From: Anshuman Khandual <anshuman.khandual@arm.com>
To: linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org,
peterz@infradead.org
Cc: Anshuman Khandual <anshuman.khandual@arm.com>,
Will Deacon <will@kernel.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Ingo Molnar <mingo@redhat.com>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Jiri Olsa <jolsa@kernel.org>, Namhyung Kim <namhyung@kernel.org>,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH 2/3] arm64/perf: Assert all platform event flags are within PERF_EVENT_FLAG_ARCH
Date: Mon, 29 Aug 2022 12:25:06 +0530 [thread overview]
Message-ID: <20220829065507.177781-3-anshuman.khandual@arm.com> (raw)
In-Reply-To: <20220829065507.177781-1-anshuman.khandual@arm.com>
Ensure all platform specific event flags are within PERF_EVENT_FLAG_ARCH.
Cc: Will Deacon <will@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-perf-users@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
---
arch/arm64/kernel/perf_event.c | 1 +
drivers/perf/apple_m1_cpu_pmu.c | 1 +
drivers/perf/arm_spe_pmu.c | 1 +
3 files changed, 3 insertions(+)
diff --git a/arch/arm64/kernel/perf_event.c b/arch/arm64/kernel/perf_event.c
index cb69ff1e6138..cf9cedb07f92 100644
--- a/arch/arm64/kernel/perf_event.c
+++ b/arch/arm64/kernel/perf_event.c
@@ -1390,6 +1390,7 @@ static struct platform_driver armv8_pmu_driver = {
static int __init armv8_pmu_driver_init(void)
{
+ BUILD_BUG_ON(~PERF_EVENT_FLAG_ARCH & ARMPMU_EVT_64BIT);
if (acpi_disabled)
return platform_driver_register(&armv8_pmu_driver);
else
diff --git a/drivers/perf/apple_m1_cpu_pmu.c b/drivers/perf/apple_m1_cpu_pmu.c
index 979a7c2b4f56..9ec8c694d0f2 100644
--- a/drivers/perf/apple_m1_cpu_pmu.c
+++ b/drivers/perf/apple_m1_cpu_pmu.c
@@ -568,6 +568,7 @@ MODULE_DEVICE_TABLE(of, m1_pmu_of_device_ids);
static int m1_pmu_device_probe(struct platform_device *pdev)
{
+ BUILD_BUG_ON(~PERF_EVENT_FLAG_ARCH & ARMPMU_EVT_47BIT);
return arm_pmu_device_probe(pdev, m1_pmu_of_device_ids, NULL);
}
diff --git a/drivers/perf/arm_spe_pmu.c b/drivers/perf/arm_spe_pmu.c
index b65a7d9640e1..74344abf4b11 100644
--- a/drivers/perf/arm_spe_pmu.c
+++ b/drivers/perf/arm_spe_pmu.c
@@ -1276,6 +1276,7 @@ static int __init arm_spe_pmu_init(void)
if (ret)
cpuhp_remove_multi_state(arm_spe_pmu_online);
+ BUILD_BUG_ON(~PERF_EVENT_FLAG_ARCH & SPE_PMU_HW_FLAGS_CX);
return ret;
}
--
2.25.1
next prev parent reply other threads:[~2022-08-29 6:55 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-29 6:55 [PATCH 0/3] perf/core: Assert PERF_EVENT_FLAG_ARCH is followed Anshuman Khandual
2022-08-29 6:55 ` [PATCH 1/3] perf/core: Assert PERF_EVENT_FLAG_ARCH does not overlap with generic flags Anshuman Khandual
2022-08-29 6:55 ` Anshuman Khandual [this message]
2022-08-29 6:55 ` [PATCH 3/3] x86/perf: Assert all platform event flags are within PERF_EVENT_FLAG_ARCH Anshuman Khandual
2022-08-30 10:00 ` James Clark
2022-09-05 4:05 ` Anshuman Khandual
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