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perf cgroup: Introduce cgroup__new() out of open coded equivalent

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To follow the namespacing convention in tools/perf.

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-jaalyl6bkvvji4r5u8wqw4n4@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2018-03-06 10:33:04 -03:00
parent b80271f76a
commit 923a0fb332
1 changed files with 20 additions and 10 deletions
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30
tools/perf/util/cgroup.c
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@ -109,6 +109,25 @@ static struct cgroup *evlist__find_cgroup(struct perf_evlist *evlist, char *str)
return cgrp;
}
static struct cgroup *cgroup__new(char *name)
{
struct cgroup *cgroup = zalloc(sizeof(*cgroup));
if (cgroup != NULL) {
cgroup->name = name;
refcount_set(&cgroup->refcnt, 1);
cgroup->fd = open_cgroup(name);
if (cgroup->fd == -1)
goto out_err;
}
return cgroup;
out_err:
free(cgroup);
return NULL;
}
static int add_cgroup(struct perf_evlist *evlist, char *str)
{
struct perf_evsel *counter;
@ -116,18 +135,9 @@ static int add_cgroup(struct perf_evlist *evlist, char *str)
int n;
if (!cgrp) {
cgrp = zalloc(sizeof(*cgrp));
cgrp = cgroup__new(str);
if (!cgrp)
return -1;
cgrp->name = str;
refcount_set(&cgrp->refcnt, 1);
cgrp->fd = open_cgroup(str);
if (cgrp->fd == -1) {
free(cgrp);
return -1;
}
}
/*