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From: Rob Herring <robh@kernel.org>
To: Will Deacon <will@kernel.org>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Ingo Molnar <mingo@redhat.com>,
	Arnaldo Carvalho de Melo <acme@kernel.org>,
	Jiri Olsa <jolsa@redhat.com>, Mark Rutland <mark.rutland@arm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>,
	honnappa.nagarahalli@arm.com, Zachary.Leaf@arm.com,
	Raphael Gault <raphael.gault@arm.com>,
	Jonathan Cameron <Jonathan.Cameron@huawei.com>,
	Namhyung Kim <namhyung@kernel.org>,
	Itaru Kitayama <itaru.kitayama@gmail.com>,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH v7 4/9] drivers/perf: arm_pmu: Export the per_cpu cpu_armpmu
Date: Mon, 19 Apr 2021 22:15:06 -0500	[thread overview]
Message-ID: <20210420031511.2348977-5-robh@kernel.org> (raw)
In-Reply-To: <20210420031511.2348977-1-robh@kernel.org>

The arm64 PMU driver needs to retrieve the struct arm_pmu pointer for
the current CPU. As the common code already maintains this with the
percpu cpu_armpmu, let's make it global.

Signed-off-by: Rob Herring <robh@kernel.org>
---
 drivers/perf/arm_pmu.c       | 2 +-
 include/linux/perf/arm_pmu.h | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/perf/arm_pmu.c b/drivers/perf/arm_pmu.c
index 2d10d84fb79c..6ac56280b9c7 100644
--- a/drivers/perf/arm_pmu.c
+++ b/drivers/perf/arm_pmu.c
@@ -99,7 +99,7 @@ static const struct pmu_irq_ops percpu_pmunmi_ops = {
 	.free_pmuirq = armpmu_free_percpu_pmunmi
 };
 
-static DEFINE_PER_CPU(struct arm_pmu *, cpu_armpmu);
+DEFINE_PER_CPU(struct arm_pmu *, cpu_armpmu);
 static DEFINE_PER_CPU(int, cpu_irq);
 static DEFINE_PER_CPU(const struct pmu_irq_ops *, cpu_irq_ops);
 
diff --git a/include/linux/perf/arm_pmu.h b/include/linux/perf/arm_pmu.h
index 63af052e3909..1daad3b2cce5 100644
--- a/include/linux/perf/arm_pmu.h
+++ b/include/linux/perf/arm_pmu.h
@@ -127,6 +127,8 @@ struct arm_pmu {
 
 #define to_arm_pmu(p) (container_of(p, struct arm_pmu, pmu))
 
+DECLARE_PER_CPU(struct arm_pmu *, cpu_armpmu);
+
 u64 armpmu_event_update(struct perf_event *event);
 
 int armpmu_event_set_period(struct perf_event *event);
-- 
2.27.0


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  parent reply	other threads:[~2021-04-20  3:18 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-20  3:15 [PATCH v7 0/9] arm64 userspace counter access support Rob Herring
2021-04-20  3:15 ` [PATCH v7 1/9] arm64: Restrict undef hook for cpufeature registers Rob Herring
2021-04-20  3:15 ` [PATCH v7 2/9] arm64: pmu: Add function implementation to update event index in userpage Rob Herring
2021-04-20  3:15 ` [PATCH v7 3/9] arm64: perf: Enable PMU counter direct access for perf event Rob Herring
2021-04-20  3:15 ` Rob Herring [this message]
2021-04-20  3:15 ` [PATCH v7 5/9] arm64: perf: Add userspace counter access disable switch Rob Herring
2021-04-20  3:15 ` [PATCH v7 6/9] libperf: Add arm64 support to perf_mmap__read_self() Rob Herring
2021-04-20  3:15 ` [PATCH v7 7/9] perf: arm64: Add test for userspace counter access on heterogeneous systems Rob Herring
2021-04-30 16:46   ` Masayoshi Mizuma
2021-04-30 18:17     ` Rob Herring
2021-04-30 18:20       ` Rob Herring
2021-04-30 20:16         ` Masayoshi Mizuma
2021-05-13  9:05   ` nakamura.shun
2021-05-13 12:37     ` Rob Herring
2021-04-20  3:15 ` [PATCH v7 8/9] perf: arm64: Add tests for 32-bit and 64-bit counter size userspace access Rob Herring
2021-04-20  3:15 ` [PATCH v7 9/9] Documentation: arm64: Document PMU counters access from userspace Rob Herring
2021-04-30 18:59 ` [PATCH v7 0/9] arm64 userspace counter access support Arnaldo Carvalho de Melo
2021-05-03 14:56   ` Rob Herring

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