From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751550AbdBXB2z (ORCPT ); Thu, 23 Feb 2017 20:28:55 -0500 Received: from LGEAMRELO11.lge.com ([156.147.23.51]:38526 "EHLO lgeamrelo11.lge.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751303AbdBXB2y (ORCPT ); Thu, 23 Feb 2017 20:28:54 -0500 X-Original-SENDERIP: 156.147.1.127 X-Original-MAILFROM: namhyung@kernel.org X-Original-SENDERIP: 10.177.227.17 X-Original-MAILFROM: namhyung@kernel.org From: Namhyung Kim To: Arnaldo Carvalho de Melo Cc: Ingo Molnar , Peter Zijlstra , Jiri Olsa , LKML , kernel-team@lge.com, Steven Rostedt , Frederic Weisbecker Subject: [PATCH 4/4] perf ftrace: Use pager for displaying result Date: Fri, 24 Feb 2017 10:12:51 +0900 Message-Id: <20170224011251.14946-4-namhyung@kernel.org> X-Mailer: git-send-email 2.11.1 In-Reply-To: <20170224011251.14946-1-namhyung@kernel.org> References: <20170224011251.14946-1-namhyung@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 Cc: Frederic Weisbecker Signed-off-by: Namhyung Kim --- 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