From: Yury Norov <yury.norov@gmail.com>
To: linux-kernel@vger.kernel.org, John Stultz <jstultz@google.com>,
Thomas Gleixner <tglx@linutronix.de>,
Stephen Boyd <sboyd@kernel.org>
Cc: "Yury Norov [NVIDIA]" <yury.norov@gmail.com>
Subject: [PATCH 2/2] clocksource: fix opencoded cpumask_next_wrap()
Date: Wed, 4 Jun 2025 19:25:48 -0400 [thread overview]
Message-ID: <20250604232550.40491-3-yury.norov@gmail.com> (raw)
In-Reply-To: <20250604232550.40491-1-yury.norov@gmail.com>
From: Yury Norov [NVIDIA] <yury.norov@gmail.com>
cpumask_next_wrap() is more verbose and efficient comparing to
cpumask_next() followed by cpumask_first().
Signed-off-by: Yury Norov [NVIDIA] <yury.norov@gmail.com>
---
kernel/time/clocksource.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/kernel/time/clocksource.c b/kernel/time/clocksource.c
index 2e24ce884272..0aef0e349e49 100644
--- a/kernel/time/clocksource.c
+++ b/kernel/time/clocksource.c
@@ -584,9 +584,7 @@ static void clocksource_watchdog(struct timer_list *unused)
* Cycle through CPUs to check if the CPUs stay synchronized
* to each other.
*/
- next_cpu = cpumask_next(raw_smp_processor_id(), cpu_online_mask);
- if (next_cpu >= nr_cpu_ids)
- next_cpu = cpumask_first(cpu_online_mask);
+ next_cpu = cpumask_next_wrap(raw_smp_processor_id(), cpu_online_mask);
/*
* Arm timer if not already pending: could race with concurrent
--
2.43.0
next prev parent reply other threads:[~2025-06-04 23:25 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-04 23:25 [PATCH 0/2] clocksource: use better cpumask API where appropriate Yury Norov
2025-06-04 23:25 ` [PATCH 1/2] clocksource: fix opencoded cpumask_any_but() in clocksource_verify_choose_cpus() Yury Norov
2025-06-05 18:13 ` John Stultz
2025-06-04 23:25 ` Yury Norov [this message]
2025-06-05 18:11 ` [PATCH 2/2] clocksource: fix opencoded cpumask_next_wrap() John Stultz
2025-06-07 14:11 [PATCH 0/2] clocksource: Use better cpumask API where appropriate Yury Norov
2025-06-07 14:11 ` [PATCH 2/2] clocksource: Fix opencoded cpumask_next_wrap() Yury Norov
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=20250604232550.40491-3-yury.norov@gmail.com \
--to=yury.norov@gmail.com \
--cc=jstultz@google.com \
--cc=linux-kernel@vger.kernel.org \
--cc=sboyd@kernel.org \
--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
all inboxes | Powered by JetHome®