OCTEON implements __builtin_popcount with a single instruction, so
lets use it.
Signed-off-by: David Daney <ddaney@xxxxxxxxxxxxxxxxxx>
---
.../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 e412777..b952fc7 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
@@ -66,6 +66,14 @@
#define spin_lock_prefetch(x) prefetch(x)
#define PREFETCH_STRIDE 128
+#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;
--
1.6.6.1
