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authorKirill A. Shutemov <kirill.shutemov@linux.intel.com>2013-11-14 14:31:50 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2013-11-15 09:32:19 +0900
commitf820e2805c7acb157a78438d07e47f4fc57fe679 (patch)
tree53d638a93450e21eaefcce74495a512e56623fc6 /arch/xtensa/mm
parent01058e70767de7b846588ef651c4d66e862f6823 (diff)
downloadop-kernel-dev-f820e2805c7acb157a78438d07e47f4fc57fe679.zip
op-kernel-dev-f820e2805c7acb157a78438d07e47f4fc57fe679.tar.gz
xtensa: use buddy allocator for PTE table
At the moment xtensa uses slab allocator for PTE table. It doesn't work with enabled split page table lock: slab uses page->slab_cache and page->first_page for its pages. These fields share stroage with page->ptl. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Chris Zankel <chris@zankel.net> Acked-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/xtensa/mm')
-rw-r--r--arch/xtensa/mm/mmu.c20
1 files changed, 0 insertions, 20 deletions
diff --git a/arch/xtensa/mm/mmu.c b/arch/xtensa/mm/mmu.c
index a107757..c43771c 100644
--- a/arch/xtensa/mm/mmu.c
+++ b/arch/xtensa/mm/mmu.c
@@ -50,23 +50,3 @@ void __init init_mmu(void)
*/
set_ptevaddr_register(PGTABLE_START);
}
-
-struct kmem_cache *pgtable_cache __read_mostly;
-
-static void pgd_ctor(void *addr)
-{
- pte_t *ptep = (pte_t *)addr;
- int i;
-
- for (i = 0; i < 1024; i++, ptep++)
- pte_clear(NULL, 0, ptep);
-
-}
-
-void __init pgtable_cache_init(void)
-{
- pgtable_cache = kmem_cache_create("pgd",
- PAGE_SIZE, PAGE_SIZE,
- SLAB_HWCACHE_ALIGN,
- pgd_ctor);
-}
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