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s390/perf: Remove driver-specific throttle support

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The throttle support has been added in the generic code. Remove
the driver-specific throttle support.

Besides the throttle, perf_event_overflow may return true because of
event_limit. It already does an inatomic event disable. The pmu->stop
is not required either.

Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Thomas Richter <tmricht@linux.ibm.com>
Link: https://lore.kernel.org/r/20250520181644.2673067-8-kan.liang@linux.intel.com
This commit is contained in:
Kan Liang 2025-05-20 11:16:35 -07:00 committed by Peter Zijlstra
parent 954617a7cc
commit 6792f74e8d
2 changed files with 1 additions and 6 deletions
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2
arch/s390/kernel/perf_cpum_cf.c
View File

@ -980,8 +980,6 @@ static int cfdiag_push_sample(struct perf_event *event,
}
overflow = perf_event_overflow(event, &data, &regs);
if (overflow)
event->pmu->stop(event, 0);
perf_event_update_userpage(event);
return overflow;

5
arch/s390/kernel/perf_cpum_sf.c
View File

@ -1072,10 +1072,7 @@ static int perf_push_sample(struct perf_event *event,
overflow = 0;
if (perf_event_exclude(event, &regs, sde_regs))
goto out;
if (perf_event_overflow(event, &data, &regs)) {
overflow = 1;
event->pmu->stop(event, 0);
}
overflow = perf_event_overflow(event, &data, &regs);
perf_event_update_userpage(event);
out:
return overflow;