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authorMichael Ellerman <mpe@ellerman.id.au>2016-12-16 07:05:38 +0300
committerMichael Ellerman <mpe@ellerman.id.au>2016-12-16 07:05:38 +0300
commitc6f6634721c871bfab4235e1cbcad208d3063798 (patch)
tree9cc1d0307b9c5a3a84021419d5f80bea8bbfc49e /arch/powerpc/mm/init_64.c
parentff45000fcb56b5b0f1a14a865d3541746d838a0a (diff)
parentbaae856ebdeeaefbadd4a02cdb54b7c2277ff4dd (diff)
downloadlinux-c6f6634721c871bfab4235e1cbcad208d3063798.tar.xz
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/scottwood/linux into next
Freescale updates from Scott: "Highlights include 8xx hugepage support, qbman fixes/cleanup, device tree updates, and some misc cleanup."
Diffstat (limited to 'arch/powerpc/mm/init_64.c')
-rw-r--r--arch/powerpc/mm/init_64.c77
1 files changed, 0 insertions, 77 deletions
diff --git a/arch/powerpc/mm/init_64.c b/arch/powerpc/mm/init_64.c
index 16ada1eb7e26..a000c3585390 100644
--- a/arch/powerpc/mm/init_64.c
+++ b/arch/powerpc/mm/init_64.c
@@ -80,83 +80,6 @@ EXPORT_SYMBOL_GPL(memstart_addr);
phys_addr_t kernstart_addr;
EXPORT_SYMBOL_GPL(kernstart_addr);
-static void pgd_ctor(void *addr)
-{
- memset(addr, 0, PGD_TABLE_SIZE);
-}
-
-static void pud_ctor(void *addr)
-{
- memset(addr, 0, PUD_TABLE_SIZE);
-}
-
-static void pmd_ctor(void *addr)
-{
- memset(addr, 0, PMD_TABLE_SIZE);
-}
-
-struct kmem_cache *pgtable_cache[MAX_PGTABLE_INDEX_SIZE];
-
-/*
- * Create a kmem_cache() for pagetables. This is not used for PTE
- * pages - they're linked to struct page, come from the normal free
- * pages pool and have a different entry size (see real_pte_t) to
- * everything else. Caches created by this function are used for all
- * the higher level pagetables, and for hugepage pagetables.
- */
-void pgtable_cache_add(unsigned shift, void (*ctor)(void *))
-{
- char *name;
- unsigned long table_size = sizeof(void *) << shift;
- unsigned long align = table_size;
-
- /* When batching pgtable pointers for RCU freeing, we store
- * the index size in the low bits. Table alignment must be
- * big enough to fit it.
- *
- * Likewise, hugeapge pagetable pointers contain a (different)
- * shift value in the low bits. All tables must be aligned so
- * as to leave enough 0 bits in the address to contain it. */
- unsigned long minalign = max(MAX_PGTABLE_INDEX_SIZE + 1,
- HUGEPD_SHIFT_MASK + 1);
- struct kmem_cache *new;
-
- /* It would be nice if this was a BUILD_BUG_ON(), but at the
- * moment, gcc doesn't seem to recognize is_power_of_2 as a
- * constant expression, so so much for that. */
- BUG_ON(!is_power_of_2(minalign));
- BUG_ON((shift < 1) || (shift > MAX_PGTABLE_INDEX_SIZE));
-
- if (PGT_CACHE(shift))
- return; /* Already have a cache of this size */
-
- align = max_t(unsigned long, align, minalign);
- name = kasprintf(GFP_KERNEL, "pgtable-2^%d", shift);
- new = kmem_cache_create(name, table_size, align, 0, ctor);
- kfree(name);
- pgtable_cache[shift - 1] = new;
- pr_debug("Allocated pgtable cache for order %d\n", shift);
-}
-
-
-void pgtable_cache_init(void)
-{
- pgtable_cache_add(PGD_INDEX_SIZE, pgd_ctor);
- pgtable_cache_add(PMD_CACHE_INDEX, pmd_ctor);
- /*
- * 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_INDEX_SIZE && !PGT_CACHE(PUD_INDEX_SIZE))
- pgtable_cache_add(PUD_INDEX_SIZE, pud_ctor);
-
- if (!PGT_CACHE(PGD_INDEX_SIZE) || !PGT_CACHE(PMD_CACHE_INDEX))
- panic("Couldn't allocate pgtable caches");
- if (PUD_INDEX_SIZE && !PGT_CACHE(PUD_INDEX_SIZE))
- panic("Couldn't allocate pud pgtable caches");
-}
-
#ifdef CONFIG_SPARSEMEM_VMEMMAP
/*
* Given an address within the vmemmap, determine the pfn of the page that