linux-kernel - [tip:timers/urgent] posix-cpu-timers: Remove useless call to check_dl

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Message-ID: <tip-e6a2d72c10405b30ddba5af2e44a9d3d925a56d3@git.kernel.org>
Date:   Wed, 7 Nov 2018 22:45:51 -0800
From:   tip-bot for Juri Lelli <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     hpa@...or.com, mathieu.poirier@...aro.org, tglx@...utronix.de,
        rostedt@...dmis.org, bristot@...hat.com, claudio@...dence.eu.com,
        juri.lelli@...hat.com, peterz@...radead.org, mingo@...nel.org,
        linux-kernel@...r.kernel.org, luca.abeni@...tannapisa.it
Subject: [tip:timers/urgent] posix-cpu-timers: Remove useless call to
 check_dl_overrun()

Commit-ID:  e6a2d72c10405b30ddba5af2e44a9d3d925a56d3
Gitweb:     https://git.kernel.org/tip/e6a2d72c10405b30ddba5af2e44a9d3d925a56d3
Author:     Juri Lelli <juri.lelli@...hat.com>
AuthorDate: Wed, 7 Nov 2018 12:10:32 +0100
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Thu, 8 Nov 2018 07:43:35 +0100

posix-cpu-timers: Remove useless call to check_dl_overrun()

check_dl_overrun() is used to send a SIGXCPU to users that asked to be
informed when a SCHED_DEADLINE runtime overruns occur.

The function is called by check_thread_timers() already, so the call in
check_process_timers() is redundant/wrong (even though harmless).

Remove it.

Fixes: 34be39305a77 ("sched/deadline: Implement "runtime overrun signal" support")
Signed-off-by: Juri Lelli <juri.lelli@...hat.com>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Reviewed-by: Daniel Bristot de Oliveira <bristot@...hat.com>
Reviewed-by: Steven Rostedt (VMware) <rostedt@...dmis.org>
Cc: linux-rt-users@...r.kernel.org
Cc: mtk.manpages@...il.com
Cc: Mathieu Poirier <mathieu.poirier@...aro.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Luca Abeni <luca.abeni@...tannapisa.it>
Cc: Claudio Scordino <claudio@...dence.eu.com>
Link: https://lkml.kernel.org/r/20181107111032.32291-1-juri.lelli@redhat.com

---
 kernel/time/posix-cpu-timers.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/kernel/time/posix-cpu-timers.c b/kernel/time/posix-cpu-timers.c
index ce32cf741b25..8f0644af40be 100644
--- a/kernel/time/posix-cpu-timers.c
+++ b/kernel/time/posix-cpu-timers.c
@@ -917,9 +917,6 @@ static void check_process_timers(struct task_struct *tsk,
 	struct task_cputime cputime;
 	unsigned long soft;
 
-	if (dl_task(tsk))
-		check_dl_overrun(tsk);
-
 	/*
 	 * If cputimer is not running, then there are no active
 	 * process wide timers (POSIX 1.b, itimers, RLIMIT_CPU).