perf top: Support call-graph display options also

Currently 'perf top --call-graph' option is same as 'perf record'.  But
'perf top' also need to receive display options in 'perf report'.  To do
that, change parse_callchain_report_opt() to allow record options too.

Now perf top can receive display options like below:

  $ perf top --call-graph
    Error: option `call-graph' requires a value

   Usage: perf top [<options>]

        --call-graph
          <mode[,dump_size],output_type,min_percent[,print_limit],call_order[,branch]>
                     setup and enables call-graph (stack chain/backtrace)
                     recording: fp dwarf lbr, output_type (graph, flat,
		     fractal, or none), min percent threshold, optional
		     print limit, callchain order, key (function or
		     address), add branches

  $ perf top --call-graph callee,graph,fp

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Chandler Carruth <chandlerc@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1445495330-25416-2-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 21 insertions, 5 deletions

diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 6f641fd68296..1de381d3f29f 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -1053,8 +1053,22 @@ callchain_opt(const struct option *opt, const char *arg, int unset)
 static int
 parse_callchain_opt(const struct option *opt, const char *arg, int unset)
 {
-	symbol_conf.use_callchain = true;
-	return record_parse_callchain_opt(opt, arg, unset);
+	struct record_opts *record = (struct record_opts *)opt->value;
+
+	record->callgraph_set = true;
+	callchain_param.enabled = !unset;
+	callchain_param.record_mode = CALLCHAIN_FP;
+
+	/*
+	 * --no-call-graph
+	 */
+	if (unset) {
+		symbol_conf.use_callchain = false;
+		callchain_param.record_mode = CALLCHAIN_NONE;
+		return 0;
+	}
+
+	return parse_callchain_top_opt(arg);
 }
 
 static int perf_top_config(const char *var, const char *value, void *cb)
@@ -1079,6 +1093,8 @@ parse_percent_limit(const struct option *opt, const char *arg,
 	return 0;
 }
 
+const char top_callchain_help[] = CALLCHAIN_RECORD_HELP ", " CALLCHAIN_REPORT_HELP;
+
 int cmd_top(int argc, const char **argv, const char *prefix __maybe_unused)
 {
 	char errbuf[BUFSIZ];
@@ -1154,11 +1170,11 @@ int cmd_top(int argc, const char **argv, const char *prefix __maybe_unused)
 	OPT_BOOLEAN('n', "show-nr-samples", &symbol_conf.show_nr_samples,
 		    "Show a column with the number of samples"),
 	OPT_CALLBACK_NOOPT('g', NULL, &top.record_opts,
-			   NULL, "enables call-graph recording",
+			   NULL, "enables call-graph recording and display",
 			   &callchain_opt),
 	OPT_CALLBACK(0, "call-graph", &top.record_opts,
-		     "mode[,dump_size]", record_callchain_help,
-		     &parse_callchain_opt),
+		     "mode[,dump_size],output_type,min_percent[,print_limit],call_order[,branch]",
+		     top_callchain_help, &parse_callchain_opt),
 	OPT_BOOLEAN(0, "children", &symbol_conf.cumulate_callchain,
 		    "Accumulate callchains of children and show total overhead as well"),
 	OPT_INTEGER(0, "max-stack", &top.max_stack,