From: Tejun Heo <tj@kernel.org>
To: Andrea Righi <arighi@nvidia.com>
Cc: David Vernet <void@manifault.com>,
Changwoo Min <changwoo@igalia.com>,
Joel Fernandes <joelagnelf@nvidia.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] sched_ext: Skip per-CPU tasks in scx_bpf_reenqueue_local()
Date: Thu, 13 Mar 2025 07:08:25 -1000 [thread overview]
Message-ID: <Z9MRCY0DwYrZOpkD@slm.duckdns.org> (raw)
In-Reply-To: <20250313170321.99510-1-arighi@nvidia.com>
On Thu, Mar 13, 2025 at 06:03:21PM +0100, Andrea Righi wrote:
> scx_bpf_reenqueue_local() can be invoked from ops.cpu_release() to give
> tasks that are queued to the local DSQ a chance to migrate to other
> CPUs, when a CPU is taken by a higher scheduling class.
>
> However, there is no point re-enqueuing tasks that can only run on that
> particular CPU, as they would simply be re-added to the same local DSQ
> without any benefit.
>
> Therefore, skip per-CPU tasks in scx_bpf_reenqueue_local().
>
> Signed-off-by: Andrea Righi <arighi@nvidia.com>
Applied to sched_ext/for-6.15.
Thanks.
--
tejun
prev parent reply other threads:[~2025-03-13 17:08 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-13 17:03 Andrea Righi
2025-03-13 17:08 ` Tejun Heo [this message]
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