Commit 32bff4b9 authored Nov 29, 2018 by Christophe Leroy Committed by Michael Ellerman Dec 04, 2018

powerpc/mm: remove unnecessary test in pgtable_cache_init()



pgtable_cache_add() gracefully handles the case when a cache that
size already exists by returning early with the following test:

	if (PGT_CACHE(shift))
		return; /* Already have a cache of this size */

It is then not needed to test the existence of the cache before.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

parent 1e03c7e2

arch/powerpc/mm/init-common.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -111,13 +111,13 @@ void pgtable_cache_init(void)
		{
		pgtable_cache_add(PGD_INDEX_SIZE);

		if (PMD_CACHE_INDEX && !PGT_CACHE(PMD_CACHE_INDEX))
		if (PMD_CACHE_INDEX)
		pgtable_cache_add(PMD_CACHE_INDEX);
		/*
		* In all current configs, when the PUD index exists it's the
		* same size as either the pgd or pmd index except with THP enabled
		* on book3s 64
		*/
		if (PUD_CACHE_INDEX && !PGT_CACHE(PUD_CACHE_INDEX))
		if (PUD_CACHE_INDEX)
		pgtable_cache_add(PUD_CACHE_INDEX);
		}