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 <[email protected]> Cc: Frederic Weisbecker <[email protected]> Signed-off-by: Namhyung Kim <[email protected]> --- tools/perf/builtin-ftrace.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c index d5b566ed7178..6087295f8827 100644 --- a/tools/perf/builtin-ftrace.c +++ b/tools/perf/builtin-ftrace.c @@ -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) { -- 2.11.1
