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rcu: Fix up pending cbs check in rcu_prepare_for_idle
commit135bd1a230
upstream. The pending-callbacks check in rcu_prepare_for_idle() is backwards. It should accelerate if there are pending callbacks, but the check rather uselessly accelerates only if there are no callbacks. This commit therefore inverts this check. Fixes:15fecf89e4
("srcu: Abstract multi-tail callback list handling") Signed-off-by: Neeraj Upadhyay <neeraju@codeaurora.org> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -1507,7 +1507,7 @@ static void rcu_prepare_for_idle(void)
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rdtp->last_accelerate = jiffies;
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for_each_rcu_flavor(rsp) {
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rdp = this_cpu_ptr(rsp->rda);
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if (rcu_segcblist_pend_cbs(&rdp->cblist))
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if (!rcu_segcblist_pend_cbs(&rdp->cblist))
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continue;
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rnp = rdp->mynode;
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raw_spin_lock_rcu_node(rnp); /* irqs already disabled. */
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