Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753271AbdCFJNu (ORCPT ); Mon, 6 Mar 2017 04:13:50 -0500 Received: from mx2.suse.de ([195.135.220.15]:37220 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753179AbdCFJND (ORCPT ); Mon, 6 Mar 2017 04:13:03 -0500 X-Amavis-Alert: BAD HEADER SECTION, Duplicate header field: "References" From: Jiri Slaby To: stable@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Rabin Vincent , Linus Torvalds , Peter Zijlstra , Steven Rostedt , Thomas Gleixner , Ingo Molnar , Nikolay Borisov , Jiri Slaby Subject: [PATCH 3.12 047/113] sched/debug: Don't dump sched debug info in SysRq-W Date: Mon, 6 Mar 2017 10:11:11 +0100 Message-Id: X-Mailer: git-send-email 2.12.0 In-Reply-To: References: In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1325 Lines: 41 From: Rabin Vincent 3.12-stable review patch. If anyone has any objections, please let me know. =============== commit fb90a6e93c0684ab2629a42462400603aa829b9c upstream. sysrq_sched_debug_show() can dump a lot of information. Don't print out all that if we're just trying to get a list of blocked tasks (SysRq-W). The information is still accessible with SysRq-T. Signed-off-by: Rabin Vincent Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Steven Rostedt Cc: Thomas Gleixner Link: http://lkml.kernel.org/r/1459777322-30902-1-git-send-email-rabin.vincent@axis.com Signed-off-by: Ingo Molnar Cc: Nikolay Borisov Signed-off-by: Jiri Slaby --- kernel/sched/core.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/kernel/sched/core.c b/kernel/sched/core.c index fe080adbe5a8..426193802b1f 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -4233,7 +4233,8 @@ void show_state_filter(unsigned long state_filter) touch_all_softlockup_watchdogs(); #ifdef CONFIG_SCHED_DEBUG - sysrq_sched_debug_show(); + if (!state_filter) + sysrq_sched_debug_show(); #endif rcu_read_unlock(); /* -- 2.12.0