linux-kernel - [PATCH v7 4/9] drivers/perf: arm_pmu: Export the per_cpu cpu

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

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@...nel.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