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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>
This commit is contained in:
Rabin Vincent 2016-04-04 15:42:02 +02:00 committed by Ingo Molnar
parent 2b8c41daba
commit fb90a6e93c
1 changed files with 2 additions and 1 deletions
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1
kernel/sched/core.c
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@ -5050,6 +5050,7 @@ void show_state_filter(unsigned long state_filter)
touch_all_softlockup_watchdogs(); touch_all_softlockup_watchdogs();
#ifdef CONFIG_SCHED_DEBUG #ifdef CONFIG_SCHED_DEBUG
if (!state_filter)
sysrq_sched_debug_show(); sysrq_sched_debug_show();
#endif #endif
rcu_read_unlock(); rcu_read_unlock();