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powerpc/mm: remove unnecessary test in pgtable_cache_init()

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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>
This commit is contained in:
Christophe Leroy 2018-11-29 14:07:09 +00:00 committed by Michael Ellerman
parent 1e03c7e2ea
commit 32bff4b905
1 changed files with 2 additions and 2 deletions
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4
arch/powerpc/mm/init-common.c
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@ -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);
}