linux-kernel - [PATCH v2 2/5] perf: arm_cspmu: Support shared interrupts

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Message-Id: <20230601030144.3458136-3-ilkka@os.amperecomputing.com>
Date:   Wed, 31 May 2023 20:01:41 -0700
From:   Ilkka Koskinen <ilkka@...amperecomputing.com>
To:     Jonathan Corbet <corbet@....net>, Will Deacon <will@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Besar Wicaksono <bwicaksono@...dia.com>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Robin Murphy <robin.murphy@....com>
Cc:     linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        Ilkka Koskinen <ilkka@...amperecomputing.com>
Subject: [PATCH v2 2/5] perf: arm_cspmu: Support shared interrupts

Some of the PMUs may share the interrupt. Support them by
setting IRQF_SHARED

Signed-off-by: Ilkka Koskinen <ilkka@...amperecomputing.com>
---
 drivers/perf/arm_cspmu/arm_cspmu.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/perf/arm_cspmu/arm_cspmu.c b/drivers/perf/arm_cspmu/arm_cspmu.c
index 88547a2b73e6..cc5204d1b5fb 100644
--- a/drivers/perf/arm_cspmu/arm_cspmu.c
+++ b/drivers/perf/arm_cspmu/arm_cspmu.c
@@ -1067,8 +1067,8 @@ static int arm_cspmu_request_irq(struct arm_cspmu *cspmu)
 		return irq;
 
 	ret = devm_request_irq(dev, irq, arm_cspmu_handle_irq,
-			       IRQF_NOBALANCING | IRQF_NO_THREAD, dev_name(dev),
-			       cspmu);
+			       IRQF_NOBALANCING | IRQF_NO_THREAD | IRQF_SHARED,
+			       dev_name(dev), cspmu);
 	if (ret) {
 		dev_err(dev, "Could not request IRQ %d\n", irq);
 		return ret;
-- 
2.40.1