perf tools: Convert {record,top}.call-graph option to call-graph.record-mode

So that it'll be passed to perf_callchain_config().
Reviewed-by: NDavid Ahern <dsahern@gmail.com>
Signed-off-by: NNamhyung Kim <namhyung@kernel.org>
Acked-by: NJiri Olsa <jolsa@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Milian Wolff <mail@milianw.de>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1411434104-5307-6-git-send-email-namhyung@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/builtin-record.c

@@ -673,7 +673,7 @@ int record_callchain_opt(const struct option *opt __maybe_unused,
 static int perf_record_config(const char *var, const char *value, void *cb)
 {
 	if (!strcmp(var, "record.call-graph"))
-		return parse_callchain_record_opt(value);
+		var = "call-graph.record-mode"; /* fall-through */
 
 	return perf_default_config(var, value, cb);
 }

tools/perf/builtin-top.c

@@ -1021,7 +1021,7 @@ parse_callchain_opt(const struct option *opt, const char *arg, int unset)
 static int perf_top_config(const char *var, const char *value, void *cb)
 {
 	if (!strcmp(var, "top.call-graph"))
-		return parse_callchain_record_opt(value);
+		var = "call-graph.record-mode"; /* fall-through */
 	if (!strcmp(var, "top.children")) {
 		symbol_conf.cumulate_callchain = perf_config_bool(var, value);
 		return 0;