Commit 58335964 authored by Namhyung Kim's avatar Namhyung Kim Committed by Arnaldo Carvalho de Melo

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: default avatarNamhyung Kim <namhyung@kernel.org>
Tested-by: default avatarArnaldo 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.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent dc231032
...@@ -195,6 +195,7 @@ static int __cmd_ftrace(struct perf_ftrace *ftrace, int argc, const char **argv) ...@@ -195,6 +195,7 @@ static int __cmd_ftrace(struct perf_ftrace *ftrace, int argc, const char **argv)
signal(SIGINT, sig_handler); signal(SIGINT, sig_handler);
signal(SIGUSR1, sig_handler); signal(SIGUSR1, sig_handler);
signal(SIGCHLD, sig_handler); signal(SIGCHLD, sig_handler);
signal(SIGPIPE, sig_handler);
if (reset_tracing_files(ftrace) < 0) if (reset_tracing_files(ftrace) < 0)
goto out; goto out;
...@@ -247,6 +248,8 @@ static int __cmd_ftrace(struct perf_ftrace *ftrace, int argc, const char **argv) ...@@ -247,6 +248,8 @@ static int __cmd_ftrace(struct perf_ftrace *ftrace, int argc, const char **argv)
goto out_close_fd; goto out_close_fd;
} }
setup_pager();
perf_evlist__start_workload(ftrace->evlist); perf_evlist__start_workload(ftrace->evlist);
while (!done) { while (!done) {
......
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