loongarch/perf: Remove driver-specific throttle support

Kan Liang · Peter Zijlstra · commit b82f8885d1fd · 2025-05-21T13:57:46.000+02:00
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/20250520181644.2673067-14-kan.liang@linux.intel.com
diff --git a/arch/loongarch/kernel/perf_event.c b/arch/loongarch/kernel/perf_event.c
@@ -479,8 +479,7 @@ static void handle_associated_event(struct cpu_hw_events *cpuc, int idx,
 	if (!loongarch_pmu_event_set_period(event, hwc, idx))
 		return;
 
-	if (perf_event_overflow(event, data, regs))
-		loongarch_pmu_disable_event(idx);
+	perf_event_overflow(event, data, regs);
 }
 
 static irqreturn_t pmu_handle_irq(int irq, void *dev)

Original file line number	Diff line number	Diff line change
`@@ -479,8 +479,7 @@ static void handle_associated_event(struct cpu_hw_events *cpuc, int idx,`
`479`	`479`	`if (!loongarch_pmu_event_set_period(event, hwc, idx))`
`480`	`480`	`return;`
`481`	`481`
`482`		`- if (perf_event_overflow(event, data, regs))`
`483`		`- loongarch_pmu_disable_event(idx);`
	`482`	`+ perf_event_overflow(event, data, regs);`
`484`	`483`	`}`
`485`	`484`
`486`	`485`	`static irqreturn_t pmu_handle_irq(int irq, void *dev)`