in(struct task_struct *task, int cpu)
+void perf_event_task_sched_in(struct task_struct *task)
 {
-       struct perf_cpu_context *cpuctx = &per_cpu(perf_cpu_context, cpu);
+       struct perf_cpu_context *cpuctx = &__get_cpu_var(perf_cpu_context);
        struct perf_event_context *ctx = task->perf_event_ctxp;
 
        if (likely(!ctx))
                return;
        if (cpuctx->task_ctx == ctx)
                return;
-       __perf_event_sched_in(ctx, cpuctx, cpu);
+       __perf_event_sched_in(ctx, cpuctx);
        cpuctx->task_ctx = ctx;
 }
 
-static void perf_event_cpu_sched_in(struct perf_cpu_context *cpuctx, int cpu)
+static void perf_event_cpu_sched_in(struct perf_cpu_context *cpuctx)
 {
        struct perf_event_context *ctx = &cpuctx->ctx;
 
-       __perf_event_sched_in(ctx, cpuctx, cpu);
+       __perf_event_sched_in(ctx, cpuctx);
 }
 
 #define MAX_INTERRUPTS (~0ULL)
@@ -1375,6 +1382,9 @@ static void perf_ctx_adjust_freq(struct perf_event_context *ctx)
                if (event->state != PERF_EVENT_STATE_ACTIVE)
                        continue;
 
+               if (event->cpu != -1 && event->cpu != smp_processor_id())
+                       continue;
+
                hwc = &event->hw;
 
                interrupts = hwc->interrupts;
@@ -1452,7 +1462,7 @@ static void rotate_ctx(struct perf_event_context *ctx)
        raw_spin_unlock(&ctx->lock);
 }
 
-void perf_event_task_tick(struct task_struct *curr, int cpu)
+void perf_event_task_tick(struct task_struct *curr)
 {
        struct perf_cpu_context *cpuctx;
        struct perf_event_context *ctx;
@@ -1460,7 +1470,7 @@ void perf_event_task_tick(struct task_struct *curr, int cpu)
        if (!atomic_read(&nr_events))
                return;
 
-       cpuctx = &per_cpu(perf_cpu_context, cpu);
+       cpuctx = &__get_cpu_var(perf_cpu_context);
        ctx = curr->perf_event_ctxp;
 
        perf_ctx_adjust_freq(&cpuctx->ctx);
@@ -1475,9 +1485,9 @@ void perf_event_task_tick(struct task_struct *curr, int cpu)
        if (ctx)
                rotate_ctx(ctx);
 
-       perf_event_cpu_sched_in(cpuctx, cpu);
+       perf_event_cpu_sched_in(cpuctx);
        if (ctx)
-               perf_event_task_sched_in(curr, cpu);
+               perf_event_task_sched_in(curr);
 }
 
 /*
@@ -1518,7 +1528,7 @@ static void perf_event_enable_on_exec(struct task_struct *task)
 
        raw_spin_unlock(&ctx->lock);
 
-       perf_event_task_sched_in(task, smp_processor_id());
+       perf_event_task_sched_in(task);
  out:
        local_irq_restore(flags);
 }
@@ -1595,15 +1605,12 @@ static struct perf_event_context *find_get_context(pid_t pid, int cpu)
        unsigned long flags;
        int err;
 
-       /*
-        * If cpu is not a wildcard then this is a percpu event:
-        */
-       if (cpu != -1) {
+       if (pid == -1 && cpu != -1) {
                /* Must be root to operate on a CPU event: */
                if (perf_paranoid_cpu() && !capable(CAP_SYS_ADMIN))
                        return ERR_PTR(-EACCES);
 
-               if (cpu < 0 || cpu > num_possible_cpus())
+               if (cpu < 0 || cpu >= nr_cpumask_bits)
                        return ERR_PTR(-EINVAL);
 
                /*
@@ -3262,6 +3269,9 @@ static void perf_event_task_output(struct perf_event *event,
 
 static int perf_event_task_match(struct perf_event *event)
 {
+       if (event->cpu != -1 && event->cpu != smp_processor_id())
+               return 0;
+
        if (event->attr.comm || event->attr.mmap || event->attr.task)
                return 1;
 
