diff options
| author | Heechul Yun <hyun@nvidia.com> | 2011-07-05 19:03:55 -0700 |
|---|---|---|
| committer | Varun Colbert <vcolbert@nvidia.com> | 2011-07-15 16:01:45 -0700 |
| commit | 6eeccbf7aee3ceae0d711df5df53f20f1195b1c7 (patch) | |
| tree | 7916c00fec44f6dcab51931b4b3616b120947a24 | |
| parent | 4ae8208660f838a7e31bdc1691026dada2920126 (diff) | |
ARM: remove unnecessary dcache_clean_area
Cortex-A9 has PIPT D-cache which do not require clean the cache
on creating page table.
Change-Id: I42d528be83ea8def96045c7e575c7b3ed95f5980
Reviewed-on: http://git-master/r/40505
Reviewed-by: Heechul Yun <hyun@nvidia.com>
Tested-by: Heechul Yun <hyun@nvidia.com>
Reviewed-by: Krishna Reddy <vdumpa@nvidia.com>
Reviewed-by: Scott Williams <scwilliams@nvidia.com>
| -rw-r--r-- | arch/arm/include/asm/pgalloc.h | 4 | ||||
| -rw-r--r-- | arch/arm/mm/pgd.c | 3 |
2 files changed, 6 insertions, 1 deletions
diff --git a/arch/arm/include/asm/pgalloc.h b/arch/arm/include/asm/pgalloc.h index b12cc98bbe04..23286e37f8ac 100644 --- a/arch/arm/include/asm/pgalloc.h +++ b/arch/arm/include/asm/pgalloc.h @@ -61,7 +61,9 @@ pte_alloc_one_kernel(struct mm_struct *mm, unsigned long addr) pte = (pte_t *)__get_free_page(PGALLOC_GFP); if (pte) { +#if !defined(CONFIG_CPU_CACHE_V7) || !defined(CONFIG_SMP) clean_dcache_area(pte, sizeof(pte_t) * PTRS_PER_PTE); +#endif pte += PTRS_PER_PTE; } @@ -79,10 +81,12 @@ pte_alloc_one(struct mm_struct *mm, unsigned long addr) pte = alloc_pages(PGALLOC_GFP, 0); #endif if (pte) { +#if !defined(CONFIG_CPU_CACHE_V7) || !defined(CONFIG_SMP) if (!PageHighMem(pte)) { void *page = page_address(pte); clean_dcache_area(page, sizeof(pte_t) * PTRS_PER_PTE); } +#endif pgtable_page_ctor(pte); } diff --git a/arch/arm/mm/pgd.c b/arch/arm/mm/pgd.c index be5f58e153bf..ea92009b91df 100644 --- a/arch/arm/mm/pgd.c +++ b/arch/arm/mm/pgd.c @@ -41,8 +41,9 @@ pgd_t *get_pgd_slow(struct mm_struct *mm) memcpy(new_pgd + FIRST_KERNEL_PGD_NR, init_pgd + FIRST_KERNEL_PGD_NR, (PTRS_PER_PGD - FIRST_KERNEL_PGD_NR) * sizeof(pgd_t)); +#if !defined(CONFIG_CPU_CACHE_V7) || !defined(CONFIG_SMP) clean_dcache_area(new_pgd, PTRS_PER_PGD * sizeof(pgd_t)); - +#endif if (!vectors_high()) { /* * On ARM, first page must always be allocated since it |