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| author | David S. Miller <davem@davemloft.net> | 2012-05-28 08:14:48 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-05-28 08:14:48 +0400 |
| commit | c2e1ff39c106ab026e3feb29c038855b7ed00393 (patch) | |
| tree | e0255b5b9aed8645edc4426f2d4972280910e065 /arch/tile/lib/strlen_64.c | |
| parent | 456d3d42460c1fc20ba0d27442443fcd63aaac35 (diff) | |
| parent | b48b2c3e50433ff6f7e46186daa7f986bd960215 (diff) | |
| download | linux-c2e1ff39c106ab026e3feb29c038855b7ed00393.tar.xz | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux
Pull in Linus's tree to get the commits that blew away
ARCH_USES_GETTIMEOFFSET but didn't update Sparc correctly, so
that I can apply Stephen Rothwell's fix for that mis-merge.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/tile/lib/strlen_64.c')
| -rw-r--r-- | arch/tile/lib/strlen_64.c | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/arch/tile/lib/strlen_64.c b/arch/tile/lib/strlen_64.c index 1c92d46202a8..9583fc3361fa 100644 --- a/arch/tile/lib/strlen_64.c +++ b/arch/tile/lib/strlen_64.c @@ -15,8 +15,7 @@ #include <linux/types.h> #include <linux/string.h> #include <linux/module.h> - -#undef strlen +#include "string-endian.h" size_t strlen(const char *s) { @@ -24,15 +23,13 @@ size_t strlen(const char *s) const uintptr_t s_int = (uintptr_t) s; const uint64_t *p = (const uint64_t *)(s_int & -8); - /* Read the first word, but force bytes before the string to be nonzero. - * This expression works because we know shift counts are taken mod 64. - */ - uint64_t v = *p | ((1ULL << (s_int << 3)) - 1); + /* Read and MASK the first word. */ + uint64_t v = *p | MASK(s_int); uint64_t bits; while ((bits = __insn_v1cmpeqi(v, 0)) == 0) v = *++p; - return ((const char *)p) + (__insn_ctz(bits) >> 3) - s; + return ((const char *)p) + (CFZ(bits) >> 3) - s; } EXPORT_SYMBOL(strlen); |