sparc/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: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20250520181644.2673067-15-kan.liang@linux.intel.com

diff --git a/arch/sparc/kernel/perf_event.c b/arch/sparc/kernel/perf_event.c
index f02a283a8e8f052ed6400291db0d085a2c0071f3..cae4d33002a54ece3b9d91bcd953188f47825219 100644 (file)
--- a/arch/sparc/kernel/perf_event.c
+++ b/arch/sparc/kernel/perf_event.c
@@ -1668,8 +1668,7 @@ static int __kprobes perf_event_nmi_handler(struct notifier_block *self,
                if (!sparc_perf_event_set_period(event, hwc, idx))
                        continue;
 
-               if (perf_event_overflow(event, &data, regs))
-                       sparc_pmu_stop(event, 0);
+               perf_event_overflow(event, &data, regs);
        }
 
        finish_clock = sched_clock();