diff options
Diffstat (limited to 'tools/perf/util/cgroup.c')
| -rw-r--r-- | tools/perf/util/cgroup.c | 10 |
1 files changed, 3 insertions, 7 deletions
diff --git a/tools/perf/util/cgroup.c b/tools/perf/util/cgroup.c index 88f7be399..32e12ecfe 100644 --- a/tools/perf/util/cgroup.c +++ b/tools/perf/util/cgroup.c @@ -115,23 +115,19 @@ static int add_cgroup(struct perf_evlist *evlist, char *str) goto found; n++; } - if (cgrp->refcnt == 0) + if (atomic_read(&cgrp->refcnt) == 0) free(cgrp); return -1; found: - cgrp->refcnt++; + atomic_inc(&cgrp->refcnt); counter->cgrp = cgrp; return 0; } void close_cgroup(struct cgroup_sel *cgrp) { - if (!cgrp) - return; - - /* XXX: not reentrant */ - if (--cgrp->refcnt == 0) { + if (cgrp && atomic_dec_and_test(&cgrp->refcnt)) { close(cgrp->fd); zfree(&cgrp->name); free(cgrp); |