From: Frederic Weisbecker <fweisbec@gmail.com>
To: Ingo Molnar <mingo@kernel.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
Frederic Weisbecker <fweisbec@gmail.com>,
Peter Zijlstra <peterz@infradead.org>,
Chris Metcalf <cmetcalf@mellanox.com>,
Thomas Gleixner <tglx@linutronix.de>,
Luiz Capitulino <lcapitulino@redhat.com>,
Christoph Lameter <cl@linux.com>,
"Paul E . McKenney" <paulmck@linux.vnet.ibm.com>,
Mike Galbraith <efault@gmx.de>, Rik van Riel <riel@redhat.com>,
Wanpeng Li <kernellwp@gmail.com>
Subject: [PATCH 02/12] watchdog: Use housekeeping_cpumask() instead of ad-hoc version
Date: Mon, 18 Sep 2017 15:53:59 +0200 [thread overview]
Message-ID: <1505742849-30473-3-git-send-email-fweisbec@gmail.com> (raw)
In-Reply-To: <1505742849-30473-1-git-send-email-fweisbec@gmail.com>
While trying to disable the watchog on nohz_full CPUs, the watchdog
implements an ad-hoc version of housekeeping_cpumask(). Lets replace
those re-invented lines.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Chris Metcalf <cmetcalf@mellanox.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Christoph Lameter <cl@linux.com>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Wanpeng Li <kernellwp@gmail.com>
Cc: Luiz Capitulino <lcapitulino@redhat.com>
---
kernel/watchdog.c | 11 +++--------
1 file changed, 3 insertions(+), 8 deletions(-)
diff --git a/kernel/watchdog.c b/kernel/watchdog.c
index 3cc5596..e672752 100644
--- a/kernel/watchdog.c
+++ b/kernel/watchdog.c
@@ -942,15 +942,10 @@ void __init lockup_detector_init(void)
{
set_sample_period();
-#ifdef CONFIG_NO_HZ_FULL
- if (tick_nohz_full_enabled()) {
+ if (tick_nohz_full_enabled())
pr_info("Disabling watchdog on nohz_full cores by default\n");
- cpumask_copy(&watchdog_cpumask, housekeeping_mask);
- } else
- cpumask_copy(&watchdog_cpumask, cpu_possible_mask);
-#else
- cpumask_copy(&watchdog_cpumask, cpu_possible_mask);
-#endif
+
+ cpumask_copy(&watchdog_cpumask, housekeeping_cpumask());
if (watchdog_enabled)
watchdog_enable_all_cpus();
--
2.7.4
next prev parent reply other threads:[~2017-09-18 13:54 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-18 13:53 [GIT PULL] Introduce housekeeping subsystem v4 Frederic Weisbecker
2017-09-18 13:53 ` [PATCH 01/12] housekeeping: Move housekeeping related code to its own file Frederic Weisbecker
2017-09-18 13:53 ` Frederic Weisbecker [this message]
2017-09-18 13:54 ` [PATCH 03/12] housekeeping: Provide a dynamic off-case to housekeeping_any_cpu() Frederic Weisbecker
2017-09-18 13:54 ` [PATCH 04/12] housekeeping: Make housekeeping cpumask private Frederic Weisbecker
2017-09-18 13:54 ` [PATCH 05/12] housekeeping: Use its own static key Frederic Weisbecker
2017-09-18 13:54 ` [PATCH 06/12] housekeeping: Rename is_housekeeping_cpu to housekeeping_cpu Frederic Weisbecker
2017-09-18 13:54 ` [PATCH 07/12] housekeeping: Move it under its own config, independant from NO_HZ Frederic Weisbecker
2017-09-18 13:54 ` [PATCH 08/12] housekeeping: Introduce housekeeping flags Frederic Weisbecker
2017-09-18 13:54 ` [PATCH 09/12] housekeeping: Handle nohz_full= parameter Frederic Weisbecker
2017-09-18 13:54 ` [PATCH 10/12] housekeeping: Move isolcpus to housekeeping Frederic Weisbecker
2017-09-18 13:54 ` [PATCH 11/12] housekeeping: Add basic isolcpus flags Frederic Weisbecker
2017-09-18 13:54 ` [PATCH 12/12] housekeeping: Document " Frederic Weisbecker
2017-09-28 9:54 ` [GIT PULL] Introduce housekeeping subsystem v4 Ingo Molnar
2017-09-29 13:34 ` Frederic Weisbecker
2017-10-01 6:36 ` Christopher Lameter
2017-10-15 15:53 ` Frederic Weisbecker
2017-10-20 8:17 ` Ingo Molnar
2017-10-20 14:29 ` Frederic Weisbecker
2017-10-21 16:07 ` Chris Metcalf
2017-10-23 12:06 ` Ingo Molnar
2017-10-24 2:42 ` Frederic Weisbecker
-- strict thread matches above, loose matches on Subject: below --
2017-10-27 2:42 [GIT PULL] Housekeeping subsystem v6 Frederic Weisbecker
2017-10-27 2:42 ` [PATCH 02/12] watchdog: Use housekeeping_cpumask() instead of ad-hoc version Frederic Weisbecker
2017-10-24 13:06 [GIT PULL] Introduce housekeeping subsystem v5 Frederic Weisbecker
2017-10-24 13:06 ` [PATCH 02/12] watchdog: Use housekeeping_cpumask() instead of ad-hoc version Frederic Weisbecker
2017-09-01 16:41 [PATCH 00/12] Introduce housekeeping subsystem v3 Frederic Weisbecker
2017-09-01 16:41 ` [PATCH 02/12] watchdog: Use housekeeping_cpumask() instead of ad-hoc version Frederic Weisbecker
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=1505742849-30473-3-git-send-email-fweisbec@gmail.com \
--to=fweisbec@gmail.com \
--cc=cl@linux.com \
--cc=cmetcalf@mellanox.com \
--cc=efault@gmx.de \
--cc=kernellwp@gmail.com \
--cc=lcapitulino@redhat.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@kernel.org \
--cc=paulmck@linux.vnet.ibm.com \
--cc=peterz@infradead.org \
--cc=riel@redhat.com \
--cc=tglx@linutronix.de \
/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
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
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).