sched_ext: Defer scx_sched kobj sysfs add into the enable workfns

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Split kobject_init_and_add() in scx_alloc_and_add_sched(): only
kobject_init() runs there. A new scx_sched_sysfs_add() helper does
kobject_add() (and creates sub_kset when the scheduler implements
ops.sub_attach), called by both enable workfns once @sch is linked and its
sysfs-visible state is initialized. Prep so a future caps attribute can rely
on @sch being fully built by the time it's sysfs-visible. Add early enough
that a stall later in enable still leaves sysfs inspectable.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Andrea Righi <arighi@nvidia.com>

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Tejun Heo 2026-07-13 22:18:42 -10:00

parent 30067643bc

commit 80e6adaa35

3 changed files with 53 additions and 29 deletions

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73

kernel/sched/ext/ext.c

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1

kernel/sched/ext/internal.h

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8

kernel/sched/ext/sub.c

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