From: Rabin Vincent <rabin.vincent@axis.com>
To: mingo@redhat.com, peterz@infradead.org
Cc: linux-kernel@vger.kernel.org, Rabin Vincent <rabinv@axis.com>
Subject: [PATCH] sched: don't dump sched debug info in SysRq-W
Date: Mon, 4 Apr 2016 15:42:02 +0200 [thread overview]
Message-ID: <1459777322-30902-1-git-send-email-rabin.vincent@axis.com> (raw)
From: Rabin Vincent <rabinv@axis.com>
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>
---
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 8b489fc..e330d6c 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -4998,7 +4998,8 @@ 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();
/*
--
2.7.0
next reply other threads:[~2016-04-04 13:42 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-04 13:42 Rabin Vincent [this message]
2016-04-13 11:36 ` [tip:sched/core] sched/debug: Don't " tip-bot for Rabin Vincent
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