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authorTejun Heo <tj@kernel.org>2018-11-13 12:06:41 -0800
committerTejun Heo <tj@kernel.org>2018-11-13 12:16:01 -0800
commitc1bbd933e5fae83f96acd3f748bb01a0300b315d (patch)
treee28a04031e61f3eaf52b3a2a271323ba5d713fee /kernel
parentb1e3aeb11c5e86ee0988a038c4e7682d6beaa977 (diff)
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cgroup: Add .__DEBUG__. prefix to debug file names
Clearly mark the debug files and hide them by default by prefixing ".__DEBUG__.". Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Waiman Long <longman@redhat.com>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/cgroup/cgroup.c11
1 files changed, 7 insertions, 4 deletions
diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c
index ed7f0bfe6429..e06994fd4e34 100644
--- a/kernel/cgroup/cgroup.c
+++ b/kernel/cgroup/cgroup.c
@@ -1400,12 +1400,15 @@ static char *cgroup_file_name(struct cgroup *cgrp, const struct cftype *cft,
struct cgroup_subsys *ss = cft->ss;
if (cft->ss && !(cft->flags & CFTYPE_NO_PREFIX) &&
- !(cgrp->root->flags & CGRP_ROOT_NOPREFIX))
- snprintf(buf, CGROUP_FILE_NAME_MAX, "%s.%s",
- cgroup_on_dfl(cgrp) ? ss->name : ss->legacy_name,
+ !(cgrp->root->flags & CGRP_ROOT_NOPREFIX)) {
+ const char *dbg = (cft->flags & CFTYPE_DEBUG) ? ".__DEBUG__." : "";
+
+ snprintf(buf, CGROUP_FILE_NAME_MAX, "%s%s.%s",
+ dbg, cgroup_on_dfl(cgrp) ? ss->name : ss->legacy_name,
cft->name);
- else
+ } else {
strscpy(buf, cft->name, CGROUP_FILE_NAME_MAX);
+ }
return buf;
}