Commit 58335964 authored Feb 24, 2017 by Namhyung Kim Committed by Arnaldo Carvalho de Melo Mar 03, 2017

perf ftrace: Use pager for displaying result



It's convenient to use the 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.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: kernel-team@lge.com
Link: http://lkml.kernel.org/r/20170224011251.14946-4-namhyung@kernel.org


Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

parent dc231032

tools/perf/builtin-ftrace.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -195,6 +195,7 @@ static int __cmd_ftrace(struct perf_ftrace ftrace, int argc, const char *argv)
		signal(SIGINT, sig_handler);
		signal(SIGUSR1, sig_handler);
		signal(SIGCHLD, sig_handler);
		signal(SIGPIPE, sig_handler);

		if (reset_tracing_files(ftrace) < 0)
		goto out;
		@@ -247,6 +248,8 @@ static int __cmd_ftrace(struct perf_ftrace ftrace, int argc, const char *argv)
		goto out_close_fd;
		}

		setup_pager();

		perf_evlist__start_workload(ftrace->evlist);

		while (!done) {