oprofile, ARM: Rework op_create_counter()
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>
diff --git a/drivers/oprofile/oprofile_perf.c b/drivers/oprofile/oprofile_perf.c
index 6853634..a34137f 100644
--- a/drivers/oprofile/oprofile_perf.c
+++ b/drivers/oprofile/oprofile_perf.c
@@ -71,28 +71,28 @@
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)