linux-kernel - [GIT PULL] sched_ext: Fixes for v6.12-rc2

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Message-ID: <ZwWLGKG4fsUYQyub@slm.duckdns.org>
Date: Tue, 8 Oct 2024 09:42:16 -1000
From: Tejun Heo <tj@...nel.org>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: linux-kernel@...r.kernel.org, David Vernet <void@...ifault.com>,
	sched-ext@...a.com, Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...hat.com>
Subject: [GIT PULL] sched_ext: Fixes for v6.12-rc2

The following changes since commit 95b873693a0841e02b812e693296a884362fdd51:

  sched_ext: Remove redundant p->nr_cpus_allowed checker (2024-09-27 10:23:45 -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-6.12-rc2-fixes

for you to fetch changes up to e0ed52154e866a1e9e9b97ded50b164698f0a222:

  sched_ext: Documentation: Update instructions for running example schedulers (2024-10-08 08:49:18 -1000)

----------------------------------------------------------------
sched_ext: Fixes for v6.12-rc2

- ops.enqueue() didn't have a way to tell whether select_task_rq_scx() and
  thus ops.select() were skipped. Some schedulers were incorrectly using
  SCX_ENQ_WAKEUP. Add SCX_ENQ_CPU_SELECTED and fix scx_qmap using it.

- Remove a spurious WARN_ON_ONCE() in scx_cgroup_exit().

- Fix error information clobbering during load.

- Add missing __weak markers to BPF helper declarations.

- Doc update.

----------------------------------------------------------------
Devaansh-Kumar (1):
      sched_ext: Documentation: Update instructions for running example schedulers

Tejun Heo (5):
      sched_ext: Improve error reporting during loading
      sched_ext: scx_cgroup_exit() may be called without successful scx_cgroup_init()
      sched/core: Make select_task_rq() take the pointer to wake_flags instead of value
      sched/core: Add ENQUEUE_RQ_SELECTED to indicate whether ->select_task_rq() was called
      sched_ext, scx_qmap: Add and use SCX_ENQ_CPU_SELECTED

Vishal Chourasia (1):
      sched_ext: Add __weak markers to BPF helper function decalarations

 Documentation/scheduler/sched-ext.rst    |  2 +-
 kernel/sched/core.c                      | 21 ++++++++++++++-------
 kernel/sched/ext.c                       | 32 ++++++++++++++++++++------------
 kernel/sched/sched.h                     |  3 +++
 tools/sched_ext/include/scx/common.bpf.h |  6 +++---
 tools/sched_ext/scx_qmap.bpf.c           |  4 ++--
 6 files changed, 43 insertions(+), 25 deletions(-)

-- 
tejun