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Message-Id: <20230811170049.308866-9-frederic@kernel.org>
Date: Fri, 11 Aug 2023 19:00:47 +0200
From: Frederic Weisbecker <frederic@...nel.org>
To: LKML <linux-kernel@...r.kernel.org>
Cc: Frederic Weisbecker <frederic@...nel.org>,
Peter Zijlstra <peterz@...radead.org>,
"Rafael J . Wysocki" <rafael@...nel.org>,
Daniel Lezcano <daniel.lezcano@...aro.org>,
Thomas Gleixner <tglx@...utronix.de>,
Anna-Maria Behnsen <anna-maria@...utronix.de>
Subject: [PATCH 08/10] x86: Remove __current_clr_polling() from mwait_idle()
mwait_idle() is only ever called through by cpuidle, either from
default_idle_call() or from cpuidle_enter(). In any case
cpuidle_idle_call() sets again TIF_NR_POLLING after calling it so there
is no point for this atomic operation upon idle exit.
Signed-off-by: Frederic Weisbecker <frederic@...nel.org>
---
arch/x86/kernel/process.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
index 72015dba72ab..f1eb769770b1 100644
--- a/arch/x86/kernel/process.c
+++ b/arch/x86/kernel/process.c
@@ -918,7 +918,6 @@ static __cpuidle void mwait_idle(void)
raw_local_irq_disable();
}
}
- __current_clr_polling();
}
void select_idle_routine(const struct cpuinfo_x86 *c)
--
2.34.1
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