mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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d650a51485
Impact: cleanup, better irq_regs code generation for x86_64 Make 64-bit use the same optimizations as 32-bit. Signed-off-by: Brian Gerst <brgerst@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
32 lines
636 B
C
32 lines
636 B
C
/*
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* Per-cpu current frame pointer - the location of the last exception frame on
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* the stack, stored in the per-cpu area.
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*
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* Jeremy Fitzhardinge <jeremy@goop.org>
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*/
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#ifndef _ASM_X86_IRQ_REGS_H
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#define _ASM_X86_IRQ_REGS_H
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#include <asm/percpu.h>
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#define ARCH_HAS_OWN_IRQ_REGS
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DECLARE_PER_CPU(struct pt_regs *, irq_regs);
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static inline struct pt_regs *get_irq_regs(void)
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{
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return percpu_read(irq_regs);
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}
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static inline struct pt_regs *set_irq_regs(struct pt_regs *new_regs)
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{
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struct pt_regs *old_regs;
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old_regs = get_irq_regs();
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percpu_write(irq_regs, new_regs);
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return old_regs;
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}
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#endif /* _ASM_X86_IRQ_REGS_32_H */
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