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Commit 43eac670 authored by Rom Lemarchand's avatar Rom Lemarchand
Browse files

cgroup: Fix issues in allow_attach callback 



- Return -EINVAL when cgroups support isn't enabled
- Add allow_attach callback in CPU cgroups

Change-Id: Id3360b4a39919524fc4b6fcbd44fa2050009f000
Signed-off-by: default avatarRom Lemarchand <romlem@android.com>
parent 3b6b02fc

include/linux/cgroup.h

+1 −1
Original line number Diff line number Diff line
@@ -948,7 +948,7 @@ static inline int cgroup_attach_task_all(struct task_struct *from, 
static inline int subsys_cgroup_allow_attach(struct cgroup_subsys_state *css,

					     void *tset)

{

	return 0;

	return -EINVAL;

}

#endif /* !CONFIG_CGROUPS */

kernel/sched/core.c

+1 −0
Original line number Diff line number Diff line
@@ -8247,6 +8247,7 @@ struct cgroup_subsys cpu_cgrp_subsys = { 
	.fork		= cpu_cgroup_fork,

	.can_attach	= cpu_cgroup_can_attach,

	.attach		= cpu_cgroup_attach,

	.allow_attach   = subsys_cgroup_allow_attach,

	.exit		= cpu_cgroup_exit,

	.legacy_cftypes	= cpu_files,

	.early_init	= 1,