From 1d1929c7662d5da3badcf0df2ca5c9b2dc15db97 Mon Sep 17 00:00:00 2001 From: David Daney Date: Fri, 25 Jun 2010 16:46:08 -0700 Subject: [PATCH] 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 To: linux-mips@linux-mips.org Cc: David Daney Patchwork: https://patchwork.linux-mips.org/patch/1431/ Signed-off-by: Ralf Baechle --- .../asm/mach-cavium-octeon/cpu-feature-overrides.h | 8 ++++++++ 1 file changed, 8 insertions(+) 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;