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authorAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>2013-04-28 09:37:32 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2013-04-30 16:00:04 +1000
commitd614bb041209fd7cb5e4b35e11a7b2f6ee8f62b8 (patch)
treef3ec5a71345b507db2b8c8d461c869741d015514 /arch/powerpc/include/asm/pgalloc-32.h
parent419df06eea5bfa815e3a78e0aad6cfb320c1654f (diff)
powerpc: Move the pte free routines from common header
Acked-by: Paul Mackerras <paulus@samba.org> This patch moves the common code to 32/64 bit headers and also duplicate 4K_PAGES and 64K_PAGES section. We will later change the 64 bit 64K_PAGES version to support smaller PTE fragments. The patch doesn't introduce any functional changes. Acked-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include/asm/pgalloc-32.h')
-rw-r--r--arch/powerpc/include/asm/pgalloc-32.h45
1 files changed, 45 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/pgalloc-32.h b/arch/powerpc/include/asm/pgalloc-32.h
index 580cf73b96e8..27b2386f738a 100644
--- a/arch/powerpc/include/asm/pgalloc-32.h
+++ b/arch/powerpc/include/asm/pgalloc-32.h
@@ -37,6 +37,17 @@ extern void pgd_free(struct mm_struct *mm, pgd_t *pgd);
extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long addr);
extern pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long addr);
+static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
+{
+ free_page((unsigned long)pte);
+}
+
+static inline void pte_free(struct mm_struct *mm, pgtable_t ptepage)
+{
+ pgtable_page_dtor(ptepage);
+ __free_page(ptepage);
+}
+
static inline void pgtable_free(void *table, unsigned index_size)
{
BUG_ON(index_size); /* 32-bit doesn't use this */
@@ -45,4 +56,38 @@ static inline void pgtable_free(void *table, unsigned index_size)
#define check_pgt_cache() do { } while (0)
+#ifdef CONFIG_SMP
+static inline void pgtable_free_tlb(struct mmu_gather *tlb,
+ void *table, int shift)
+{
+ unsigned long pgf = (unsigned long)table;
+ BUG_ON(shift > MAX_PGTABLE_INDEX_SIZE);
+ pgf |= shift;
+ tlb_remove_table(tlb, (void *)pgf);
+}
+
+static inline void __tlb_remove_table(void *_table)
+{
+ void *table = (void *)((unsigned long)_table & ~MAX_PGTABLE_INDEX_SIZE);
+ unsigned shift = (unsigned long)_table & MAX_PGTABLE_INDEX_SIZE;
+
+ pgtable_free(table, shift);
+}
+#else
+static inline void pgtable_free_tlb(struct mmu_gather *tlb,
+ void *table, int shift)
+{
+ pgtable_free(table, shift);
+}
+#endif
+
+static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t table,
+ unsigned long address)
+{
+ struct page *page = page_address(table);
+
+ tlb_flush_pgtable(tlb, address);
+ pgtable_page_dtor(page);
+ pgtable_free_tlb(tlb, page, 0);
+}
#endif /* _ASM_POWERPC_PGALLOC_32_H */