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Commit b5904090 authored by Paul E. McKenney's avatar Paul E. McKenney
Browse files

rcu: Don't do reschedule unless in irq 



Condition the set_need_resched() in rcu_irq_exit() on in_irq().  This
should be a no-op, because rcu_irq_exit() should only be called from irq.

Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
parent 1135633b

kernel/rcutree.c

+3 −2
Original line number Diff line number Diff line
@@ -421,8 +421,9 @@ void rcu_irq_exit(void) 
	WARN_ON_ONCE(rdtp->dynticks & 0x1);



	/* If the interrupt queued a callback, get out of dyntick mode. */

	if (__this_cpu_read(rcu_sched_data.nxtlist) ||

	    __this_cpu_read(rcu_bh_data.nxtlist))

	if (in_irq() &&

	    (__this_cpu_read(rcu_sched_data.nxtlist) ||

	     __this_cpu_read(rcu_bh_data.nxtlist)))

		set_need_resched();

}