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powerpc/perf/hv-24x7: Define update_event_count()

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Move the code to update an event count into a new function,
update_event_count().

Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Sukadev Bhattiprolu 2015-03-30 18:53:46 -07:00 • committed by Michael Ellerman
parent 3ca4ea71cb
commit 529ce8c9dd
1 changed files with 9 additions and 3 deletions
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12
arch/powerpc/perf/hv-24x7.c
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@ -1172,14 +1172,20 @@ static u64 h_24x7_get_value(struct perf_event *event)
return ct; return ct;
} }
static void h_24x7_event_read(struct perf_event *event) static void update_event_count(struct perf_event *event, u64 now)
{ {
s64 prev; s64 prev;
prev = local64_xchg(&event->hw.prev_count, now);
local64_add(now - prev, &event->count);
}
static void h_24x7_event_read(struct perf_event *event)
{
u64 now; u64 now;
now = h_24x7_get_value(event); now = h_24x7_get_value(event);
prev = local64_xchg(&event->hw.prev_count, now); update_event_count(event, now);
local64_add(now - prev, &event->count);
} }
static void h_24x7_event_start(struct perf_event *event, int flags) static void h_24x7_event_start(struct perf_event *event, int flags)