Merge branch 'perf/urgent' into perf/core

Merge reason: We want to queue up a dependent patch.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 21 insertions, 9 deletions

diff --git a/kernel/perf_event.c b/kernel/perf_event.c
index 3853d49c7d56..8bf61273c58b 100644
--- a/kernel/perf_event.c
+++ b/kernel/perf_event.c
@@ -2790,6 +2790,11 @@ __weak struct perf_callchain_entry *perf_callchain(struct pt_regs *regs)
         return NULL;
 }
 
+__weak
+void perf_arch_fetch_caller_regs(struct pt_regs *regs, unsigned long ip, int skip)
+{
+}
+
 /*
  * Output
  */
@@ -4317,9 +4322,8 @@ static const struct pmu perf_ops_task_clock = {
 #ifdef CONFIG_EVENT_TRACING
 
 void perf_tp_event(int event_id, u64 addr, u64 count, void *record,
-                          int entry_size)
+                   int entry_size, struct pt_regs *regs)
 {
-        struct pt_regs *regs = get_irq_regs();
         struct perf_sample_data data;
         struct perf_raw_record raw = {
                 .size = entry_size,
@@ -4329,12 +4333,9 @@ void perf_tp_event(int event_id, u64 addr, u64 count, void *record,
         perf_sample_data_init(&data, addr);
         data.raw = &raw;
 
-        if (!regs)
-                regs = task_pt_regs(current);
-
         /* Trace events already protected against recursion */
         do_perf_sw_event(PERF_TYPE_TRACEPOINT, event_id, count, 1,
-                                &data, regs);
+                         &data, regs);
 }
 EXPORT_SYMBOL_GPL(perf_tp_event);
 
@@ -4350,7 +4351,7 @@ static int perf_tp_event_match(struct perf_event *event,
 
 static void tp_perf_event_destroy(struct perf_event *event)
 {
-        ftrace_profile_disable(event->attr.config);
+        perf_trace_disable(event->attr.config);
 }
 
 static const struct pmu *tp_perf_event_init(struct perf_event *event)
@@ -4364,7 +4365,7 @@ static const struct pmu *tp_perf_event_init(struct perf_event *event)
                         !capable(CAP_SYS_ADMIN))
                 return ERR_PTR(-EPERM);
 
-        if (ftrace_profile_enable(event->attr.config))
+        if (perf_trace_enable(event->attr.config))
                 return NULL;
 
         event->destroy = tp_perf_event_destroy;
@@ -5371,12 +5372,22 @@ int perf_event_init_task(struct task_struct *child)
         return ret;
 }
 
+static void __init perf_event_init_all_cpus(void)
+{
+        int cpu;
+        struct perf_cpu_context *cpuctx;
+
+        for_each_possible_cpu(cpu) {
+                cpuctx = &per_cpu(perf_cpu_context, cpu);
+                __perf_event_init_context(&cpuctx->ctx, NULL);
+        }
+}
+
 static void __cpuinit perf_event_init_cpu(int cpu)
 {
         struct perf_cpu_context *cpuctx;
 
         cpuctx = &per_cpu(perf_cpu_context, cpu);
-        __perf_event_init_context(&cpuctx->ctx, NULL);
 
         spin_lock(&perf_resource_lock);
         cpuctx->max_pertask = perf_max_events - perf_reserved_percpu;
@@ -5442,6 +5453,7 @@ static struct notifier_block __cpuinitdata perf_cpu_nb = {
 
 void __init perf_event_init(void)
 {
+        perf_event_init_all_cpus();
         perf_cpu_notify(&perf_cpu_nb, (unsigned long)CPU_UP_PREPARE,
                         (void *)(long)smp_processor_id());
         perf_cpu_notify(&perf_cpu_nb, (unsigned long)CPU_ONLINE,