Merge branch 'iov_iter' into for-next

[firefly-linux-kernel-4.4.55.git] / kernel / events / core.c

diff --git a/kernel/events/core.c b/kernel/events/core.c
index 446fbeefad1c1bfeee5822dfecce883f0029f027..e56923026dd87f459b3ab746cfdcfca167586474 100644 (file)
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -1562,8 +1562,10 @@ static void perf_remove_from_context(struct perf_event *event, bool detach_group
 
        if (!task) {
                /*
-                * Per cpu events are removed via an smp call and
-                * the removal is always successful.
+                * Per cpu events are removed via an smp call. The removal can
+                * fail if the CPU is currently offline, but in that case we
+                * already called __perf_remove_from_context from
+                * perf_event_exit_cpu.
                 */
                cpu_function_call(event->cpu, __perf_remove_from_context, &re);
                return;
@@ -6071,11 +6073,6 @@ static int perf_swevent_init(struct perf_event *event)
        return 0;
 }
 
-static int perf_swevent_event_idx(struct perf_event *event)
-{
-       return 0;
-}
-
 static struct pmu perf_swevent = {
        .task_ctx_nr    = perf_sw_context,
 
@@ -6085,8 +6082,6 @@ static struct pmu perf_swevent = {
        .start          = perf_swevent_start,
        .stop           = perf_swevent_stop,
        .read           = perf_swevent_read,
-
-       .event_idx      = perf_swevent_event_idx,
 };
 
 #ifdef CONFIG_EVENT_TRACING
@@ -6204,8 +6199,6 @@ static struct pmu perf_tracepoint = {
        .start          = perf_swevent_start,
        .stop           = perf_swevent_stop,
        .read           = perf_swevent_read,
-
-       .event_idx      = perf_swevent_event_idx,
 };
 
 static inline void perf_tp_register(void)
@@ -6431,8 +6424,6 @@ static struct pmu perf_cpu_clock = {
        .start          = cpu_clock_event_start,
        .stop           = cpu_clock_event_stop,
        .read           = cpu_clock_event_read,
-
-       .event_idx      = perf_swevent_event_idx,
 };
 
 /*
@@ -6511,8 +6502,6 @@ static struct pmu perf_task_clock = {
        .start          = task_clock_event_start,
        .stop           = task_clock_event_stop,
        .read           = task_clock_event_read,
-
-       .event_idx      = perf_swevent_event_idx,
 };
 
 static void perf_pmu_nop_void(struct pmu *pmu)
@@ -6542,7 +6531,7 @@ static void perf_pmu_cancel_txn(struct pmu *pmu)
 
 static int perf_event_idx_default(struct perf_event *event)
 {
-       return event->hw.idx + 1;
+       return 0;
 }
 
 /*
@@ -8130,7 +8119,7 @@ static void perf_pmu_rotate_stop(struct pmu *pmu)
 
 static void __perf_event_exit_context(void *__info)
 {
-       struct remove_event re = { .detach_group = false };
+       struct remove_event re = { .detach_group = true };
        struct perf_event_context *ctx = __info;
 
        perf_pmu_rotate_stop(ctx->pmu);