linux-kernel - [PATCH 1/2] arm64: Mark PMU interrupt IRQF_NO

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Message-Id: <1429628755-22492-2-git-send-email-anders.roxell@linaro.org>
Date:	Tue, 21 Apr 2015 17:05:54 +0200
From:	Anders Roxell <anders.roxell@...aro.org>
To:	catalin.marinas@....com, will.deacon@....com
Cc:	a.p.zijlstra@...llo.nl, paulus@...ba.org, mingo@...hat.com,
	acme@...nel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, khilman@...aro.org,
	steve.capper@...aro.org, Anders Roxell <anders.roxell@...aro.org>
Subject: [PATCH 1/2] arm64: Mark PMU interrupt IRQF_NO_THREAD

Mark the PMU interrupts as non-threadable, as is the case with
arch/arm: d9c3365 ARM: 7813/1: Mark pmu interupt IRQF_NO_THREAD

Suggested-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Signed-off-by: Anders Roxell <anders.roxell@...aro.org>
---
 arch/arm64/kernel/perf_event.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/kernel/perf_event.c b/arch/arm64/kernel/perf_event.c
index 195991d..7db5c84 100644
--- a/arch/arm64/kernel/perf_event.c
+++ b/arch/arm64/kernel/perf_event.c
@@ -488,7 +488,7 @@ armpmu_reserve_hardware(struct arm_pmu *armpmu)
 			}
 
 			err = request_irq(irq, armpmu->handle_irq,
-					IRQF_NOBALANCING,
+					IRQF_NOBALANCING | IRQF_NO_THREAD,
 					"arm-pmu", armpmu);
 			if (err) {
 				pr_err("unable to request IRQ%d for ARM PMU counters\n",
-- 
2.1.4

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