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| author |   David Daney <ddaney@caviumnetworks.com> | 2010-06-25 16:46:08 -0700 |
|---|---|---|
| committer |   Ralf Baechle <ralf@linux-mips.org> | 2010-08-05 13:26:03 +0100 |
| commit | 1d1929c7662d5da3badcf0df2ca5c9b2dc15db97 (patch) | |
| tree | 15e91f7ccc3995ff291c146a61fe92325e8afc84 /arch | |
| parent | MIPS: Create and use asm/arch_hweight.h (diff) | |
| download | linux-dev-1d1929c7662d5da3badcf0df2ca5c9b2dc15db97.tar.xz linux-dev-1d1929c7662d5da3badcf0df2ca5c9b2dc15db97.zip | |
MIPS: Octeon: Define ARCH_HAS_USABLE_BUILTIN_POPCOUNT for OCTEON.
OCTEON implements __builtin_popcount with a single instruction, so lets use it.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Cc: David Daney <ddaney@caviumnetworks.com>
Patchwork: https://patchwork.linux-mips.org/patch/1431/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/mips/include/asm/mach-cavium-octeon/cpu-feature-overrides.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/mips/include/asm/mach-cavium-octeon/cpu-feature-overrides.h b/arch/mips/include/asm/mach-cavium-octeon/cpu-feature-overrides.h index bbf054042395..2a7ea90fee2a 100644 --- a/arch/mips/include/asm/mach-cavium-octeon/cpu-feature-overrides.h +++ b/arch/mips/include/asm/mach-cavium-octeon/cpu-feature-overrides.h @@ -77,6 +77,14 @@ static inline int read_current_timer(unsigned long *result) return 0; } +#ifdef __OCTEON__ +/* + * All gcc versions that have OCTEON support define __OCTEON__ and have the + * __builtin_popcount support. + */ +#define ARCH_HAS_USABLE_BUILTIN_POPCOUNT 1 +#endif + static inline int octeon_has_saa(void) { int id; |