LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: Don Zickus <dzickus@redhat.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Ingo Molnar <mingo@elte.hu>, LKML <linux-kernel@vger.kernel.org>,
	uobergfe@redhat.com, Don Zickus <dzickus@redhat.com>
Subject: [PATCH 3/9] watchdog: move definition of 'watchdog_proc_mutex' outside of proc_dowatchdog()
Date: Tue,  4 Nov 2014 11:20:18 -0500	[thread overview]
Message-ID: <1415118024-194247-4-git-send-email-dzickus@redhat.com> (raw)
In-Reply-To: <1415118024-194247-1-git-send-email-dzickus@redhat.com>

From: Ulrich Obergfell <uobergfe@redhat.com>

This series removes the proc_dowatchdog() function. Since multiple
new functions need the 'watchdog_proc_mutex' to serialize access to
the watchdog parameters in /proc/sys/kernel, move the mutex outside
of any function.

Signed-off-by: Ulrich Obergfell <uobergfe@redhat.com>
Signed-off-by: Don Zickus <dzickus@redhat.com>
---
 kernel/watchdog.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/kernel/watchdog.c b/kernel/watchdog.c
index dcf28b2..df4ef38 100644
--- a/kernel/watchdog.c
+++ b/kernel/watchdog.c
@@ -701,6 +701,8 @@ static int proc_watchdog_update(void)
 
 }
 
+static DEFINE_MUTEX(watchdog_proc_mutex);
+
 /*
  * proc handler for /proc/sys/kernel/nmi_watchdog,watchdog_thresh
  */
@@ -710,7 +712,6 @@ int proc_dowatchdog(struct ctl_table *table, int write,
 {
 	int err, old_thresh, old_enabled;
 	bool old_hardlockup;
-	static DEFINE_MUTEX(watchdog_proc_mutex);
 
 	mutex_lock(&watchdog_proc_mutex);
 	old_thresh = ACCESS_ONCE(watchdog_thresh);
-- 
1.7.1


  parent reply	other threads:[~2014-11-04 16:20 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-11-04 16:20 [PATCH 0/9] watchdog: internally split softlockup and hardlockup Don Zickus
2014-11-04 16:20 ` [PATCH 1/9] watchdog: new definitions and variables, initialization Don Zickus
2014-11-04 16:20 ` [PATCH 2/9] watchdog: introduce the proc_watchdog_update() function Don Zickus
2014-11-04 16:20 ` Don Zickus [this message]
2014-11-04 16:20 ` [PATCH 4/9] watchdog: introduce the proc_watchdog_common() function Don Zickus
2014-11-04 16:20 ` [PATCH 5/9] watchdog: introduce separate handlers for parameters in /proc/sys/kernel Don Zickus
2014-11-04 16:20 ` [PATCH 6/9] watchdog: implement error handling for failure to set up hardware perf events Don Zickus
2014-11-04 16:20 ` [PATCH 7/9] watchdog: enable the new user interface of the watchdog mechanism Don Zickus
2014-11-04 16:20 ` [PATCH 8/9] watchdog: clean up some function names and arguments Don Zickus
2014-11-04 16:20 ` [PATCH 9/9] watchdog: introduce the hardlockup_detector_disable() function Don Zickus
2014-12-17 21:25 ` [PATCH 0/9] watchdog: internally split softlockup and hardlockup Don Zickus
2015-01-21 14:15 ` Don Zickus
2015-01-21 22:23   ` Andrew Morton
2015-02-05 20:40 Don Zickus
2015-02-05 20:40 ` [PATCH 3/9] watchdog: move definition of 'watchdog_proc_mutex' outside of proc_dowatchdog() Don Zickus

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1415118024-194247-4-git-send-email-dzickus@redhat.com \
    --to=dzickus@redhat.com \
    --cc=akpm@linux-foundation.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mingo@elte.hu \
    --cc=uobergfe@redhat.com \
    --subject='Re: [PATCH 3/9] watchdog: move definition of '\''watchdog_proc_mutex'\'' outside of proc_dowatchdog()' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).