From: Tejun Heo <tj@kernel.org>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org, David Vernet <void@manifault.com>,
Changwoo Min <changwoo@igalia.com>,
Andrea Righi <arighi@nvidia.com>
Subject: [GIT PULL] sched_ext: A fix for v6.14-rc4
Date: Wed, 26 Feb 2025 10:56:55 -1000 [thread overview]
Message-ID: <Z7-AF0Oi6TF24bl5@slm.duckdns.org> (raw)
The following changes since commit f5717c93a1b999970f3a64d771a1a9ee68cc37d0:
sched_ext: Use SCX_CALL_OP_TASK in task_tick_scx (2025-02-13 06:57:33 -1000)
are available in the Git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext.git/ tags/sched_ext-for-6.14-rc4-fixes
for you to fetch changes up to 8fef0a3b17bb258130a4fcbcb5addf94b25e9ec5:
sched_ext: Fix pick_task_scx() picking non-queued tasks when it's called without balance() (2025-02-25 08:28:52 -1000)
----------------------------------------------------------------
sched_ext: A fix for v6.14-rc4
pick_task_scx() has a workaround to avoid stalling when the fair class's
balance() says yes but pick_task() says no. The workaround was incorrectly
deciding to keep the prev taks running if the task is on SCX even when the
task is in a sleeping state, which can lead to several confusing failure
modes. Fix it by testing the prev task is currently queued on SCX instead.
----------------------------------------------------------------
Tejun Heo (1):
sched_ext: Fix pick_task_scx() picking non-queued tasks when it's called without balance()
kernel/sched/ext.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)
--
tejun
next reply other threads:[~2025-02-26 20:56 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-26 20:56 Tejun Heo [this message]
2025-02-26 22:25 ` pr-tracker-bot
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=Z7-AF0Oi6TF24bl5@slm.duckdns.org \
--to=tj@kernel.org \
--cc=arighi@nvidia.com \
--cc=changwoo@igalia.com \
--cc=linux-kernel@vger.kernel.org \
--cc=torvalds@linux-foundation.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
all inboxes | Powered by JetHome®