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s390/cpumf: remove superfluous nr_cpumask_bits check

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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>
This commit is contained in:
Heiko Carstens 2017-09-21 14:43:10 +02:00 committed by Martin Schwidefsky
parent 76b3138192
commit 1922099979
1 changed files with 1 additions and 5 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

6
arch/s390/kernel/perf_cpum_sf.c
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@ -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 */ /* Check online status of the CPU to which the event is pinned */
if (event->cpu >= 0) { if (event->cpu >= 0 && !cpu_online(event->cpu))
if ((unsigned int)event->cpu >= nr_cpumask_bits)
return -ENODEV; return -ENODEV;
if (!cpu_online(event->cpu))
return -ENODEV;
}
/* Force reset of idle/hv excludes regardless of what the /* Force reset of idle/hv excludes regardless of what the
* user requested. * user requested.