From: Tejun Heo <tj@kernel.org>
To: Andrea Righi <arighi@nvidia.com>
Cc: Kuba Piecuch <jpiecuch@google.com>,
David Vernet <void@manifault.com>,
Changwoo Min <changwoo@igalia.com>,
linux-kernel@vger.kernel.org, sched-ext@lists.linux.dev,
Peter Zijlstra <peterz@infradead.org>,
Wen-Fang Liu <liuwenfang@honor.com>
Subject: Re: [PATCH v3 3/3] sched_ext: Allow scx_bpf_reenqueue_local() to be called from anywhere
Date: Fri, 12 Dec 2025 15:18:35 -1000 [thread overview]
Message-ID: <aTy-69iu1wiqmW4y@slm.duckdns.org> (raw)
In-Reply-To: <aTy-fFNjiVfMZ-cP@gpd4>
On Sat, Dec 13, 2025 at 02:16:44AM +0100, Andrea Righi wrote:
> > That doesn't fix the ordering problem in the other direction, but the
> > reordering in the other direction seems inherently less useful at least.
> > Maybe this can also be solved with seq - ie. make enqueue record the current
> > seq, mark the DSQ with the latest reenqueue seq and at enqueue commit time
> > if the captured seq is alreaddy reenqueued, trigger reenqueue.
>
> How about making it even more explicit renaming the kfunc to something like
> scx_bpf_async_reenqueue_local() (and documenting it)?
I don't know. It's an implementation detail that can change in the future
and we don't want to be adding _async to e.g. scx_bpf_dsq_insert() too.
Thanks.
--
tejun
next prev parent reply other threads:[~2025-12-13 1:18 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-25 0:18 [PATCHSET sched_ext/for-6.19] sched_ext: Deprecate ops.cpu_acquire/release() Tejun Heo
2025-10-25 0:18 ` [PATCH 1/3] sched_ext: Split schedule_deferred() into locked and unlocked variants Tejun Heo
2025-10-25 23:17 ` Emil Tsalapatis
2025-10-25 0:18 ` [PATCH 2/3] sched_ext: Factor out reenq_local() from scx_bpf_reenqueue_local() Tejun Heo
2025-10-25 23:19 ` Emil Tsalapatis
2025-10-25 0:18 ` [PATCH 3/3] sched_ext: Allow scx_bpf_reenqueue_local() to be called from anywhere Tejun Heo
2025-10-25 23:21 ` Emil Tsalapatis
2025-10-27 9:18 ` Peter Zijlstra
2025-10-27 16:00 ` Tejun Heo
2025-10-27 17:49 ` Peter Zijlstra
2025-10-27 18:05 ` Tejun Heo
2025-10-27 18:07 ` Peter Zijlstra
2025-10-27 18:10 ` Peter Zijlstra
2025-10-27 18:17 ` Tejun Heo
2025-10-28 11:01 ` Peter Zijlstra
2025-10-28 17:07 ` Tejun Heo
2025-10-27 18:19 ` [PATCH v2 " Tejun Heo
2025-10-29 10:45 ` Peter Zijlstra
2025-10-29 15:11 ` Tejun Heo
2025-10-29 15:49 ` [PATCH v3 " Tejun Heo
2025-11-27 10:39 ` Kuba Piecuch
2025-12-02 23:05 ` Tejun Heo
2025-12-11 14:24 ` Kuba Piecuch
2025-12-11 16:17 ` Tejun Heo
2025-12-11 16:20 ` Tejun Heo
2025-12-13 1:16 ` Andrea Righi
2025-12-13 1:18 ` Tejun Heo [this message]
2025-10-29 15:31 ` [PATCHSET sched_ext/for-6.19] sched_ext: Deprecate ops.cpu_acquire/release() Tejun Heo
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