31 lines
1.0 KiB
Diff
31 lines
1.0 KiB
Diff
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From 64b710a93390137b1a8a15bb39ac41d3a3820bed Mon Sep 17 00:00:00 2001
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From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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Date: Thu, 4 Feb 2016 16:38:10 +0100
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Subject: [PATCH 294/365] kernel/perf: mark perf_cpu_context's timer as irqsafe
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Otherwise we get a WARN_ON() backtrace and some events are reported as
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"not counted".
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Cc: stable-rt@vger.kernel.org
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Reported-by: Yang Shi <yang.shi@linaro.org>
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Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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---
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kernel/events/core.c | 1 +
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1 file changed, 1 insertion(+)
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diff --git a/kernel/events/core.c b/kernel/events/core.c
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index 6796d1faf3ae..94cd426d6826 100644
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--- a/kernel/events/core.c
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+++ b/kernel/events/core.c
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@@ -1072,6 +1072,7 @@ static void __perf_mux_hrtimer_init(struct perf_cpu_context *cpuctx, int cpu)
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raw_spin_lock_init(&cpuctx->hrtimer_lock);
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hrtimer_init(timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS_PINNED);
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timer->function = perf_mux_hrtimer_handler;
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+ timer->irqsafe = 1;
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}
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static int perf_mux_hrtimer_restart(struct perf_cpu_context *cpuctx)
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--
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2.28.0
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