Commit 15073765 authored by Kan Liang's avatar Kan Liang Committed by Peter Zijlstra
Browse files

perf/arm: 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 avatarLeo Yan <leo.yan@arm.com>
Link: https://lore.kernel.org/r/20250520181644.2673067-9-kan.liang@linux.intel.com
parent 6792f74e

drivers/perf/arm_pmuv3.c

+1 −2
Original line number Diff line number Diff line
@@ -887,8 +887,7 @@ static irqreturn_t armv8pmu_handle_irq(struct arm_pmu *cpu_pmu) 
		 * an irq_work which will be taken care of in the handling of

		 * IPI_IRQ_WORK.

		 */

		if (perf_event_overflow(event, &data, regs))

			cpu_pmu->disable(event);

		perf_event_overflow(event, &data, regs);

	}

	armv8pmu_start(cpu_pmu);

drivers/perf/arm_v6_pmu.c

+1 −2
Original line number Diff line number Diff line
@@ -276,8 +276,7 @@ armv6pmu_handle_irq(struct arm_pmu *cpu_pmu) 
		if (!armpmu_event_set_period(event))

			continue;



		if (perf_event_overflow(event, &data, regs))

			cpu_pmu->disable(event);

		perf_event_overflow(event, &data, regs);

	}



	/*

drivers/perf/arm_v7_pmu.c

+1 −2
Original line number Diff line number Diff line
@@ -930,8 +930,7 @@ static irqreturn_t armv7pmu_handle_irq(struct arm_pmu *cpu_pmu) 
		if (!armpmu_event_set_period(event))

			continue;



		if (perf_event_overflow(event, &data, regs))

			cpu_pmu->disable(event);

		perf_event_overflow(event, &data, regs);

	}



	/*

drivers/perf/arm_xscale_pmu.c

+2 −4
Original line number Diff line number Diff line
@@ -186,8 +186,7 @@ xscale1pmu_handle_irq(struct arm_pmu *cpu_pmu) 
		if (!armpmu_event_set_period(event))

			continue;



		if (perf_event_overflow(event, &data, regs))

			cpu_pmu->disable(event);

		perf_event_overflow(event, &data, regs);

	}



	irq_work_run();
@@ -519,8 +518,7 @@ xscale2pmu_handle_irq(struct arm_pmu *cpu_pmu) 
		if (!armpmu_event_set_period(event))

			continue;



		if (perf_event_overflow(event, &data, regs))

			cpu_pmu->disable(event);

		perf_event_overflow(event, &data, regs);

	}



	irq_work_run();