rcu: Kick CPU halfway to RCU CPU stall warning

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When an RCU CPU stall warning occurs, the CPU invokes resched_cpu() on
itself.  This can help move the grace period forward in some situations,
but it would be even better to do this -before- the RCU CPU stall warning.
This commit therefore causes resched_cpu() to be called every five jiffies
once the system is halfway to an RCU CPU stall warning.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

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This commit is contained in:

Paul E. McKenney 2013-09-23 13:57:18 -07:00

parent dc1ccc4815

commit 6193c76aba

2 changed files with 27 additions and 1 deletions

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26

kernel/rcu/tree.c

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2

kernel/rcu/tree.h

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