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oprofile, ARM: Rework op_create_counter()

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This patch simplifies op_create_counter(). Removing if/else if paths
and return code variable by direct returning from function.

Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Robert Richter <robert.richter@amd.com>
This commit is contained in:
Robert Richter 2010-09-29 14:43:29 +02:00
parent 9c91283a19
commit 2bcb2b641a
1 changed files with 10 additions and 10 deletions
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20
drivers/oprofile/oprofile_perf.c
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@ -71,28 +71,28 @@ static void op_perf_setup(void)
static int op_create_counter(int cpu, int event)
{
int ret = 0;
struct perf_event *pevent;
if (!counter_config[event].enabled || (perf_events[cpu][event] != NULL))
return ret;
if (!counter_config[event].enabled || perf_events[cpu][event])
return 0;
pevent = perf_event_create_kernel_counter(&counter_config[event].attr,
cpu, -1,
op_overflow_handler);
if (IS_ERR(pevent)) {
ret = PTR_ERR(pevent);
} else if (pevent->state != PERF_EVENT_STATE_ACTIVE) {
if (IS_ERR(pevent))
return PTR_ERR(pevent);
if (pevent->state != PERF_EVENT_STATE_ACTIVE) {
perf_event_release_kernel(pevent);
pr_warning("oprofile: failed to enable event %d "
"on CPU %d\n", event, cpu);
ret = -EBUSY;
} else {
perf_events[cpu][event] = pevent;
return -EBUSY;
}
return ret;
perf_events[cpu][event] = pevent;
return 0;
}
static void op_destroy_counter(int cpu, int event)