[GIT PULL] sched_ext: Fixes for v6.17-rc7

[GIT PULL] sched_ext: Fixes for v6.17-rc7

[Tejun Heo]

The following changes since commit a1eab4d813f7b6e606ed21381b8cfda5c59a87e5:

  sched_ext, sched/core: Fix build failure when !FAIR_GROUP_SCHED && EXT_GROUP_SCHED (2025-09-16 23:07:27 -1000)

are available in the Git repository at:

  https://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext.git tags/sched_ext-for-6.17-rc7-fixes

for you to fetch changes up to 55ed11b181c43d81ce03b50209e4e7c4a14ba099:

  sched_ext: idle: Handle migration-disabled tasks in BPF code (2025-09-22 06:24:44 -1000)

----------------------------------------------------------------
sched_ext: Fixes for v6.17-rc7

This contains a fix for sched_ext idle CPU selection that likely fixes
a substantial performance regression.

The scx_bpf_select_cpu_dfl/and() kfuncs were incorrectly detecting all
tasks as migration-disabled when called outside ops.select_cpu(), causing
them to always return -EBUSY instead of finding idle CPUs. The fix properly
distinguishes between genuinely migration-disabled tasks vs. the current
task whose migration is temporarily disabled by BPF execution.

----------------------------------------------------------------
Andrea Righi (1):
      sched_ext: idle: Handle migration-disabled tasks in BPF code

 kernel/sched/ext_idle.c | 28 +++++++++++++++++++++++++++-
 1 file changed, 27 insertions(+), 1 deletion(-)

-- 
tejun

Re: [GIT PULL] sched_ext: Fixes for v6.17-rc7

[pr-tracker-bot]

The pull request you sent on Mon, 22 Sep 2025 06:49:54 -1000:

> https://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext.git tags/sched_ext-for-6.17-rc7-fixes

has been merged into torvalds/linux.git:
https://git.kernel.org/torvalds/c/cec1e6e5d1ab33403b809f79cd20d6aff124ccfe

Thank you!

-- 
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/prtracker.html

Re: [GIT PULL] sched_ext: Fixes for v6.17-rc7

[Linus Torvalds]

On Mon, 22 Sept 2025 at 09:49, Tejun Heo <tj@kernel.org> wrote:
>
> sched_ext: Fixes for v6.17-rc7

Oops, and people point out that I have renamed you in the merge commit
message due to a messed-up editing error.

As I removed the "es" from the "fixes", I apparently also removed the
"Te" from "Tejun".

So now you are officially just "jun Heo". Sorry about that.

          Linus

Re: [GIT PULL] sched_ext: Fixes for v6.17-rc7

[Tejun Heo]

On Tue, Sep 23, 2025 at 08:12:37AM -0700, Linus Torvalds wrote:
> On Mon, 22 Sept 2025 at 09:49, Tejun Heo <tj@kernel.org> wrote:
> >
> > sched_ext: Fixes for v6.17-rc7
> 
> Oops, and people point out that I have renamed you in the merge commit
> message due to a messed-up editing error.
> 
> As I removed the "es" from the "fixes", I apparently also removed the
> "Te" from "Tejun".
> 
> So now you are officially just "jun Heo". Sorry about that.

No worries. As long as you don't swap e and o in the last name, it's all
good.

-- 
tejun

Re: [GIT PULL] sched_ext: Fixes for v6.17-rc7

[Linus Torvalds]

On Tue, 23 Sept 2025 at 08:15, Tejun Heo <tj@kernel.org> wrote:
>
> No worries. As long as you don't swap e and o in the last name, it's all
> good.

It's a perfectly good garden implement, I'll have you know.

But I'm sorry that I have now caused you to have to stand in line at
the DMV for hours just to get your new name changed on your driver's
license.

Annoying, I know, but it has to be done.

            Linus