From: tip-bot for Rabin Vincent <tipbot@zytor.com>
To: linux-tip-commits@vger.kernel.org
Cc: tglx@linutronix.de, linux-kernel@vger.kernel.org,
mingo@kernel.org, rostedt@goodmis.org,
torvalds@linux-foundation.org, rabinv@axis.com, hpa@zytor.com,
peterz@infradead.org
Subject: [tip:sched/core] sched/debug: Don't dump sched debug info in SysRq-W
Date: Wed, 13 Apr 2016 04:36:13 -0700 [thread overview]
Message-ID: <tip-fb90a6e93c0684ab2629a42462400603aa829b9c@git.kernel.org> (raw)
In-Reply-To: <1459777322-30902-1-git-send-email-rabin.vincent@axis.com>
Commit-ID: fb90a6e93c0684ab2629a42462400603aa829b9c
Gitweb: http://git.kernel.org/tip/fb90a6e93c0684ab2629a42462400603aa829b9c
Author: Rabin Vincent <rabinv@axis.com>
AuthorDate: Mon, 4 Apr 2016 15:42:02 +0200
Committer: Ingo Molnar <mingo@kernel.org>
CommitDate: Wed, 13 Apr 2016 11:23:21 +0200
sched/debug: Don't dump sched debug info in SysRq-W
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 <rabinv@axis.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1459777322-30902-1-git-send-email-rabin.vincent@axis.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
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 1159423..06efbb9 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -5050,7 +5050,8 @@ 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();
/*
prev parent reply other threads:[~2016-04-13 11:36 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-04 13:42 [PATCH] sched: don't " Rabin Vincent
2016-04-13 11:36 ` tip-bot for Rabin Vincent [this message]
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