diff options
| author | Jan Beulich <JBeulich@suse.com> | 2013-05-29 08:29:12 -0400 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2013-05-31 07:09:17 -0400 |
| commit | 1d10f6ee602ec5a4bd0c1606ba5f38277da432e1 (patch) | |
| tree | 78400a0f9b9d13313982e3f6537195e9401b8a0c | |
| parent | dcdbe33add56cb659ebf21fb9b6577507e21d952 (diff) | |
x86: __force_order doesn't need to be an actual variable
It being static causes over a dozen instances to be scattered
across the kernel image, with non of them ever being referenced
in any way. Making the variable extern without ever defining it
works as well - all we need is to have the compiler think the
variable is being accessed.
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Link: http://lkml.kernel.org/r/51A610B802000078000D99A0@nat28.tlf.novell.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
| -rw-r--r-- | arch/x86/include/asm/special_insns.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/include/asm/special_insns.h b/arch/x86/include/asm/special_insns.h index 41fc93a2e225..2f4d924fe6c9 100644 --- a/arch/x86/include/asm/special_insns.h +++ b/arch/x86/include/asm/special_insns.h | |||
| @@ -16,7 +16,7 @@ static inline void native_clts(void) | |||
| 16 | * all loads stores around it, which can hurt performance. Solution is to | 16 | * all loads stores around it, which can hurt performance. Solution is to |
| 17 | * use a variable and mimic reads and writes to it to enforce serialization | 17 | * use a variable and mimic reads and writes to it to enforce serialization |
| 18 | */ | 18 | */ |
| 19 | static unsigned long __force_order; | 19 | extern unsigned long __force_order; |
| 20 | 20 | ||
| 21 | static inline unsigned long native_read_cr0(void) | 21 | static inline unsigned long native_read_cr0(void) |
| 22 | { | 22 | { |