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>,
Alexander Viro <viro@zeniv.linux.org.uk>,
linux-fsdevel@vger.kernel.org
Subject: [PATCH 06/10] select: use freezable blocking call
Date: Mon, 29 Apr 2013 14:45:42 -0700 [thread overview]
Message-ID: <1367271946-7239-7-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 select call during
suspend and resume by calling a freezable blocking call.
Signed-off-by: Colin Cross <ccross@android.com>
---
fs/select.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/fs/select.c b/fs/select.c
index 8c1c96c..6b14dc7 100644
--- a/fs/select.c
+++ b/fs/select.c
@@ -27,6 +27,7 @@
#include <linux/rcupdate.h>
#include <linux/hrtimer.h>
#include <linux/sched/rt.h>
+#include <linux/freezer.h>
#include <asm/uaccess.h>
@@ -236,7 +237,8 @@ int poll_schedule_timeout(struct poll_wqueues *pwq, int state,
set_current_state(state);
if (!pwq->triggered)
- rc = schedule_hrtimeout_range(expires, slack, HRTIMER_MODE_ABS);
+ rc = freezable_schedule_hrtimeout_range(expires, slack,
+ HRTIMER_MODE_ABS);
__set_current_state(TASK_RUNNING);
/*
--
1.8.2.1
next prev parent reply other threads:[~2013-04-29 21:46 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
2013-04-29 21:45 ` [PATCH 02/10] freezer: skip waking up tasks with PF_FREEZER_SKIP set Colin Cross
2013-04-29 21:51 ` Tejun Heo
2013-04-29 21:57 ` Tejun Heo
2013-04-29 22:02 ` Colin Cross
2013-04-29 22:08 ` Tejun Heo
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 ` Colin Cross [this message]
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 ` [PATCH 09/10] sigtimedwait: " Colin Cross
2013-04-30 16:38 ` 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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