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authorIngo Molnar <mingo@kernel.org>2014-01-16 09:33:30 +0100
committerIngo Molnar <mingo@kernel.org>2014-01-16 09:33:30 +0100
commit860fc2f2640ec348b9520ca4649b1bfd23d91bc2 (patch)
tree73d90d6ef86893c89bb70e78a2b63295d531f371 /kernel/events
parent197749981e539c1eb5863f417de6dd4e2c02b76c (diff)
parentbee09ed91cacdbffdbcd3b05de8409c77ec9fcd6 (diff)
Merge branch 'perf/urgent' into perf/core
Pick up the latest fixes, refresh the development tree. Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/events')
-rw-r--r--kernel/events/core.c21
1 files changed, 18 insertions, 3 deletions
diff --git a/kernel/events/core.c b/kernel/events/core.c
index 5c8726473006..56003c6edfd3 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -1397,6 +1397,8 @@ event_sched_out(struct perf_event *event,
if (event->state != PERF_EVENT_STATE_ACTIVE)
return;
+ perf_pmu_disable(event->pmu);
+
event->state = PERF_EVENT_STATE_INACTIVE;
if (event->pending_disable) {
event->pending_disable = 0;
@@ -1413,6 +1415,8 @@ event_sched_out(struct perf_event *event,
ctx->nr_freq--;
if (event->attr.exclusive || !cpuctx->active_oncpu)
cpuctx->exclusive = 0;
+
+ perf_pmu_enable(event->pmu);
}
static void
@@ -1653,6 +1657,7 @@ event_sched_in(struct perf_event *event,
struct perf_event_context *ctx)
{
u64 tstamp = perf_event_time(event);
+ int ret = 0;
if (event->state <= PERF_EVENT_STATE_OFF)
return 0;
@@ -1675,10 +1680,13 @@ event_sched_in(struct perf_event *event,
*/
smp_wmb();
+ perf_pmu_disable(event->pmu);
+
if (event->pmu->add(event, PERF_EF_START)) {
event->state = PERF_EVENT_STATE_INACTIVE;
event->oncpu = -1;
- return -EAGAIN;
+ ret = -EAGAIN;
+ goto out;
}
event->tstamp_running += tstamp - event->tstamp_stopped;
@@ -1694,7 +1702,10 @@ event_sched_in(struct perf_event *event,
if (event->attr.exclusive)
cpuctx->exclusive = 1;
- return 0;
+out:
+ perf_pmu_enable(event->pmu);
+
+ return ret;
}
static int
@@ -2744,6 +2755,8 @@ static void perf_adjust_freq_unthr_context(struct perf_event_context *ctx,
if (!event_filter_match(event))
continue;
+ perf_pmu_disable(event->pmu);
+
hwc = &event->hw;
if (hwc->interrupts == MAX_INTERRUPTS) {
@@ -2753,7 +2766,7 @@ static void perf_adjust_freq_unthr_context(struct perf_event_context *ctx,
}
if (!event->attr.freq || !event->attr.sample_freq)
- continue;
+ goto next;
/*
* stop the event and update event->count
@@ -2775,6 +2788,8 @@ static void perf_adjust_freq_unthr_context(struct perf_event_context *ctx,
perf_adjust_period(event, period, delta, false);
event->pmu->start(event, delta > 0 ? PERF_EF_RELOAD : 0);
+ next:
+ perf_pmu_enable(event->pmu);
}
perf_pmu_enable(ctx->pmu);