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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2021-01-24 10:09:20 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-01-24 10:09:20 -0800 |
| commit | 24c56ee06c4d4b410ac1d248869c14e391d66b8c (patch) | |
| tree | 508e2083b44a4f989ece1ea5f0e71d5f1834bd49 /include | |
| parent | 025929f46813c572d4ef0b379c704bf664e8a7a3 (diff) | |
| parent | 741ba80f6f9a4702089c122129f22df9774b3e64 (diff) | |
| download | linux-24c56ee06c4d4b410ac1d248869c14e391d66b8c.tar.bz2 | |
Merge tag 'sched_urgent_for_v5.11_rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fixes from Borislav Petkov:
- Correct the marking of kthreads which are supposed to run on a
specific, single CPU vs such which are affine to only one CPU, mark
per-cpu workqueue threads as such and make sure that marking
"survives" CPU hotplug. Fix CPU hotplug issues with such kthreads.
- A fix to not push away tasks on CPUs coming online.
- Have workqueue CPU hotplug code use cpu_possible_mask when breaking
affinity on CPU offlining so that pending workers can finish on newly
arrived onlined CPUs too.
- Dump tasks which haven't vacated a CPU which is currently being
unplugged.
- Register a special scale invariance callback which gets called on
resume from RAM to read out APERF/MPERF after resume and thus make
the schedutil scaling governor more precise.
* tag 'sched_urgent_for_v5.11_rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched: Relax the set_cpus_allowed_ptr() semantics
sched: Fix CPU hotplug / tighten is_per_cpu_kthread()
sched: Prepare to use balance_push in ttwu()
workqueue: Restrict affinity change to rescuer
workqueue: Tag bound workers with KTHREAD_IS_PER_CPU
kthread: Extract KTHREAD_IS_PER_CPU
sched: Don't run cpu-online with balance_push() enabled
workqueue: Use cpu_possible_mask instead of cpu_active_mask to break affinity
sched/core: Print out straggler tasks in sched_cpu_dying()
x86: PM: Register syscore_ops for scale invariance
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/kthread.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/kthread.h b/include/linux/kthread.h index 65b81e0c494d..2484ed97e72f 100644 --- a/include/linux/kthread.h +++ b/include/linux/kthread.h @@ -33,6 +33,9 @@ struct task_struct *kthread_create_on_cpu(int (*threadfn)(void *data), unsigned int cpu, const char *namefmt); +void kthread_set_per_cpu(struct task_struct *k, int cpu); +bool kthread_is_per_cpu(struct task_struct *k); + /** * kthread_run - create and wake a thread. * @threadfn: the function to run until signal_pending(current). |