[PATCH 1/6] perf tools: Add long_name for call-graph option.

[Dongsheng Yang]

I am not sure why the -g option in record and top has no long_name
for it.

Example:
	# perf record --[TAB]
	--all-cpus          --count             --freq              --no-delay          --period            --realtime          --uid
	--branch-any        --cpu               --group             --no-inherit        --per-thread        --stat              --verbose
	--branch-filter     --data              --mmap-pages        --no-samples        --pid               --tid               --weight
	--call-graph        --event             --no-buildid        --(null)            --quiet             --timestamp
	--cgroup            --filter            --no-buildid-cache  --output            --raw-samples       --transaction

There is a --(null) here, it is not clear enough to user.

This patch add a "call-graph" long_name for it.

Verification:
	# perf record --[TAB]
	--all-cpus          --count             --freq              --no-delay          --per-thread        --stat              --verbose
	--branch-any        --cpu               --group             --no-inherit        --pid               --tid               --weight
	--branch-filter     --data              --mmap-pages        --no-samples        --quiet             --timestamp
	--call-graph        --event             --no-buildid        --output            --raw-samples       --transaction
	--cgroup            --filter            --no-buildid-cache  --period            --realtime          --uid

Signed-off-by: Dongsheng Yang <yangds.fnst@xxxxxxxxxxxxxx>
---
 tools/perf/builtin-record.c | 2 +-
 tools/perf/builtin-top.c    | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index c1c1200..7460c8f 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -844,7 +844,7 @@ const struct option record_options[] = {
 		     perf_evlist__parse_mmap_pages),
 	OPT_BOOLEAN(0, "group", &record.opts.group,
 		    "put the counters into a counter group"),
-	OPT_CALLBACK_NOOPT('g', NULL, &record.opts,
+	OPT_CALLBACK_NOOPT('g', "call-graph", &record.opts,
 			   NULL, "enables call-graph recording" ,
 			   &record_callchain_opt),
 	OPT_CALLBACK(0, "call-graph", &record.opts,
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 03d37a7..a734a1b 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -1084,7 +1084,7 @@ int cmd_top(int argc, const char **argv, const char *prefix __maybe_unused)
 		   " abort, in_tx, transaction"),
 	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,
+	OPT_CALLBACK_NOOPT('g', "call-graph", &top.record_opts,
 			   NULL, "enables call-graph recording",
 			   &callchain_opt),
 	OPT_CALLBACK(0, "call-graph", &top.record_opts,
-- 
1.8.2.1

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