From: Peter Zijlstra <peterz@infradead.org>
To: Wangyang Guo <wangyang.guo@intel.com>
Cc: K Prateek Nayak <kprateek.nayak@amd.com>,
Ingo Molnar <mingo@redhat.com>,
Juri Lelli <juri.lelli@redhat.com>,
Vincent Guittot <vincent.guittot@linaro.org>,
Dietmar Eggemann <dietmar.eggemann@arm.com>,
Steven Rostedt <rostedt@goodmis.org>,
Ben Segall <bsegall@google.com>, Mel Gorman <mgorman@suse.de>,
Valentin Schneider <vschneid@redhat.com>,
linux-kernel@vger.kernel.org,
Shrikanth Hegde <sshegde@linux.ibm.com>,
Benjamin Lei <benjamin.lei@intel.com>,
Tim Chen <tim.c.chen@linux.intel.com>,
Tianyou Li <tianyou.li@intel.com>
Subject: Re: [PATCH v2] sched/clock: Avoid false sharing for sched_clock_irqtime
Date: Tue, 13 Jan 2026 11:07:55 +0100 [thread overview]
Message-ID: <20260113100755.GV830755@noisy.programming.kicks-ass.net> (raw)
In-Reply-To: <20260113074807.3404180-1-wangyang.guo@intel.com>
On Tue, Jan 13, 2026 at 03:48:07PM +0800, Wangyang Guo wrote:
> Read-mostly sched_clock_irqtime may share the same cacheline with
> frequently updated nohz struct. Mark it as __read_mostly to avoid
> false sharing issue.
>
Is there a reason that thing can't be a static_key or so?
next prev parent reply other threads:[~2026-01-13 10:08 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-13 7:48 Wangyang Guo
2026-01-13 9:01 ` Shrikanth Hegde
2026-01-13 10:07 ` Peter Zijlstra [this message]
2026-01-13 10:14 ` K Prateek Nayak
2026-01-13 10:14 ` Vincent Guittot
2026-01-13 10:36 ` Peter Zijlstra
2026-01-13 11:00 ` Vincent Guittot
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