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| author | James Morris <james.l.morris@oracle.com> | 2017-11-29 12:47:41 +1100 |
|---|---|---|
| committer | James Morris <james.l.morris@oracle.com> | 2017-11-29 12:47:41 +1100 |
| commit | cf40a76e7d5874bb25f4404eecc58a2e033af885 (patch) | |
| tree | 8fd81cbea03c87b3d41d7ae5b1d11eadd35d6ef5 /tools/perf/util/cgroup.c | |
| parent | ab5348c9c23cd253f5902980d2d8fe067dc24c82 (diff) | |
| parent | 4fbd8d194f06c8a3fd2af1ce560ddb31f7ec8323 (diff) | |
| download | talos-op-linux-cf40a76e7d5874bb25f4404eecc58a2e033af885.tar.gz talos-op-linux-cf40a76e7d5874bb25f4404eecc58a2e033af885.zip | |
Merge tag 'v4.15-rc1' into next-seccomp
Linux 4.15-rc1
Diffstat (limited to 'tools/perf/util/cgroup.c')
| -rw-r--r-- | tools/perf/util/cgroup.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/tools/perf/util/cgroup.c b/tools/perf/util/cgroup.c index 03347748f3fa..d9ffc1e6eb39 100644 --- a/tools/perf/util/cgroup.c +++ b/tools/perf/util/cgroup.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 #include "util.h" #include "../perf.h" #include <subcmd/parse-options.h> @@ -98,8 +99,10 @@ static int add_cgroup(struct perf_evlist *evlist, char *str) cgrp = counter->cgrp; if (!cgrp) continue; - if (!strcmp(cgrp->name, str)) + if (!strcmp(cgrp->name, str)) { + refcount_inc(&cgrp->refcnt); break; + } cgrp = NULL; } @@ -110,6 +113,7 @@ static int add_cgroup(struct perf_evlist *evlist, char *str) return -1; cgrp->name = str; + refcount_set(&cgrp->refcnt, 1); cgrp->fd = open_cgroup(str); if (cgrp->fd == -1) { @@ -128,12 +132,11 @@ static int add_cgroup(struct perf_evlist *evlist, char *str) goto found; n++; } - if (refcount_read(&cgrp->refcnt) == 0) + if (refcount_dec_and_test(&cgrp->refcnt)) free(cgrp); return -1; found: - refcount_inc(&cgrp->refcnt); counter->cgrp = cgrp; return 0; } |
