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s390/cpum_sf: Remove unnecessary check for pending SDBs 

In interrupt handling the function extend_sampling_buffer()
is called after checking for a possibly extension.
This check is not necessary as the called function itself
performs this check again.

Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
This commit is contained in:
Thomas Richter 2019-11-22 13:42:55 +01:00 committed by Vasily Gorbik
parent 532da3de70
commit c17a7c6ee8
1 changed files with 1 additions and 2 deletions
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3
arch/s390/kernel/perf_cpum_sf.c
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@ -952,8 +952,7 @@ static void cpumsf_pmu_enable(struct pmu *pmu)
* buffer extents
*/
sfb_account_overflows(cpuhw, hwc);
if (sfb_has_pending_allocs(&cpuhw->sfb, hwc))
extend_sampling_buffer(&cpuhw->sfb, hwc);
extend_sampling_buffer(&cpuhw->sfb, hwc);
}
/* Rate may be adjusted with ioctl() */
cpuhw->lsctl.interval = SAMPL_RATE(&cpuhw->event->hw);