From: Namhyung Kim <namhyung....@lge.com>
It's convenient to use pager when seeing many lines of result.
Note that setup_pager() should be called after perf_evlist__
prepare_workload() since they can interfere each other regarding
shared stdio streams.
Cc: Steven Rostedt <rost...@goodmis.org>
Cc: Frederic Weisbecker <fweis...@gmail.com>
Signed-off-by: Namhyung Kim <namhy...@kernel.org>
---
tools/perf/builtin-ftrace.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c
index 676b2aa7590f..83ed6d797087 100644
--- a/tools/perf/builtin-ftrace.c
+++ b/tools/perf/builtin-ftrace.c
@@ -227,6 +227,7 @@ static int do_ftrace_live(struct perf_ftrace *ftrace)
signal(SIGINT, sig_handler);
signal(SIGUSR1, sig_handler);
signal(SIGCHLD, sig_handler);
+ signal(SIGPIPE, sig_handler);
if (setup_tracing_files(ftrace) < 0)
goto out_reset;
@@ -1465,6 +1466,8 @@ __cmd_ftrace_live(struct perf_ftrace *ftrace, int argc,
const char **argv)
argv, false, true) < 0)
goto out_maps;
+ setup_pager();
+
ret = do_ftrace_live(ftrace);
out_maps:
@@ -1586,6 +1589,8 @@ __cmd_ftrace_show(struct perf_ftrace *ftrace, int argc,
const char **argv)
if (ftrace->dirname == NULL)
ftrace->dirname = DEFAULT_DIRNAME;
+ setup_pager();
+
ret = do_ftrace_show(ftrace);
perf_evlist__delete_maps(ftrace->evlist);
@@ -1646,6 +1651,7 @@ __cmd_ftrace_report(struct perf_ftrace *ftrace, int argc,
const char **argv)
perf_hpp__init();
+ setup_pager();
setup_sorting();
symbol_conf.exclude_other = false;
--
1.7.11.7
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