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alpha: convert perf_event to use local_t 

Updates the Alpha perf_event code to match the changes
recently made to the core perf_event code in commit
e78505958c.

Signed-off-by: Michael Cree <mcree@orcon.net.nz>
Signed-off-by: Matt Turner <mattst88@gmail.com>
This commit is contained in:
Michael Cree 2010-08-31 22:46:04 -04:00 committed by Matt Turner
parent 59b25ed914
commit 7b598cdd03
1 changed files with 9 additions and 9 deletions
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18
arch/alpha/kernel/perf_event.c
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@ -241,20 +241,20 @@ static inline unsigned long alpha_read_pmc(int idx)
static int alpha_perf_event_set_period(struct perf_event *event,
struct hw_perf_event *hwc, int idx)
{
long left = atomic64_read(&hwc->period_left);
long left = local64_read(&hwc->period_left);
long period = hwc->sample_period;
int ret = 0;
if (unlikely(left <= -period)) {
left = period;
atomic64_set(&hwc->period_left, left);
local64_set(&hwc->period_left, left);
hwc->last_period = period;
ret = 1;
}
if (unlikely(left <= 0)) {
left += period;
atomic64_set(&hwc->period_left, left);
local64_set(&hwc->period_left, left);
hwc->last_period = period;
ret = 1;
}
@ -269,7 +269,7 @@ static int alpha_perf_event_set_period(struct perf_event *event,
if (left > (long)alpha_pmu->pmc_max_period[idx])
left = alpha_pmu->pmc_max_period[idx];
atomic64_set(&hwc->prev_count, (unsigned long)(-left));
local64_set(&hwc->prev_count, (unsigned long)(-left));
alpha_write_pmc(idx, (unsigned long)(-left));
@ -300,10 +300,10 @@ static unsigned long alpha_perf_event_update(struct perf_event *event,
long delta;
again:
prev_raw_count = atomic64_read(&hwc->prev_count);
prev_raw_count = local64_read(&hwc->prev_count);
new_raw_count = alpha_read_pmc(idx);
if (atomic64_cmpxchg(&hwc->prev_count, prev_raw_count,
if (local64_cmpxchg(&hwc->prev_count, prev_raw_count,
new_raw_count) != prev_raw_count)
goto again;
@ -316,8 +316,8 @@ again:
delta += alpha_pmu->pmc_max_period[idx] + 1;
}
atomic64_add(delta, &event->count);
atomic64_sub(delta, &hwc->period_left);
local64_add(delta, &event->count);
local64_sub(delta, &hwc->period_left);
return new_raw_count;
}
@ -636,7 +636,7 @@ static int __hw_perf_event_init(struct perf_event *event)
if (!hwc->sample_period) {
hwc->sample_period = alpha_pmu->pmc_max_period[0];
hwc->last_period = hwc->sample_period;
atomic64_set(&hwc->period_left, hwc->sample_period);
local64_set(&hwc->period_left, hwc->sample_period);
}
return 0;