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| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2017-09-21 14:43:10 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2017-09-28 07:29:43 +0200 |
| commit | 19220999790a5a67bf954f19e9115c68e889cd11 (patch) | |
| tree | 809964988d67ee63c62fdc4f2a802c2b9c3c7451 /arch/s390/kernel/perf_cpum_sf.c | |
| parent | s390/zcrypt: Explicitly check input data length. (diff) | |
| download | linux-19220999790a5a67bf954f19e9115c68e889cd11.tar.xz linux-19220999790a5a67bf954f19e9115c68e889cd11.zip | |
s390/cpumf: remove superfluous nr_cpumask_bits check
Paul Burton reported that the nr_cpumask_bits check
within cpumsf_pmu_event_init() is not necessary.
Actually there is already a prior check within
perf_event_alloc(). Therefore remove the check.
Reported-by: Paul Burton <paul.burton@imgtec.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/perf_cpum_sf.c')
| -rw-r--r-- | arch/s390/kernel/perf_cpum_sf.c | 6 |
1 files changed, 1 insertions, 5 deletions
diff --git a/arch/s390/kernel/perf_cpum_sf.c b/arch/s390/kernel/perf_cpum_sf.c index 7e1e40323b78..bd4bbf61aaf3 100644 --- a/arch/s390/kernel/perf_cpum_sf.c +++ b/arch/s390/kernel/perf_cpum_sf.c @@ -823,12 +823,8 @@ static int cpumsf_pmu_event_init(struct perf_event *event) } /* Check online status of the CPU to which the event is pinned */ - if (event->cpu >= 0) { - if ((unsigned int)event->cpu >= nr_cpumask_bits) + if (event->cpu >= 0 && !cpu_online(event->cpu)) return -ENODEV; - if (!cpu_online(event->cpu)) - return -ENODEV; - } /* Force reset of idle/hv excludes regardless of what the * user requested. |