linux-kernel - [tip:timers/core] timer: Use timer->base for flag checks

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:	Tue, 5 May 2015 01:42:34 -0700
From:	tip-bot for Joonwoo Park <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, john.stultz@...aro.org,
	tglx@...utronix.de, joonwoop@...eaurora.org, hpa@...or.com,
	mingo@...nel.org
Subject: [tip:timers/core] timer: Use timer->base for flag checks

Commit-ID:  781978e6e156101209f62b9ebc8783b70ef248de
Gitweb:     http://git.kernel.org/tip/781978e6e156101209f62b9ebc8783b70ef248de
Author:     Joonwoo Park <joonwoop@...eaurora.org>
AuthorDate: Mon, 27 Apr 2015 19:21:49 -0700
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Tue, 5 May 2015 10:40:43 +0200

timer: Use timer->base for flag checks

At present, internal_add_timer() examines flags with 'base' which doesn't
contain flags.  Examine with 'timer->base' to avoid unnecessary waking up
of nohz CPU when timer base has TIMER_DEFERRABLE set.

Signed-off-by: Joonwoo Park <joonwoop@...eaurora.org>
Cc: sboyd@...eaurora.org
Cc: skannan@...eaurora.org
Cc: John Stultz <john.stultz@...aro.org>
Link: http://lkml.kernel.org/r/1430187709-21087-1-git-send-email-joonwoop@codeaurora.org
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
---
 kernel/time/timer.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/time/timer.c b/kernel/time/timer.c
index 03f926c..d4af7c5 100644
--- a/kernel/time/timer.c
+++ b/kernel/time/timer.c
@@ -436,7 +436,7 @@ static void internal_add_timer(struct tvec_base *base, struct timer_list *timer)
 	 * require special care against races with idle_cpu(), lets deal
 	 * with that later.
 	 */
-	if (!tbase_get_deferrable(base) || tick_nohz_full_cpu(base->cpu))
+	if (!tbase_get_deferrable(timer->base) || tick_nohz_full_cpu(base->cpu))
 		wake_up_nohz_cpu(base->cpu);
 }
 
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/