diff options
| author | Yi Tao <escape@linux.alibaba.com> | 2025-09-10 14:59:33 +0800 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2025-09-10 07:26:15 -1000 |
| commit | a1ffc8ad3165fa1cf6a60c6a4b4e00dfd6603cf2 (patch) | |
| tree | 5b595ec5e5c0a1a30aae26e0847c1e42af657634 /kernel/cgroup/cgroup-internal.h | |
| parent | 4a3e62dfa7b79dc8f759219fe64318ff08e98013 (diff) | |
cgroup: refactor the cgroup_attach_lock code to make it clearer
Dynamic cgroup migration involving threadgroup locks can be in one of
two states: no lock held, or holding the global lock. Explicitly
declaring the different lock modes to make the code easier to
understand and facilitates future extensions of the lock modes.
Signed-off-by: Yi Tao <escape@linux.alibaba.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'kernel/cgroup/cgroup-internal.h')
| -rw-r--r-- | kernel/cgroup/cgroup-internal.h | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/kernel/cgroup/cgroup-internal.h b/kernel/cgroup/cgroup-internal.h index b14e61c64a34..a6d6f30b6f65 100644 --- a/kernel/cgroup/cgroup-internal.h +++ b/kernel/cgroup/cgroup-internal.h @@ -249,12 +249,13 @@ int cgroup_migrate(struct task_struct *leader, bool threadgroup, int cgroup_attach_task(struct cgroup *dst_cgrp, struct task_struct *leader, bool threadgroup); -void cgroup_attach_lock(bool lock_threadgroup); -void cgroup_attach_unlock(bool lock_threadgroup); +void cgroup_attach_lock(enum cgroup_attach_lock_mode lock_mode); +void cgroup_attach_unlock(enum cgroup_attach_lock_mode lock_mode); struct task_struct *cgroup_procs_write_start(char *buf, bool threadgroup, - bool *locked) + enum cgroup_attach_lock_mode *lock_mode) __acquires(&cgroup_threadgroup_rwsem); -void cgroup_procs_write_finish(struct task_struct *task, bool locked) +void cgroup_procs_write_finish(struct task_struct *task, + enum cgroup_attach_lock_mode lock_mode) __releases(&cgroup_threadgroup_rwsem); void cgroup_lock_and_drain_offline(struct cgroup *cgrp); |