[PATCH 10/10] ARM: Use common uncore PMU capabilities

From: Robin Murphy <robin.murphy@arm.com>
To: Peter Zijlstra <peterz@infradead.org>,
	Ingo Molnar <mingo@redhat.com>,
	Arnaldo Carvalho de Melo <acme@kernel.org>,
	Namhyung Kim <namhyung@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	Will Deacon <will@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>,
	Jiri Olsa <jolsa@kernel.org>, Ian Rogers <irogers@google.com>,
	Adrian Hunter <adrian.hunter@intel.com>,
	linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org, x86@kernel.org,
	linux-perf-users@vger.kernel.org, jialong.yang@shingroup.cn,
	Russell King <linux@armlinux.org.uk>,
	Shawn Guo <shawnguo@kernel.org>,
	Sascha Hauer <s.hauer@pengutronix.de>
Subject: [PATCH 10/10] ARM: Use common uncore PMU capabilities
Date: Tue, 12 Mar 2024 17:34:12 +0000	[thread overview]
Message-ID: <de2646ca1d333cd9286f22ed3a5e8d57d22833b1.1710257512.git.robin.murphy@arm.com> (raw)
In-Reply-To: <cover.1710257512.git.robin.murphy@arm.com>

Switch the ARM system PMU drivers over to the new common capabilities,
allowing to remove all the checks that perf core now takes care of.

CC: Russell King <linux@armlinux.org.uk>
CC: Shawn Guo <shawnguo@kernel.org>
CC: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
---
 arch/arm/mach-imx/mmdc.c     | 16 +---------------
 arch/arm/mm/cache-l2x0-pmu.c | 12 +-----------
 2 files changed, 2 insertions(+), 26 deletions(-)

diff --git a/arch/arm/mach-imx/mmdc.c b/arch/arm/mach-imx/mmdc.c
index 444a7eaa320c..806ab6675b37 100644
--- a/arch/arm/mach-imx/mmdc.c
+++ b/arch/arm/mach-imx/mmdc.c
@@ -280,20 +280,6 @@ static int mmdc_pmu_event_init(struct perf_event *event)
 	struct mmdc_pmu *pmu_mmdc = to_mmdc_pmu(event->pmu);
 	int cfg = event->attr.config;
 
-	if (event->attr.type != event->pmu->type)
-		return -ENOENT;
-
-	if (is_sampling_event(event) || event->attach_state & PERF_ATTACH_TASK)
-		return -EOPNOTSUPP;
-
-	if (event->cpu < 0) {
-		dev_warn(pmu_mmdc->dev, "Can't provide per-task data!\n");
-		return -EOPNOTSUPP;
-	}
-
-	if (event->attr.sample_period)
-		return -EINVAL;
-
 	if (cfg < 0 || cfg >= MMDC_NUM_COUNTERS)
 		return -EINVAL;
 
@@ -445,7 +431,7 @@ static int mmdc_pmu_init(struct mmdc_pmu *pmu_mmdc,
 			.start          = mmdc_pmu_event_start,
 			.stop           = mmdc_pmu_event_stop,
 			.read           = mmdc_pmu_event_update,
-			.capabilities	= PERF_PMU_CAP_NO_EXCLUDE,
+			.capabilities	= PERF_PMU_UNCORE_CAPS,
 		},
 		.mmdc_base = mmdc_base,
 		.dev = dev,
diff --git a/arch/arm/mm/cache-l2x0-pmu.c b/arch/arm/mm/cache-l2x0-pmu.c
index 993fefdc167a..a2567d953fdb 100644
--- a/arch/arm/mm/cache-l2x0-pmu.c
+++ b/arch/arm/mm/cache-l2x0-pmu.c
@@ -295,16 +295,6 @@ static int l2x0_pmu_event_init(struct perf_event *event)
 {
 	struct hw_perf_event *hw = &event->hw;
 
-	if (event->attr.type != l2x0_pmu->type)
-		return -ENOENT;
-
-	if (is_sampling_event(event) ||
-	    event->attach_state & PERF_ATTACH_TASK)
-		return -EINVAL;
-
-	if (event->cpu < 0)
-		return -EINVAL;
-
 	if (event->attr.config & ~L2X0_EVENT_CNT_CFG_SRC_MASK)
 		return -EINVAL;
 
@@ -524,7 +514,7 @@ static __init int l2x0_pmu_init(void)
 		.del = l2x0_pmu_event_del,
 		.event_init = l2x0_pmu_event_init,
 		.attr_groups = l2x0_pmu_attr_groups,
-		.capabilities = PERF_PMU_CAP_NO_EXCLUDE,
+		.capabilities = PERF_PMU_UNCORE_CAPS,
 	};
 
 	l2x0_pmu_reset();
-- 
2.39.2.101.g768bb238c484.dirty

