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rcu: Reduce default RCU CPU stall warning timeout

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The RCU CPU stall warning timeout has defaulted to 60 seconds for
some years, with almost no false positives.  This commit therefore
reduces the default to 21 seconds, slightly shorter than the new
soft-lockup timeout.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
This commit is contained in:
Paul E. McKenney 2012-10-25 17:59:23 -07:00
parent 53bb857c37
commit c896054f75
1 changed files with 1 additions and 1 deletions
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2
lib/Kconfig.debug
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@ -972,7 +972,7 @@ config RCU_CPU_STALL_TIMEOUT
int "RCU CPU stall timeout in seconds"
depends on TREE_RCU || TREE_PREEMPT_RCU
range 3 300
default 60
default 21
help
If a given RCU grace period extends more than the specified
number of seconds, a CPU stall warning is printed. If the