perf_events: Simplify code by removing cpu argument to hw_perf_group_sched_in()
Since the cpu argument to hw_perf_group_sched_in() is always
smp_processor_id(), simplify the code a little by removing this argument
and using the current cpu where needed.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: David Miller <davem@davemloft.net>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <1265890918.5396.3.camel@laptop>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/powerpc/kernel/perf_event.c b/arch/powerpc/kernel/perf_event.c
index 1eb85fb..b6cf8f1 100644
--- a/arch/powerpc/kernel/perf_event.c
+++ b/arch/powerpc/kernel/perf_event.c
@@ -718,10 +718,10 @@
return n;
}
-static void event_sched_in(struct perf_event *event, int cpu)
+static void event_sched_in(struct perf_event *event)
{
event->state = PERF_EVENT_STATE_ACTIVE;
- event->oncpu = cpu;
+ event->oncpu = smp_processor_id();
event->tstamp_running += event->ctx->time - event->tstamp_stopped;
if (is_software_event(event))
event->pmu->enable(event);
@@ -735,7 +735,7 @@
*/
int hw_perf_group_sched_in(struct perf_event *group_leader,
struct perf_cpu_context *cpuctx,
- struct perf_event_context *ctx, int cpu)
+ struct perf_event_context *ctx)
{
struct cpu_hw_events *cpuhw;
long i, n, n0;
@@ -766,10 +766,10 @@
cpuhw->event[i]->hw.config = cpuhw->events[i];
cpuctx->active_oncpu += n;
n = 1;
- event_sched_in(group_leader, cpu);
+ event_sched_in(group_leader);
list_for_each_entry(sub, &group_leader->sibling_list, group_entry) {
if (sub->state != PERF_EVENT_STATE_OFF) {
- event_sched_in(sub, cpu);
+ event_sched_in(sub);
++n;
}
}