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authorNamhyung Kim <namhyung@kernel.org>2017-02-24 10:12:51 +0900
committerArnaldo Carvalho de Melo <acme@redhat.com>2017-03-03 19:07:17 -0300
commit583359646fde8526ea9456618cc24dc359b34094 (patch)
tree197fc5016fac8890cacda3b6f4a62baab6a618b7
parentdc23103278c5ad53c177a25e209ef687e6d5d293 (diff)
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>
-rw-r--r--tools/perf/builtin-ftrace.c3
1 files changed, 3 insertions, 0 deletions
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) {