Eric Lee / linux-smarc-t335x-v3.2

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Commit 3013449243adc3421b507696e5d247a3d292ee0c

Authored by Jeff Dike
Committed by Linus Torvalds
1 parent 2030c0fd3d
Exists in master and in 4 other branches v3.2_AM335xPSP_04.06.00.11, v3.2_NEWT335xPSP_04.06.00.11, v3.2_SBC_SMARTMEN, v3.2_SMARCT335xPSP_04.06.00.11

[PATCH] uml: UML/i386 cmpxchg fix 

Using native cmpxchg offers a slight performance improvement in uml/i386.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Showing 2 changed files with 4 additions and 2 deletions Side-by-side Diff

arch/um/Kconfig.i386
Diff comments   View file @ 3013449
... ... @@ -42,4 +42,8 @@
42 42 config ARCH_REUSE_HOST_VSYSCALL_AREA
43 43 bool
44 44 default y
  45 +
  46 +config X86_CMPXCHG
  47 + bool
  48 + default y
include/asm-um/system-i386.h
Diff comments   View file @ 3013449
... ... @@ -3,7 +3,5 @@
3 3  
4 4 #include "asm/system-generic.h"
5 5  
6   -#define __HAVE_ARCH_CMPXCHG 1
7   -
8 6 #endif