@@ -3287,12 +3297,11 @@ static void perf_event_task_event(struct perf_task_event *task_event)
        rcu_read_lock();
        cpuctx = &get_cpu_var(perf_cpu_context);
        perf_event_task_ctx(&cpuctx->ctx, task_event);
-       put_cpu_var(perf_cpu_context);
-
        if (!ctx)
                ctx = rcu_dereference(task_event->task->perf_event_ctxp);
        if (ctx)
                perf_event_task_ctx(ctx, task_event);
+       put_cpu_var(perf_cpu_context);
        rcu_read_unlock();
 }
 
@@ -3369,6 +3378,9 @@ static void perf_event_comm_output(struct perf_event *event,
 
 static int perf_event_comm_match(struct perf_event *event)
 {
+       if (event->cpu != -1 && event->cpu != smp_processor_id())
+               return 0;
+
        if (event->attr.comm)
                return 1;
 
@@ -3405,15 +3417,10 @@ static void perf_event_comm_event(struct perf_comm_event *comm_event)
        rcu_read_lock();
        cpuctx = &get_cpu_var(perf_cpu_context);
        perf_event_comm_ctx(&cpuctx->ctx, comm_event);
-       put_cpu_var(perf_cpu_context);
-
-       /*
-        * doesn't really matter which of the child contexts the
-        * events ends up in.
-        */
        ctx = rcu_dereference(current->perf_event_ctxp);
        if (ctx)
                perf_event_comm_ctx(ctx, comm_event);
+       put_cpu_var(perf_cpu_context);
        rcu_read_unlock();
 }
 
@@ -3488,6 +3495,9 @@ 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->cpu != -1 && event->cpu != smp_processor_id())
+               return 0;
+
        if (event->attr.mmap)
                return 1;
 
@@ -3561,15 +3571,10 @@ got_name:
        rcu_read_lock();
        cpuctx = &get_cpu_var(perf_cpu_context);
        perf_event_mmap_ctx(&cpuctx->ctx, mmap_event);
-       put_cpu_var(perf_cpu_context);
-
-       /*
-        * doesn't really matter which of the child contexts the
-        * events ends up in.
-        */
        ctx = rcu_dereference(current->perf_event_ctxp);
        if (ctx)
                perf_event_mmap_ctx(ctx, mmap_event);
+       put_cpu_var(perf_cpu_context);
        rcu_read_unlock();
 
        kfree(buf);
@@ -3860,6 +3865,9 @@ static int perf_swevent_match(struct perf_event *event,
                                struct perf_sample_data *data,
                                struct pt_regs *regs)
 {
+       if (event->cpu != -1 && event->cpu != smp_processor_id())
+               return 0;
+
        if (!perf_swevent_is_counting(event))
                return 0;
 
@@ -4169,7 +4177,7 @@ static const struct pmu perf_ops_task_clock = {
        .read           = task_clock_perf_event_read,
 };
 
-#ifdef CONFIG_EVENT_PROFILE
+#ifdef CONFIG_EVENT_TRACING
 
 void perf_tp_event(int event_id, u64 addr, u64 count, void *record,
                          int entry_size)
@@ -4274,7 +4282,7 @@ static void perf_event_free_filter(struct perf_event *event)
 {
 }
 
-#endif /* CONFIG_EVENT_PROFILE */
+#endif /* CONFIG_EVENT_TRACING */
 
 #ifdef CONFIG_HAVE_HW_BREAKPOINT
 static void bp_perf_event_destroy(struct perf_event *event)
@@ -4564,7 +4572,7 @@ static int perf_copy_attr(struct perf_event_attr __user *uattr,
        if (attr->type >= PERF_TYPE_MAX)
                return -EINVAL;
 
-       if (attr->__reserved_1 || attr->__reserved_2 || attr->__reserved_3)
+       if (attr->__reserved_1 || attr->__reserved_2)
                return -EINVAL;
 
        if (attr->sample_type & ~(PERF_SAMPLE_MAX-1))