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sched/core: Swap the order between sched_post_fork() and cgroup_post_fork() 

The planned sched_ext cgroup sub-scheduler support needs the newly forked
task to be associated with its cgroup in its post_fork() hook. There is no
existing ordering requirement between the two now. Swap them and note the
new ordering requirement.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Andrea Righi <arighi@nvidia.com>
Cc: Ingo Molnar <mingo@redhat.com>
master
Tejun Heo 2026-03-06 07:58:02 -10:00
parent e3715e3977
commit 19d0e98c20
1 changed files with 5 additions and 1 deletions
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6
kernel/fork.c
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@ -2463,8 +2463,12 @@ __latent_entropy struct task_struct *copy_process(
fd_install(pidfd, pidfile);
proc_fork_connector(p);
sched_post_fork(p);
/*
* sched_ext needs @p to be associated with its cgroup in its post_fork
* hook. cgroup_post_fork() should come before sched_post_fork().
*/
cgroup_post_fork(p, args);
sched_post_fork(p);
perf_event_fork(p);
trace_task_newtask(p, clone_flags);