Commit 6792f74e authored by Kan Liang's avatar Kan Liang Committed by Peter Zijlstra
Browse files

s390/perf: Remove driver-specific throttle support 



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: default avatarKan Liang <kan.liang@linux.intel.com>
Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: default avatarThomas Richter <tmricht@linux.ibm.com>
Link: https://lore.kernel.org/r/20250520181644.2673067-8-kan.liang@linux.intel.com
parent 954617a7

arch/s390/kernel/perf_cpum_cf.c

+0 −2
Original line number Diff line number Diff line
@@ -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;

arch/s390/kernel/perf_cpum_sf.c

+1 −4
Original line number Diff line number Diff line
@@ -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;