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From: Tejun Heo <tj@kernel.org>
To: David Carlier <devnexen@gmail.com>
Cc: David Vernet <void@manifault.com>,
	linux-kernel@vger.kernel.org, emil@etsalapatis.com
Subject: Re: [PATCH] sched_ext: optimize sched_ext_entity layout for cache locality
Date: Tue, 24 Feb 2026 08:06:40 -1000	[thread overview]
Message-ID: <bb09b9c81974b64da6d3426cc36ebedd@kernel.org> (raw)
In-Reply-To: <20260224055637.16956-1-devnexen@gmail.com>

> Reorder struct sched_ext_entity to place ops_state, ddsp_dsq_id, and
> ddsp_enq_flags immediately after dsq. These fields are accessed together
> in the do_enqueue_task() and finish_dispatch() hot paths but were
> previously spread across three different cache lines. Grouping them on
> the same cache line reduces cache misses on every enqueue and dispatch
> operation.

Applied to sched_ext/for-7.1 with the subject line capitalized.

Thanks.

--
tejun

      parent reply	other threads:[~2026-02-24 18:06 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-02-24  5:56 [PATCH] sched_ext: optimize sched_ext_entity layout for cache locality David Carlier
2026-02-24 17:43 ` Tejun Heo
2026-02-24 18:24   ` David CARLIER
2026-02-24 18:06 ` Tejun Heo [this message]

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