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| author | Robert Richter <robert.richter@amd.com> | 2010-09-29 14:43:29 +0200 |
|---|---|---|
| committer | Robert Richter <robert.richter@amd.com> | 2010-10-11 19:34:03 +0200 |
| commit | 2bcb2b641a8f1524f7a9801eb9e52a00b8f18c6e (patch) | |
| tree | 1faeb9a6d2aecf54259205341c17fd9aef2bd5e6 /drivers/oprofile | |
| parent | 9c91283a19c2d998a83f50f113f8585709c15caf (diff) | |
| download | lwn-2bcb2b641a8f1524f7a9801eb9e52a00b8f18c6e.tar.gz lwn-2bcb2b641a8f1524f7a9801eb9e52a00b8f18c6e.zip | |
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>
Diffstat (limited to 'drivers/oprofile')
| -rw-r--r-- | drivers/oprofile/oprofile_perf.c | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/drivers/oprofile/oprofile_perf.c b/drivers/oprofile/oprofile_perf.c index 6853634c4681..a34137f2e26c 100644 --- a/drivers/oprofile/oprofile_perf.c +++ b/drivers/oprofile/oprofile_perf.c @@ -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) |