linux-kernel - [PATCH v2 04/12] perf: arm_v6/7_pmu: Drop non-DT probe support

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Message-Id: <20240626-arm-pmu-3-9-icntr-v2-4-c9784b4f4065@kernel.org>
Date: Wed, 26 Jun 2024 16:32:28 -0600
From: "Rob Herring (Arm)" <robh@...nel.org>
To: Russell King <linux@...linux.org.uk>, 
 Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>, 
 Arnaldo Carvalho de Melo <acme@...nel.org>, 
 Namhyung Kim <namhyung@...nel.org>, Mark Rutland <mark.rutland@....com>, 
 Alexander Shishkin <alexander.shishkin@...ux.intel.com>, 
 Jiri Olsa <jolsa@...nel.org>, Ian Rogers <irogers@...gle.com>, 
 Adrian Hunter <adrian.hunter@...el.com>, Will Deacon <will@...nel.org>, 
 Marc Zyngier <maz@...nel.org>, Oliver Upton <oliver.upton@...ux.dev>, 
 James Morse <james.morse@....com>, 
 Suzuki K Poulose <suzuki.poulose@....com>, 
 Zenghui Yu <yuzenghui@...wei.com>, 
 Catalin Marinas <catalin.marinas@....com>, 
 James Clark <james.clark@....com>
Cc: linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, 
 linux-perf-users@...r.kernel.org, kvmarm@...ts.linux.dev
Subject: [PATCH v2 04/12] perf: arm_v6/7_pmu: Drop non-DT probe support

There are no non-DT based PMU users for v6 or v7, so drop the custom
non-DT probe table. Unfortunately XScale still needs non-DT probing.

Note that this drops support for arm1156 PMU, but there are no arm1156
based systems supported in the kernel.

Acked-by: Mark Rutland <mark.rutland@....com>
Signed-off-by: Rob Herring (Arm) <robh@...nel.org>
---
v2:
 - Note that XScale still needs non-DT probe
---
 drivers/perf/arm_v6_pmu.c | 17 +----------------
 drivers/perf/arm_v7_pmu.c | 10 +---------
 2 files changed, 2 insertions(+), 25 deletions(-)

diff --git a/drivers/perf/arm_v6_pmu.c b/drivers/perf/arm_v6_pmu.c
index f7593843bb85..0bb685b4bac5 100644
--- a/drivers/perf/arm_v6_pmu.c
+++ b/drivers/perf/arm_v6_pmu.c
@@ -401,13 +401,6 @@ static int armv6_1136_pmu_init(struct arm_pmu *cpu_pmu)
 	return 0;
 }
 
-static int armv6_1156_pmu_init(struct arm_pmu *cpu_pmu)
-{
-	armv6pmu_init(cpu_pmu);
-	cpu_pmu->name		= "armv6_1156";
-	return 0;
-}
-
 static int armv6_1176_pmu_init(struct arm_pmu *cpu_pmu)
 {
 	armv6pmu_init(cpu_pmu);
@@ -421,17 +414,9 @@ static const struct of_device_id armv6_pmu_of_device_ids[] = {
 	{ /* sentinel value */ }
 };
 
-static const struct pmu_probe_info armv6_pmu_probe_table[] = {
-	ARM_PMU_PROBE(ARM_CPU_PART_ARM1136, armv6_1136_pmu_init),
-	ARM_PMU_PROBE(ARM_CPU_PART_ARM1156, armv6_1156_pmu_init),
-	ARM_PMU_PROBE(ARM_CPU_PART_ARM1176, armv6_1176_pmu_init),
-	{ /* sentinel value */ }
-};
-
 static int armv6_pmu_device_probe(struct platform_device *pdev)
 {
-	return arm_pmu_device_probe(pdev, armv6_pmu_of_device_ids,
-				    armv6_pmu_probe_table);
+	return arm_pmu_device_probe(pdev, armv6_pmu_of_device_ids, NULL);
 }
 
 static struct platform_driver armv6_pmu_driver = {
diff --git a/drivers/perf/arm_v7_pmu.c b/drivers/perf/arm_v7_pmu.c
index fdd936fbd188..928ac3d626ed 100644
--- a/drivers/perf/arm_v7_pmu.c
+++ b/drivers/perf/arm_v7_pmu.c
@@ -1977,17 +1977,9 @@ static const struct of_device_id armv7_pmu_of_device_ids[] = {
 	{},
 };
 
-static const struct pmu_probe_info armv7_pmu_probe_table[] = {
-	ARM_PMU_PROBE(ARM_CPU_PART_CORTEX_A8, armv7_a8_pmu_init),
-	ARM_PMU_PROBE(ARM_CPU_PART_CORTEX_A9, armv7_a9_pmu_init),
-	{ /* sentinel value */ }
-};
-
-
 static int armv7_pmu_device_probe(struct platform_device *pdev)
 {
-	return arm_pmu_device_probe(pdev, armv7_pmu_of_device_ids,
-				    armv7_pmu_probe_table);
+	return arm_pmu_device_probe(pdev, armv7_pmu_of_device_ids, NULL);
 }
 
 static struct platform_driver armv7_pmu_driver = {

-- 
2.43.0