From: Colin Cross <ccross@android.com>
To: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, "Rafael J. Wysocki" <rjw@sisk.pl>,
arve@android.com, Colin Cross <ccross@android.com>,
Al Viro <viro@zeniv.linux.org.uk>,
Andrew Morton <akpm@linux-foundation.org>,
Oleg Nesterov <oleg@redhat.com>,
"Eric W. Biederman" <ebiederm@xmission.com>,
Serge Hallyn <serge.hallyn@canonical.com>
Subject: [PATCH 09/10] sigtimedwait: use freezable blocking call
Date: Mon, 29 Apr 2013 14:45:45 -0700 [thread overview]
Message-ID: <1367271946-7239-10-git-send-email-ccross@android.com> (raw)
In-Reply-To: <1367271946-7239-1-git-send-email-ccross@android.com>
Avoid waking up every thread sleeping in a sigtimedwait call during
suspend and resume by calling a freezable blocking call.
Signed-off-by: Colin Cross <ccross@android.com>
---
kernel/signal.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/signal.c b/kernel/signal.c
index 598dc06..10a70a0 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -2845,7 +2845,7 @@ int do_sigtimedwait(const sigset_t *which, siginfo_t *info,
recalc_sigpending();
spin_unlock_irq(&tsk->sighand->siglock);
- timeout = schedule_timeout_interruptible(timeout);
+ timeout = freezable_schedule_timeout_interruptible(timeout);
spin_lock_irq(&tsk->sighand->siglock);
__set_task_blocked(tsk, &tsk->real_blocked);
--
1.8.2.1
next prev parent reply other threads:[~2013-04-29 21:45 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-29 21:45 [PATCH 00/10] optimize freezing tasks by reducing task wakeups Colin Cross
2013-04-29 21:45 ` [PATCH 01/10] freezer: shorten freezer sleep time using exponential backoff Colin Cross
2013-05-02 12:28 ` Pavel Machek
[not found] ` <1367271946-7239-1-git-send-email-ccross-z5hGa2qSFaRBDgjK7y7TUQ@public.gmane.org>
2013-04-29 21:45 ` [PATCH 02/10] freezer: skip waking up tasks with PF_FREEZER_SKIP set Colin Cross
[not found] ` <1367271946-7239-3-git-send-email-ccross-z5hGa2qSFaRBDgjK7y7TUQ@public.gmane.org>
2013-04-29 21:51 ` Tejun Heo
[not found] ` <20130429215157.GA2395-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org>
2013-04-29 21:57 ` Tejun Heo
2013-04-29 22:02 ` Colin Cross
[not found] ` <CAMbhsRQHkm=XTYtummEZq1h4sa-tRGwLpk8Uyhpj9D3+jQF3dg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-04-29 22:08 ` Tejun Heo
[not found] ` <20130429220831.GC2395-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org>
2013-04-29 22:16 ` Tejun Heo
2013-04-30 11:48 ` Rafael J. Wysocki
2013-04-30 17:10 ` Oleg Nesterov
2013-04-30 17:15 ` Oleg Nesterov
2013-04-29 21:45 ` [PATCH 03/10] freezer: add new freezable helpers using freezer_do_not_count() Colin Cross
2013-05-02 12:48 ` Pavel Machek
2013-05-02 13:05 ` Oliver Neukum
2013-05-02 13:46 ` Pavel Machek
2013-05-02 17:05 ` Colin Cross
2013-05-03 14:00 ` Pavel Machek
2013-04-29 21:45 ` [PATCH 04/10] binder: use freezable blocking calls Colin Cross
2013-04-29 21:45 ` [PATCH 05/10] epoll: use freezable blocking call Colin Cross
2013-04-29 21:45 ` [PATCH 06/10] select: " Colin Cross
2013-04-29 21:45 ` [PATCH 07/10] futex: " Colin Cross
2013-04-29 22:52 ` Darren Hart
2013-04-29 23:46 ` Colin Cross
2013-05-02 19:52 ` Matt Helsley
2013-04-29 21:45 ` [PATCH 08/10] nanosleep: " Colin Cross
2013-04-29 21:45 ` Colin Cross [this message]
2013-04-30 16:38 ` [PATCH 09/10] sigtimedwait: " Oleg Nesterov
2013-04-30 16:56 ` Oleg Nesterov
2013-04-30 16:58 ` Colin Cross
2013-04-30 17:00 ` Oleg Nesterov
2013-04-29 21:45 ` [PATCH 10/10] af_unix: use freezable blocking calls in read Colin Cross
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