[PATCH 2/8 v4] x86_64: csum_add for x86_64
From: Tom Herbert <hidden>
Date: 2014-05-02 23:28:17
Subsystem:
the rest, x86 architecture (32-bit and 64-bit) · Maintainers:
Linus Torvalds, Thomas Gleixner, Ingo Molnar, Borislav Petkov, Dave Hansen
Add csum_add function for x86_64. Signed-off-by: Tom Herbert <redacted> --- arch/x86/include/asm/checksum_64.h | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/arch/x86/include/asm/checksum_64.h b/arch/x86/include/asm/checksum_64.h
index e6fd8a0..3581761 100644
--- a/arch/x86/include/asm/checksum_64.h
+++ b/arch/x86/include/asm/checksum_64.h@@ -188,4 +188,11 @@ static inline unsigned add32_with_carry(unsigned a, unsigned b) return a; } +#define HAVE_ARCH_CSUM_ADD +static inline __wsum csum_add(__wsum csum, __wsum addend) +{ + return (__force __wsum)add32_with_carry((__force unsigned)csum, + (__force unsigned)addend); +} + #endif /* _ASM_X86_CHECKSUM_64_H */
--
1.9.1.423.g4596e3a