linux-kernel - [PATCH v6 06/21] drivers/perf: apple_m1: Support per-implementation PMU startup

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Message-Id: <20250407-apple-cpmu-v6-6-ae8c2f225c1f@gmail.com>
Date: Mon, 07 Apr 2025 12:45:15 +0800
From: Nick Chan <towinchenmi@...il.com>
To: Will Deacon <will@...nel.org>, Mark Rutland <mark.rutland@....com>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Catalin Marinas <catalin.marinas@....com>, Sven Peter <sven@...npeter.dev>, 
 Janne Grunau <j@...nau.net>, Alyssa Rosenzweig <alyssa@...enzweig.io>, 
 Neal Gompa <neal@...pa.dev>
Cc: Marc Zyngier <maz@...nel.org>, linux-arm-kernel@...ts.infradead.org, 
 linux-perf-users@...r.kernel.org, devicetree@...r.kernel.org, 
 asahi@...ts.linux.dev, linux-kernel@...r.kernel.org, 
 Nick Chan <towinchenmi@...il.com>
Subject: [PATCH v6 06/21] drivers/perf: apple_m1: Support
 per-implementation PMU startup

Support for implementations that deliver its interrupts in ways other than
FIQ will be added, which requires a per-implementation startup function.

Signed-off-by: Nick Chan <towinchenmi@...il.com>
---
 drivers/perf/apple_m1_cpu_pmu.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/perf/apple_m1_cpu_pmu.c b/drivers/perf/apple_m1_cpu_pmu.c
index f2566a0f8d330fdc0d71ae298f16ee9700a13c23..38fb9200369c11d0d7674bec4f350915c67352b9 100644
--- a/drivers/perf/apple_m1_cpu_pmu.c
+++ b/drivers/perf/apple_m1_cpu_pmu.c
@@ -660,7 +660,6 @@ static int apple_pmu_init(struct arm_pmu *cpu_pmu, u32 counters)
 	cpu_pmu->read_counter	  = m1_pmu_read_counter;
 	cpu_pmu->write_counter	  = m1_pmu_write_counter;
 	cpu_pmu->clear_event_idx  = m1_pmu_clear_event_idx;
-	cpu_pmu->start		  = m1_pmu_start;
 	cpu_pmu->stop		  = m1_pmu_stop;
 	cpu_pmu->set_event_filter = m1_pmu_set_event_filter;
 
@@ -682,6 +681,7 @@ static int m1_pmu_ice_init(struct arm_pmu *cpu_pmu)
 	cpu_pmu->get_event_idx	  = m1_pmu_get_event_idx;
 	cpu_pmu->map_event	  = m1_pmu_map_event;
 	cpu_pmu->reset		  = m1_pmu_reset;
+	cpu_pmu->start		  = m1_pmu_start;
 	return apple_pmu_init(cpu_pmu, M1_PMU_NR_COUNTERS);
 }
 
@@ -691,6 +691,7 @@ static int m1_pmu_fire_init(struct arm_pmu *cpu_pmu)
 	cpu_pmu->get_event_idx	  = m1_pmu_get_event_idx;
 	cpu_pmu->map_event	  = m1_pmu_map_event;
 	cpu_pmu->reset		  = m1_pmu_reset;
+	cpu_pmu->start		  = m1_pmu_start;
 	return apple_pmu_init(cpu_pmu, M1_PMU_NR_COUNTERS);
 }
 
@@ -700,6 +701,7 @@ static int m2_pmu_avalanche_init(struct arm_pmu *cpu_pmu)
 	cpu_pmu->get_event_idx	  = m1_pmu_get_event_idx;
 	cpu_pmu->map_event	  = m2_pmu_map_event;
 	cpu_pmu->reset		  = m1_pmu_reset;
+	cpu_pmu->start		  = m1_pmu_start;
 	return apple_pmu_init(cpu_pmu, M1_PMU_NR_COUNTERS);
 }
 
@@ -709,6 +711,7 @@ static int m2_pmu_blizzard_init(struct arm_pmu *cpu_pmu)
 	cpu_pmu->get_event_idx	  = m1_pmu_get_event_idx;
 	cpu_pmu->map_event	  = m2_pmu_map_event;
 	cpu_pmu->reset		  = m1_pmu_reset;
+	cpu_pmu->start		  = m1_pmu_start;
 	return apple_pmu_init(cpu_pmu, M1_PMU_NR_COUNTERS);
 }
 

-- 
2.49.0