linux/arch/mn10300/include/asm/irq_regs.h
David Howells 7c7fcf762e MN10300: Save frame pointer in thread_info struct rather than global var
Save the current exception frame pointer in the thread_info struct rather than
in a global variable as the latter makes SMP tricky, especially when preemption
is also enabled.

This also replaces __frame with current_frame() and rearranges header file
inclusions to make it all compile.

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Akira Takeuchi <takeuchi.akr@jp.panasonic.com>
2010-10-27 17:29:01 +01:00

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C

/* MN10300 IRQ registers pointer definition
*
* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public Licence
* as published by the Free Software Foundation; either version
* 2 of the Licence, or (at your option) any later version.
*/
#ifndef _ASM_IRQ_REGS_H
#define _ASM_IRQ_REGS_H
/*
* Per-cpu current frame pointer - the location of the last exception frame on
* the stack
*/
#define ARCH_HAS_OWN_IRQ_REGS
#ifndef __ASSEMBLY__
static inline __attribute__((const))
struct pt_regs *get_irq_regs(void)
{
return current_frame();
}
#endif
#endif /* _ASM_IRQ_REGS_H */