diff options
| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2018-03-06 21:27:08 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2018-03-07 16:22:26 +0300 |
| commit | 69239ec81d596c57e0cf2d2f26cfe92e8cbd0929 (patch) | |
| tree | 78c50a1d1a414a8571e49c830ab8cbe4862d6ae0 /tools/perf/util/cgroup.c | |
| parent | 4b5ea3bd674f707180b0e8c4f514d30e49f293b3 (diff) | |
| download | linux-69239ec81d596c57e0cf2d2f26cfe92e8cbd0929.tar.xz | |
perf cgroup: Add evlist__findnew_cgroup()
Similar to machine__findnew_thread(), etc, i.e. try to find, get a
refcount if found and return it, otherwise return a new cgroup object.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: https://lkml.kernel.org/n/tip-im1omevlihhyneiic4nl3g24@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/cgroup.c')
| -rw-r--r-- | tools/perf/util/cgroup.c | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/tools/perf/util/cgroup.c b/tools/perf/util/cgroup.c index 26a837037797..6fd33ffc2488 100644 --- a/tools/perf/util/cgroup.c +++ b/tools/perf/util/cgroup.c @@ -128,18 +128,21 @@ out_err: return NULL; } +struct cgroup *evlist__findnew_cgroup(struct perf_evlist *evlist, char *name) +{ + struct cgroup *cgroup = evlist__find_cgroup(evlist, name); + + return cgroup ?: cgroup__new(name); +} + static int add_cgroup(struct perf_evlist *evlist, char *str) { struct perf_evsel *counter; - struct cgroup *cgrp = evlist__find_cgroup(evlist, str); + struct cgroup *cgrp = evlist__findnew_cgroup(evlist, str); int n; - if (!cgrp) { - cgrp = cgroup__new(str); - if (!cgrp) - return -1; - } - + if (!cgrp) + return -1; /* * find corresponding event * if add cgroup N, then need to find event N |