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Message-ID: <877cgyve5t.fsf@somnus>
Date: Mon, 15 Apr 2024 17:28:14 +0200
From: Anna-Maria Behnsen <anna-maria@...utronix.de>
To: Thomas Gleixner <tglx@...utronix.de>, LKML <linux-kernel@...r.kernel.org>
Cc: Frederic Weisbecker <frederic@...nel.org>, John Stultz
<jstultz@...gle.com>, Peter Zijlstra <peterz@...radead.org>, Ingo Molnar
<mingo@...nel.org>, Stephen Boyd <sboyd@...nel.org>, Eric Biederman
<ebiederm@...ssion.com>, Oleg Nesterov <oleg@...hat.com>
Subject: Re: [patch V2 16/50] posix-cpu-timers: Simplify posix_cpu_timer_set()
Thomas Gleixner <tglx@...utronix.de> writes:
> Avoid the late sighand lock/unlock dance when a timer is not armed to
> enforce reevaluation of the timer base so that the process wide CPU timer
> sampling can be disabled.
>
> Do it right at the point where the arming decision is made which already
> has sighand locked.
>
Reviewed-by: Anna-Maria Behnsen <anna-maria@...utronix.de>
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