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* [PATCH v2 3/3] x86/hash: cleanup
@ 2014-02-27  8:47 Jan Beulich
  2014-02-27  9:28 ` Daniel Borkmann
                   ` (2 more replies)
  0 siblings, 3 replies; 4+ messages in thread
From: Jan Beulich @ 2014-02-27  8:47 UTC (permalink / raw)
  To: mingo, tglx, Jan Beulich, hpa
  Cc: davem, dborkman, ffusco, tgraf, linux-kernel

- 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;




^ permalink raw reply	[flat|nested] 4+ messages in thread

end of thread, other threads:[~2014-03-19 23:55 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2014-02-27  8:47 [PATCH v2 3/3] x86/hash: cleanup Jan Beulich
2014-02-27  9:28 ` Daniel Borkmann
2014-03-19 23:48 ` [tip:x86/hash] x86, hash: Simplify switch, add __init annotation tip-bot for Jan Beulich
2014-03-19 23:54 ` tip-bot for Jan Beulich

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