diff options
| 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/include | |
| parent | 0b77d6701cf8d4eb343a83fa8d7eca81a863bb7c (diff) | |
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/include')
| -rw-r--r-- | arch/s390/include/asm/pgalloc.h | 18 |
1 files changed, 2 insertions, 16 deletions
diff --git a/arch/s390/include/asm/pgalloc.h b/arch/s390/include/asm/pgalloc.h index a0d9167519b1..6b341126bebb 100644 --- a/arch/s390/include/asm/pgalloc.h +++ b/arch/s390/include/asm/pgalloc.h @@ -12,6 +12,7 @@ #define _S390_PGALLOC_H #include <linux/threads.h> +#include <linux/string.h> #include <linux/gfp.h> #include <linux/mm.h> @@ -27,24 +28,9 @@ void page_table_free_rcu(struct mmu_gather *, unsigned long *, unsigned long); void page_table_free_pgste(struct page *page); extern int page_table_allocate_pgste; -static inline void clear_table(unsigned long *s, unsigned long val, size_t n) -{ - struct addrtype { char _[256]; }; - int i; - - for (i = 0; i < n; i += 256) { - *s = val; - asm volatile( - "mvc 8(248,%[s]),0(%[s])\n" - : "+m" (*(struct addrtype *) s) - : [s] "a" (s)); - s += 256 / sizeof(long); - } -} - static inline void crst_table_init(unsigned long *crst, unsigned long entry) { - clear_table(crst, entry, _CRST_TABLE_SIZE); + memset64((u64 *)crst, entry, _CRST_ENTRIES); } static inline unsigned long pgd_entry_type(struct mm_struct *mm) |