From: Andrea Righi <arighi@nvidia.com>
To: Tejun Heo <tj@kernel.org>
Cc: David Vernet <void@manifault.com>,
Changwoo Min <changwoo@igalia.com>,
sched-ext@lists.linux.dev, linux-kernel@vger.kernel.org
Subject: Re: [PATCH sched_ext/for-6.18-fixes] sched_ext: Mark scx_bpf_dsq_move_set_[slice|vtime]() with KF_RCU
Date: Tue, 7 Oct 2025 07:06:16 +0200 [thread overview]
Message-ID: <aOSfyDN_7RuGc75j@gpd4> (raw)
In-Reply-To: <aORuaIXJftQDMBIA@slm.duckdns.org>
On Mon, Oct 06, 2025 at 03:35:36PM -1000, Tejun Heo wrote:
> scx_bpf_dsq_move_set_slice() and scx_bpf_dsq_move_set_vtime() take a DSQ
> iterator argument which has to be valid. Mark them with KF_RCU.
>
> Fixes: 4c30f5ce4f7a ("sched_ext: Implement scx_bpf_dispatch[_vtime]_from_dsq()")
> Cc: stable@vger.kernel.org # v6.12+
> Signed-off-by: Tejun Heo <tj@kernel.org>
Makes sense to me.
Acked-by: Andrea Righi <arighi@nvidia.com>
Thanks,
-Andrea
> ---
> kernel/sched/ext.c | 8 ++++----
> 1 file changed, 4 insertions(+), 4 deletions(-)
>
> --- a/kernel/sched/ext.c
> +++ b/kernel/sched/ext.c
> @@ -5688,8 +5688,8 @@ BTF_KFUNCS_START(scx_kfunc_ids_dispatch)
> BTF_ID_FLAGS(func, scx_bpf_dispatch_nr_slots)
> BTF_ID_FLAGS(func, scx_bpf_dispatch_cancel)
> BTF_ID_FLAGS(func, scx_bpf_dsq_move_to_local)
> -BTF_ID_FLAGS(func, scx_bpf_dsq_move_set_slice)
> -BTF_ID_FLAGS(func, scx_bpf_dsq_move_set_vtime)
> +BTF_ID_FLAGS(func, scx_bpf_dsq_move_set_slice, KF_RCU)
> +BTF_ID_FLAGS(func, scx_bpf_dsq_move_set_vtime, KF_RCU)
> BTF_ID_FLAGS(func, scx_bpf_dsq_move, KF_RCU)
> BTF_ID_FLAGS(func, scx_bpf_dsq_move_vtime, KF_RCU)
> BTF_KFUNCS_END(scx_kfunc_ids_dispatch)
> @@ -5820,8 +5820,8 @@ __bpf_kfunc_end_defs();
>
> BTF_KFUNCS_START(scx_kfunc_ids_unlocked)
> BTF_ID_FLAGS(func, scx_bpf_create_dsq, KF_SLEEPABLE)
> -BTF_ID_FLAGS(func, scx_bpf_dsq_move_set_slice)
> -BTF_ID_FLAGS(func, scx_bpf_dsq_move_set_vtime)
> +BTF_ID_FLAGS(func, scx_bpf_dsq_move_set_slice, KF_RCU)
> +BTF_ID_FLAGS(func, scx_bpf_dsq_move_set_vtime, KF_RCU)
> BTF_ID_FLAGS(func, scx_bpf_dsq_move, KF_RCU)
> BTF_ID_FLAGS(func, scx_bpf_dsq_move_vtime, KF_RCU)
> BTF_KFUNCS_END(scx_kfunc_ids_unlocked)
>
next prev parent reply other threads:[~2025-10-07 5:06 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-07 1:35 [PATCH sched_ext/for-6.18-fixes] sched_ext: Mark scx_bpf_dsq_move_set_[slice|vtime]() with KF_RCU Tejun Heo
2025-10-07 5:06 ` Andrea Righi [this message]
2025-10-13 18:13 ` Tejun Heo
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=aOSfyDN_7RuGc75j@gpd4 \
--to=arighi@nvidia.com \
--cc=changwoo@igalia.com \
--cc=linux-kernel@vger.kernel.org \
--cc=sched-ext@lists.linux.dev \
--cc=tj@kernel.org \
--cc=void@manifault.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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox