From: Peter Zijlstra <peterz@infradead.org>
To: I Hsin Cheng <richard120310@gmail.com>
Cc: mingo@redhat.com, juri.lelli@redhat.com,
vincent.guittot@linaro.org, dietmar.eggemann@arm.com,
rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de,
vschneid@redhat.com, linux-kernel@vger.kernel.org
Subject: Re: [RFC PATCH] sched/fair: Refactor can_migrate_task() to elimate looping
Date: Thu, 9 Jan 2025 11:21:22 +0100 [thread overview]
Message-ID: <20250109102122.GQ20870@noisy.programming.kicks-ass.net> (raw)
In-Reply-To: <Z3-hBiGVJT-R4iuZ@vaxr-BM6660-BM6360>
On Thu, Jan 09, 2025 at 06:12:22PM +0800, I Hsin Cheng wrote:
> > > Except you cannot put cpumask on-stack...
>
> Oh I'm sorry, may I ask the reason? is it because cpumask tends to be
> very large?
Yes, when building with NR_CPUS=8192 (as Distos tend to do) it is 1K of
stack space.
next prev parent reply other threads:[~2025-01-09 10:21 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-01-08 17:29 [RFC PATCH] sched/fair: Refactor can_migrate_task() to elimate looping I Hsin Cheng
2025-01-09 8:58 ` Nysal Jan K.A.
2025-01-09 10:19 ` I Hsin Cheng
2025-01-09 9:46 ` Peter Zijlstra
2025-01-09 10:12 ` I Hsin Cheng
2025-01-09 10:21 ` Peter Zijlstra [this message]
2025-01-09 15:23 ` I Hsin Cheng
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