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authorTejun Heo <tj@kernel.org>2014-03-19 10:23:55 -0400
committerTejun Heo <tj@kernel.org>2014-03-19 10:23:55 -0400
commit8cbbf2c972c4444cad36f61cd571714c39b8cf04 (patch)
treefe3f24371e5f48023b319e217951fe48b66fc3ee /kernel/cgroup.c
parenta2dd424750807f83632a2a70293961086fd8f870 (diff)
cgroup: implement CFTYPE_ONLY_ON_DFL
This cftype flag makes the file only appear on the default hierarchy. This will later be used for cgroup.controllers file. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Li Zefan <lizefan@huawei.com>
Diffstat (limited to 'kernel/cgroup.c')
-rw-r--r--kernel/cgroup.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 69b4939e9f6d..37b6d534b0ca 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -2356,6 +2356,8 @@ static int cgroup_addrm_files(struct cgroup *cgrp, struct cftype cfts[],
for (cft = cfts; cft->name[0] != '\0'; cft++) {
/* does cft->flags tell us to skip this file on @cgrp? */
+ if ((cft->flags & CFTYPE_ONLY_ON_DFL) && !cgroup_on_dfl(cgrp))
+ continue;
if ((cft->flags & CFTYPE_INSANE) && cgroup_sane_behavior(cgrp))
continue;
if ((cft->flags & CFTYPE_NOT_ON_ROOT) && !cgrp->parent)