Commit 04229110 authored Nov 05, 2018 by Paul E. McKenney

powerpc: Convert hugepd_free() to use call_rcu()

Now that call_rcu()'s callback is not invoked until after all
preempt-disable regions of code have completed (in addition to explicitly
marked RCU read-side critical sections), call_rcu() can be used in place
of call_rcu_sched().  This commit therefore makes that change.

Signed-off-by: Paul E. McKenney <paulmck@linux.ibm.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: <linuxppc-dev@lists.ozlabs.org>

parent 0d4e68e2

arch/powerpc/mm/hugetlbpage.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -289,7 +289,7 @@ static void hugepd_free(struct mmu_gather tlb, void hugepte)

		(batchp)->ptes[(batchp)->index++] = hugepte;
		if ((*batchp)->index == HUGEPD_FREELIST_SIZE) {
		call_rcu_sched(&(*batchp)->rcu, hugepd_free_rcu_callback);
		call_rcu(&(*batchp)->rcu, hugepd_free_rcu_callback);
		*batchp = NULL;
		}
		put_cpu_var(hugepd_freelist_cur);

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