linux-kernel - [PATCH v2 02/11] cpuidle: Fixup IRQ state

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Message-ID: <20200821085348.251340558@infradead.org>
Date:   Fri, 21 Aug 2020 10:47:40 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     linux-kernel@...r.kernel.org, mingo@...nel.org, will@...nel.org
Cc:     npiggin@...il.com, elver@...gle.com, jgross@...e.com,
        paulmck@...nel.org, rostedt@...dmis.org, rjw@...ysocki.net,
        joel@...lfernandes.org, svens@...ux.ibm.com, tglx@...utronix.de,
        peterz@...radead.org
Subject: [PATCH v2 02/11] cpuidle: Fixup IRQ state

Match the pattern elsewhere in this file.

Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Reviewed-by: Steven Rostedt (VMware) <rostedt@...dmis.org>
Tested-by: Marco Elver <elver@...gle.com>
---
 drivers/cpuidle/cpuidle.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/cpuidle/cpuidle.c
+++ b/drivers/cpuidle/cpuidle.c
@@ -153,7 +153,8 @@ static void enter_s2idle_proper(struct c
 	 */
 	stop_critical_timings();
 	drv->states[index].enter_s2idle(dev, drv, index);
-	WARN_ON(!irqs_disabled());
+	if (WARN_ON_ONCE(!irqs_disabled()))
+		local_irq_disable();
 	/*
 	 * timekeeping_resume() that will be called by tick_unfreeze() for the
 	 * first CPU executing it calls functions containing RCU read-side