linux-kernel - [tip: perf/core] perf/apple_m1: Remove driver-specific throttle support

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Message-ID: <174782975749.406.1489987262212092748.tip-bot2@tip-bot2>
Date: Wed, 21 May 2025 12:15:57 -0000
From: "tip-bot2 for Kan Liang" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Kan Liang <kan.liang@...ux.intel.com>,
 "Peter Zijlstra (Intel)" <peterz@...radead.org>, x86@...nel.org,
 linux-kernel@...r.kernel.org
Subject:
 [tip: perf/core] perf/apple_m1: Remove driver-specific throttle support

The following commit has been merged into the perf/core branch of tip:

Commit-ID:     f1a6fe2ab1d937370e3f334cbf519c794eef4411
Gitweb:        https://git.kernel.org/tip/f1a6fe2ab1d937370e3f334cbf519c794eef4411
Author:        Kan Liang <kan.liang@...ux.intel.com>
AuthorDate:    Tue, 20 May 2025 11:16:37 -07:00
Committer:     Peter Zijlstra <peterz@...radead.org>
CommitterDate: Wed, 21 May 2025 13:57:44 +02:00

perf/apple_m1: 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@...ux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Link: https://lore.kernel.org/r/20250520181644.2673067-10-kan.liang@linux.intel.com
---
 drivers/perf/apple_m1_cpu_pmu.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/perf/apple_m1_cpu_pmu.c b/drivers/perf/apple_m1_cpu_pmu.c
index df9a28b..81b6f1a 100644
--- a/drivers/perf/apple_m1_cpu_pmu.c
+++ b/drivers/perf/apple_m1_cpu_pmu.c
@@ -474,8 +474,7 @@ static irqreturn_t m1_pmu_handle_irq(struct arm_pmu *cpu_pmu)
 		if (!armpmu_event_set_period(event))
 			continue;
 
-		if (perf_event_overflow(event, &data, regs))
-			m1_pmu_disable_event(event);
+		perf_event_overflow(event, &data, regs);
 	}
 
 	cpu_pmu->start(cpu_pmu);