perf cgroup: Rename 'struct cgroup_sel' to 'struct cgroup'

That name isn't used, is shorter, lets switch to it.

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-e51yphwgvepd1y4f5fjptmjq@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/util/cgroup.c

@@ -93,7 +93,7 @@ static int open_cgroup(char *name)
 static int add_cgroup(struct perf_evlist *evlist, char *str)
 {
 	struct perf_evsel *counter;
-	struct cgroup_sel *cgrp = NULL;
+	struct cgroup *cgrp = NULL;
 	int n;
 	/*
 	 * check if cgrp is already defined, if so we reuse it
@@ -144,7 +144,7 @@ static int add_cgroup(struct perf_evlist *evlist, char *str)
 	return 0;
 }
 
-void close_cgroup(struct cgroup_sel *cgrp)
+void close_cgroup(struct cgroup *cgrp)
 {
 	if (cgrp && refcount_dec_and_test(&cgrp->refcnt)) {
 		close(cgrp->fd);
@@ -158,7 +158,7 @@ int parse_cgroups(const struct option *opt, const char *str,
 {
 	struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
 	struct perf_evsel *counter;
-	struct cgroup_sel *cgrp = NULL;
+	struct cgroup *cgrp = NULL;
 	const char *p, *e, *eos = str + strlen(str);
 	char *s;
 	int ret, i;

tools/perf/util/cgroup.h

@@ -6,7 +6,7 @@
 
 struct option;
 
-struct cgroup_sel {
+struct cgroup {
 	char *name;
 	int fd;
 	refcount_t refcnt;
@@ -14,7 +14,8 @@ struct cgroup_sel {
 
 
 extern int nr_cgroups; /* number of explicit cgroups defined */
-void close_cgroup(struct cgroup_sel *cgrp);
+void close_cgroup(struct cgroup *cgrp);
+
 int parse_cgroups(const struct option *opt, const char *str, int unset);
 
 #endif /* __CGROUP_H__ */

tools/perf/util/evsel.h

@@ -30,7 +30,7 @@ struct perf_sample_id {
 	u64			period;
 };
 
-struct cgroup_sel;
+struct cgroup;
 
 /*
  * The 'struct perf_evsel_config_term' is used to pass event
@@ -107,7 +107,7 @@ struct perf_evsel {
 	struct perf_stat_evsel  *stats;
 	void			*priv;
 	u64			db_id;
-	struct cgroup_sel	*cgrp;
+	struct cgroup		*cgrp;
 	void			*handler;
 	struct cpu_map		*cpus;
 	struct cpu_map		*own_cpus;