Messages in this thread Patch in this message | | | Date | Thu, 27 Feb 2014 08:47:58 +0000 | From | "Jan Beulich" <> | Subject | [PATCH v2 3/3] x86/hash: cleanup |
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- simplify switch statement - add __init annotation to setup_arch_fast_hash()
Signed-off-by: Jan Beulich <jbeulich@suse.com> Cc: Francesco Fusco <ffusco@redhat.com> Cc: Daniel Borkmann <dborkman@redhat.com> Cc: Thomas Graf <tgraf@redhat.com> Cc: David S. Miller <davem@davemloft.net> --- arch/x86/lib/hash.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-)
--- 3.14-rc4-x86-hash-crc32.orig/arch/x86/lib/hash.c +++ 3.14-rc4-x86-hash-crc32/arch/x86/lib/hash.c @@ -32,6 +32,7 @@ */ #include <linux/hash.h> +#include <linux/init.h> #include <asm/processor.h> #include <asm/cpufeature.h> @@ -55,17 +56,16 @@ static u32 intel_crc4_2_hash(const void for (i = 0; i < len / 4; i++) seed = crc32_u32(seed, *p32++); - switch (3 - (len & 0x03)) { - case 0: + switch (len & 3) { + case 3: tmp |= *((const u8 *) p32 + 2) << 16; /* fallthrough */ - case 1: + case 2: tmp |= *((const u8 *) p32 + 1) << 8; /* fallthrough */ - case 2: + case 1: tmp |= *((const u8 *) p32); seed = crc32_u32(seed, tmp); - default: break; } @@ -83,7 +83,7 @@ static u32 intel_crc4_2_hash2(const u32 return seed; } -void setup_arch_fast_hash(struct fast_hash_ops *ops) +void __init setup_arch_fast_hash(struct fast_hash_ops *ops) { if (cpu_has_xmm4_2) { ops->hash = intel_crc4_2_hash;
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