rcu: Replace flush_signals() with WARN_ON(signal_pending())

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Currently, when RCU awakens from a wait_event_interruptible() that
might have awakened prematurely, it does a flush_signals(). This is
done on the off-chance that someone figured out how to deliver a signal
to a kthread, which is supposed to be impossible.  Given that this
is supposed to be impossible, this commit changes the flush_signals()
calls into WARN_ON(signal_pending()).

Reported-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

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This commit is contained in:

Paul E. McKenney 2014-08-14 10:28:23 -07:00

parent 2aa792e6fa

commit 73a860cd58

2 changed files with 5 additions and 5 deletions

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4

kernel/rcu/tree.c

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6

kernel/rcu/tree_plugin.h

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