Commit cd3adf52 authored Jan 16, 2009 by Tejun Heo Committed by Ingo Molnar Jan 16, 2009

x86_64: initialize this_cpu_off to __per_cpu_load



On x86_64, if get_per_cpu_var() is used before per cpu area is setup
(if lockdep is turned on, it happens), it needs this_cpu_off to point
to __per_cpu_load.  Initialize accordingly.

Signed-off-by: Tejun Heo <tj@kernel.org>

parent a338af2c

arch/x86/kernel/smpcommon.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -3,8 +3,13 @@
		*/
		#include <linux/module.h>
		#include <asm/smp.h>
		#include <asm/sections.h>

		#ifdef CONFIG_X86_64
		DEFINE_PER_CPU(unsigned long, this_cpu_off) = (unsigned long)__per_cpu_load;
		#else
		DEFINE_PER_CPU(unsigned long, this_cpu_off);
		#endif
		EXPORT_PER_CPU_SYMBOL(this_cpu_off);

		#ifdef CONFIG_X86_32