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perfcounters: remove warnings

Browse Source 
Impact: remove debug checks

Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar 2008-12-23 12:04:16 +01:00
parent 94c46572a6
commit 8fb9331391
3 changed files with 0 additions and 19 deletions
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7
arch/x86/kernel/cpu/perf_counter.c
View File

@ -64,7 +64,6 @@ x86_perf_counter_update(struct perf_counter *counter,
{
u64 prev_raw_count, new_raw_count, delta;
WARN_ON_ONCE(counter->state != PERF_COUNTER_STATE_ACTIVE);
/*
* Careful: an NMI might modify the previous counter value.
*
@ -89,7 +88,6 @@ again:
* of the count, so we do that by clipping the delta to 32 bits:
*/
delta = (u64)(u32)((s32)new_raw_count - (s32)prev_raw_count);
WARN_ON_ONCE((int)delta < 0);
atomic64_add(delta, &counter->count);
atomic64_sub(delta, &hwc->period_left);
@ -193,7 +191,6 @@ __x86_perf_counter_disable(struct perf_counter *counter,
int err;
err = wrmsr_safe(hwc->config_base + idx, hwc->config, 0);
WARN_ON_ONCE(err);
}
static DEFINE_PER_CPU(u64, prev_left[MAX_HW_COUNTERS]);
@ -209,8 +206,6 @@ __hw_perf_counter_set_period(struct perf_counter *counter,
s32 left = atomic64_read(&hwc->period_left);
s32 period = hwc->irq_period;
WARN_ON_ONCE(period <= 0);
/*
* If we are way outside a reasoable range then just skip forward:
*/
@ -224,8 +219,6 @@ __hw_perf_counter_set_period(struct perf_counter *counter,
atomic64_set(&hwc->period_left, left);
}
WARN_ON_ONCE(left <= 0);
per_cpu(prev_left[idx], smp_processor_id()) = left;
/*

4
include/linux/perf_counter.h
View File

@ -218,8 +218,6 @@ struct perf_cpu_context {
extern int perf_max_counters;
#ifdef CONFIG_PERF_COUNTERS
extern void
perf_counter_show(struct perf_counter *counter, char *str, int trace);
extern const struct hw_perf_counter_ops *
hw_perf_counter_init(struct perf_counter *counter);
@ -237,8 +235,6 @@ extern int perf_counter_task_enable(void);
#else
static inline void
perf_counter_show(struct perf_counter *counter, char *str, int trace) { }
static inline void
perf_counter_task_sched_in(struct task_struct *task, int cpu) { }
static inline void
perf_counter_task_sched_out(struct task_struct *task, int cpu) { }

8
kernel/perf_counter.c
View File

@ -861,8 +861,6 @@ static void task_clock_perf_counter_update(struct perf_counter *counter)
atomic64_set(&counter->hw.prev_count, now);
delta = now - prev;
if (WARN_ON_ONCE(delta < 0))
delta = 0;
atomic64_add(delta, &counter->count);
}
@ -906,8 +904,6 @@ static void page_faults_perf_counter_update(struct perf_counter *counter)
atomic64_set(&counter->hw.prev_count, now);
delta = now - prev;
if (WARN_ON_ONCE(delta < 0))
delta = 0;
atomic64_add(delta, &counter->count);
}
@ -954,8 +950,6 @@ static void context_switches_perf_counter_update(struct perf_counter *counter)
atomic64_set(&counter->hw.prev_count, now);
delta = now - prev;
if (WARN_ON_ONCE(delta < 0))
delta = 0;
atomic64_add(delta, &counter->count);
}
@ -1000,8 +994,6 @@ static void cpu_migrations_perf_counter_update(struct perf_counter *counter)
atomic64_set(&counter->hw.prev_count, now);
delta = now - prev;
if (WARN_ON_ONCE(delta < 0))
delta = 0;
atomic64_add(delta, &counter->count);
}