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| author |   Heiko Carstens <heiko.carstens@de.ibm.com> | 2017-10-04 19:27:07 +0200 |
|---|---|---|
| committer |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2017-10-09 11:18:06 +0200 |
| commit | 41879ff65d8b025eace44610be0b07f678fb3224 (patch) | |
| tree | 4759c44017760195a4bdfce5944376a017ade3ca /arch/s390/mm | |
| parent | s390: implement memset16, memset32 & memset64 (diff) | |
| download | linux-dev-41879ff65d8b025eace44610be0b07f678fb3224.tar.xz linux-dev-41879ff65d8b025eace44610be0b07f678fb3224.zip | |
s390/mm: use memset64 instead of clear_table
Use memset64 instead of the (now) open-coded variant clear_table.
Performance wise there is no difference.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/mm')
| -rw-r--r-- | arch/s390/mm/pgalloc.c | 14 | ||||
| -rw-r--r-- | arch/s390/mm/vmem.c | 2 |
2 files changed, 8 insertions, 8 deletions
diff --git a/arch/s390/mm/pgalloc.c b/arch/s390/mm/pgalloc.c index 05f1f27e6708..ffd87628a637 100644 --- a/arch/s390/mm/pgalloc.c +++ b/arch/s390/mm/pgalloc.c @@ -158,13 +158,13 @@ static inline unsigned int atomic_xor_bits(atomic_t *v, unsigned int bits) struct page *page_table_alloc_pgste(struct mm_struct *mm) { struct page *page; - unsigned long *table; + u64 *table; page = alloc_page(GFP_KERNEL); if (page) { - table = (unsigned long *) page_to_phys(page); - clear_table(table, _PAGE_INVALID, PAGE_SIZE/2); - clear_table(table + PTRS_PER_PTE, 0, PAGE_SIZE/2); + table = (u64 *)page_to_phys(page); + memset64(table, _PAGE_INVALID, PTRS_PER_PTE); + memset64(table + PTRS_PER_PTE, 0, PTRS_PER_PTE); } return page; } @@ -221,12 +221,12 @@ unsigned long *page_table_alloc(struct mm_struct *mm) if (mm_alloc_pgste(mm)) { /* Return 4K page table with PGSTEs */ atomic_set(&page->_mapcount, 3); - clear_table(table, _PAGE_INVALID, PAGE_SIZE/2); - clear_table(table + PTRS_PER_PTE, 0, PAGE_SIZE/2); + memset64((u64 *)table, _PAGE_INVALID, PTRS_PER_PTE); + memset64((u64 *)table + PTRS_PER_PTE, 0, PTRS_PER_PTE); } else { /* Return the first 2K fragment of the page */ atomic_set(&page->_mapcount, 1); - clear_table(table, _PAGE_INVALID, PAGE_SIZE); + memset64((u64 *)table, _PAGE_INVALID, 2 * PTRS_PER_PTE); spin_lock_bh(&mm->context.lock); list_add(&page->lru, &mm->context.pgtable_list); spin_unlock_bh(&mm->context.lock); diff --git a/arch/s390/mm/vmem.c b/arch/s390/mm/vmem.c index c0af0d7b6e5f..2e84977796a2 100644 --- a/arch/s390/mm/vmem.c +++ b/arch/s390/mm/vmem.c @@ -59,7 +59,7 @@ pte_t __ref *vmem_pte_alloc(void) pte = (pte_t *) memblock_alloc(size, size); if (!pte) return NULL; - clear_table((unsigned long *) pte, _PAGE_INVALID, size); + memset64((u64 *)pte, _PAGE_INVALID, PTRS_PER_PTE); return pte; } |