sieni
/
linux
mirror of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

sched: Make __do_set_cpus_allowed() use the sched_change pattern 

Now that do_set_cpus_allowed() holds all the regular locks, convert it
to use the sched_change pattern helper.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Juri Lelli <juri.lelli@redhat.com>
Acked-by: Tejun Heo <tj@kernel.org>
Acked-by: Vincent Guittot <vincent.guittot@linaro.org>
This commit is contained in:
Peter Zijlstra 2025-09-09 13:16:23 +02:00
parent b079d93796
commit 650952d3fb
1 changed files with 5 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
kernel/sched/core.c
View File

@ -2664,28 +2664,12 @@ void set_cpus_allowed_common(struct task_struct *p, struct affinity_context *ctx
static void
do_set_cpus_allowed(struct task_struct *p, struct affinity_context *ctx)
{
struct rq *rq = task_rq(p);
bool queued, running;
u32 flags = DEQUEUE_SAVE | DEQUEUE_NOCLOCK;
lockdep_assert_held(&p->pi_lock);
lockdep_assert_rq_held(rq);
queued = task_on_rq_queued(p);
running = task_current_donor(rq, p);
if (queued)
dequeue_task(rq, p, DEQUEUE_SAVE | DEQUEUE_NOCLOCK);
if (running)
put_prev_task(rq, p);
p->sched_class->set_cpus_allowed(p, ctx);
mm_set_cpus_allowed(p->mm, ctx->new_mask);
if (queued)
enqueue_task(rq, p, ENQUEUE_RESTORE | ENQUEUE_NOCLOCK);
if (running)
set_next_task(rq, p);
scoped_guard (sched_change, p, flags) {
p->sched_class->set_cpus_allowed(p, ctx);
mm_set_cpus_allowed(p->mm, ctx->new_mask);
}
}
/*