linux/arch/mips/power/cpu.c
Geert Uytterhoeven 7f8998c7ae nosave: consolidate __nosave_{begin,end} in <asm/sections.h>
The different architectures used their own (and different) declarations:

    extern __visible const void __nosave_begin, __nosave_end;
    extern const void __nosave_begin, __nosave_end;
    extern long __nosave_begin, __nosave_end;

Consolidate them using the first variant in <asm/sections.h>.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-10-09 22:26:04 -04:00

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859 B
C

/*
* Suspend support specific for mips.
*
* Licensed under the GPLv2
*
* Copyright (C) 2009 Lemote Inc.
* Author: Hu Hongbing <huhb@lemote.com>
* Wu Zhangjin <wuzhangjin@gmail.com>
*/
#include <asm/sections.h>
#include <asm/fpu.h>
#include <asm/dsp.h>
static u32 saved_status;
struct pt_regs saved_regs;
void save_processor_state(void)
{
saved_status = read_c0_status();
if (is_fpu_owner())
save_fp(current);
if (cpu_has_dsp)
save_dsp(current);
}
void restore_processor_state(void)
{
write_c0_status(saved_status);
if (is_fpu_owner())
restore_fp(current);
if (cpu_has_dsp)
restore_dsp(current);
}
int pfn_is_nosave(unsigned long pfn)
{
unsigned long nosave_begin_pfn = PFN_DOWN(__pa(&__nosave_begin));
unsigned long nosave_end_pfn = PFN_UP(__pa(&__nosave_end));
return (pfn >= nosave_begin_pfn) && (pfn < nosave_end_pfn);
}