aboutsummaryrefslogtreecommitdiffstats
path: root/arch/s390/include/asm/string.h
diff options
context:
space:
mode:
authorHeiko Carstens <heiko.carstens@de.ibm.com>2017-10-04 19:27:05 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2017-10-09 11:18:04 +0200
commit0b77d6701cf8d4eb343a83fa8d7eca81a863bb7c (patch)
treeb3254583a855788629a4c50feacef807d966fbf0 /arch/s390/include/asm/string.h
parent3bdf5679c9e46088a0d677e795afc92b5f77940f (diff)
s390: implement memset16, memset32 & memset64
Provide fast versions of the new memset variants. E.g. the generic memset64 is ten times slower than the optimized version if used on a whole page. 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/asm/string.h')
-rw-r--r--arch/s390/include/asm/string.h22
1 files changed, 22 insertions, 0 deletions
diff --git a/arch/s390/include/asm/string.h b/arch/s390/include/asm/string.h
index 8fb43319693d..aa9c3a0f59ff 100644
--- a/arch/s390/include/asm/string.h
+++ b/arch/s390/include/asm/string.h
@@ -17,6 +17,9 @@
#define __HAVE_ARCH_MEMMOVE /* gcc builtin & arch function */
#define __HAVE_ARCH_MEMSCAN /* inline & arch function */
#define __HAVE_ARCH_MEMSET /* gcc builtin & arch function */
+#define __HAVE_ARCH_MEMSET16 /* arch function */
+#define __HAVE_ARCH_MEMSET32 /* arch function */
+#define __HAVE_ARCH_MEMSET64 /* arch function */
#define __HAVE_ARCH_STRCAT /* inline & arch function */
#define __HAVE_ARCH_STRCMP /* arch function */
#define __HAVE_ARCH_STRCPY /* inline & arch function */
@@ -49,6 +52,25 @@ extern char *strstr(const char *, const char *);
#undef __HAVE_ARCH_STRSEP
#undef __HAVE_ARCH_STRSPN
+void *__memset16(uint16_t *s, uint16_t v, size_t count);
+void *__memset32(uint32_t *s, uint32_t v, size_t count);
+void *__memset64(uint64_t *s, uint64_t v, size_t count);
+
+static inline void *memset16(uint16_t *s, uint16_t v, size_t count)
+{
+ return __memset16(s, v, count * sizeof(v));
+}
+
+static inline void *memset32(uint32_t *s, uint32_t v, size_t count)
+{
+ return __memset32(s, v, count * sizeof(v));
+}
+
+static inline void *memset64(uint64_t *s, uint64_t v, size_t count)
+{
+ return __memset64(s, v, count * sizeof(v));
+}
+
#if !defined(IN_ARCH_STRING_C) && (!defined(CONFIG_FORTIFY_SOURCE) || defined(__NO_FORTIFY))
static inline void *memchr(const void * s, int c, size_t n)

Privacy Policy