From: Kan Liang <kan.liang@linux.intel.com>
Date: Tue, 20 May 2025 18:16:36 +0000 (-0700)
Subject: perf/arm: Remove driver-specific throttle support
X-Git-Tag: v6.16-rc1~196^2~11
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=15073765285b965f70e4a29eb9a8d2a94e9abd48;p=thirdparty%2Flinux.git

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: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Leo Yan <leo.yan@arm.com>
Link: https://lore.kernel.org/r/20250520181644.2673067-9-kan.liang@linux.intel.com
---

diff --git a/drivers/perf/arm_pmuv3.c b/drivers/perf/arm_pmuv3.c
index e506d59654e73..3db9f4ed17e8f 100644
--- a/drivers/perf/arm_pmuv3.c
+++ b/drivers/perf/arm_pmuv3.c
@@ -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);
 
diff --git a/drivers/perf/arm_v6_pmu.c b/drivers/perf/arm_v6_pmu.c
index b09615bb2bb25..7cb12c8e06c7a 100644
--- a/drivers/perf/arm_v6_pmu.c
+++ b/drivers/perf/arm_v6_pmu.c
@@ -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);
 	}
 
 	/*
diff --git a/drivers/perf/arm_v7_pmu.c b/drivers/perf/arm_v7_pmu.c
index 17831e1920bd8..a1e438101114a 100644
--- a/drivers/perf/arm_v7_pmu.c
+++ b/drivers/perf/arm_v7_pmu.c
@@ -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);
 	}
 
 	/*
diff --git a/drivers/perf/arm_xscale_pmu.c b/drivers/perf/arm_xscale_pmu.c
index 638fea9b1263d..c2ac41dd9e19c 100644
--- a/drivers/perf/arm_xscale_pmu.c
+++ b/drivers/perf/arm_xscale_pmu.c
@@ -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();