Commit 1d10f6ee authored May 29, 2013 by Jan Beulich Committed by Ingo Molnar May 31, 2013

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>

parent dcdbe33a

arch/x86/include/asm/special_insns.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -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)
		{