From: Peter Zijlstra <peterz@infradead.org>
To: Mel Gorman <mgorman@techsingularity.net>
Cc: linux-kernel@vger.kernel.org, Ingo Molnar <mingo@redhat.com>,
Juri Lelli <juri.lelli@redhat.com>,
Dietmar Eggemann <dietmar.eggemann@arm.com>,
Valentin Schneider <vschneid@redhat.com>,
Chris Mason <clm@meta.com>
Subject: Re: [PATCH 2/2] sched/fair: Reimplement NEXT_BUDDY to align with EEVDF goals
Date: Tue, 28 Oct 2025 16:09:51 +0100 [thread overview]
Message-ID: <20251028150951.GD4067720@noisy.programming.kicks-ass.net> (raw)
In-Reply-To: <20251027133915.4103633-3-mgorman@techsingularity.net>
On Mon, Oct 27, 2025 at 01:39:15PM +0000, Mel Gorman wrote:
> +enum preempt_wakeup_action {
> + PREEMPT_WAKEUP_NONE, /* No action on the buddy */
> + PREEMPT_WAKEUP_NEXT, /* Check next is most eligible
> + * before rescheduling.
> + */
> + PREEMPT_WAKEUP_RESCHED, /* Plain reschedule */
> +};
In pre-existing code that isn't modified by this patch, we have:
if (do_preempt_short)
Which seems to hard rely on PREEMPT_WAKEUP_NONE being 0, please make
that explicit in the enum above.
next prev parent reply other threads:[~2025-10-28 15:09 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20251027133915.4103633-1-mgorman@techsingularity.net>
2025-10-27 13:39 ` [PATCH 1/2] sched/fair: Enable scheduler feature NEXT_BUDDY Mel Gorman
2025-10-28 14:37 ` Peter Zijlstra
2025-10-27 13:39 ` [PATCH 2/2] sched/fair: Reimplement NEXT_BUDDY to align with EEVDF goals Mel Gorman
2025-10-28 15:05 ` Peter Zijlstra
2025-10-31 9:46 ` Mel Gorman
2025-10-28 15:09 ` Peter Zijlstra [this message]
2025-10-31 9:48 ` Mel Gorman
2025-10-28 15:33 ` Peter Zijlstra
2025-10-28 15:47 ` Peter Zijlstra
2025-10-30 9:10 ` Peter Zijlstra
2025-10-31 10:27 ` Mel Gorman
2025-11-12 12:25 [PATCH 0/2 v5] Reintroduce NEXT_BUDDY for EEVDF Mel Gorman
[not found] ` <20251112122521.1331238-3-mgorman@techsingularity.net>
2025-11-12 14:48 ` [PATCH 2/2] sched/fair: Reimplement NEXT_BUDDY to align with EEVDF goals Peter Zijlstra
2025-11-13 8:26 ` Madadi Vineeth Reddy
2025-11-13 9:04 ` Mel Gorman
2025-11-14 12:13 ` Peter Zijlstra
-- strict thread matches above, loose matches on Subject: below --
2025-11-03 11:04 [PATCH 0/2 v4] Reintroduce NEXT_BUDDY for EEVDF Mel Gorman
2025-11-03 11:04 ` [PATCH 2/2] sched/fair: Reimplement NEXT_BUDDY to align with EEVDF goals Mel Gorman
2025-11-03 14:07 ` Peter Zijlstra
2025-11-03 14:14 ` Peter Zijlstra
2025-11-05 21:48 ` Madadi Vineeth Reddy
2025-11-07 8:53 ` Mel Gorman
2025-10-21 14:28 [RFC PATCH 0/2] Reintroduce NEXT_BUDDY for EEVDF v2 Mel Gorman
2025-10-21 14:28 ` [PATCH 2/2] sched/fair: Reimplement NEXT_BUDDY to align with EEVDF goals Mel Gorman
2025-10-23 6:29 ` K Prateek Nayak
[not found] <20250714134429.19624-1-mgorman@techsingularity.net>
2025-07-14 13:44 ` Mel Gorman
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=20251028150951.GD4067720@noisy.programming.kicks-ass.net \
--to=peterz@infradead.org \
--cc=clm@meta.com \
--cc=dietmar.eggemann@arm.com \
--cc=juri.lelli@redhat.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mgorman@techsingularity.net \
--cc=mingo@redhat.com \
--cc=vschneid@redhat.com \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.