rcu: Prevent soft-lockup complaints about no-CBs CPUs

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The wait_event() at the head of the rcu_nocb_kthread() can result in
soft-lockup complaints if the CPU in question does not register RCU
callbacks for an extended period.  This commit therefore changes
the wait_event() to a wait_event_interruptible().

Reported-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

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Paul Gortmaker 2012-12-20 09:35:02 -08:00 • committed by Paul E. McKenney

parent d1c3ed669a

commit 353af9c9a8

1 changed files with 2 additions and 1 deletions

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kernel/rcutree_plugin.h

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