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| author | Jan Beulich <JBeulich@suse.com> | 2013-05-29 13:29:12 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2013-05-31 13:09:17 +0200 |
| commit | 1d10f6ee602ec5a4bd0c1606ba5f38277da432e1 (patch) | |
| tree | 78400a0f9b9d13313982e3f6537195e9401b8a0c /arch/x86/include/asm/special_insns.h | |
| parent | dcdbe33add56cb659ebf21fb9b6577507e21d952 (diff) | |
| download | linux-0-day-1d10f6ee602ec5a4bd0c1606ba5f38277da432e1.tar.gz linux-0-day-1d10f6ee602ec5a4bd0c1606ba5f38277da432e1.tar.xz | |
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>
Diffstat (limited to 'arch/x86/include/asm/special_insns.h')
| -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 41fc93a2e225d..2f4d924fe6c9f 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) * all loads stores around it, which can hurt performance. Solution is to * use a variable and mimic reads and writes to it to enforce serialization */ -static unsigned long __force_order; +extern unsigned long __force_order; static inline unsigned long native_read_cr0(void) { |