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Linux/arch/powerpc/kernel/suspend.c

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  1 /*
  2  * Suspend support specific for power.
  3  *
  4  * Distribute under GPLv2
  5  *
  6  * Copyright (c) 2002 Pavel Machek <pavel@ucw.cz>
  7  * Copyright (c) 2001 Patrick Mochel <mochel@osdl.org>
  8  */
  9 
 10 #include <linux/mm.h>
 11 #include <asm/page.h>
 12 #include <asm/sections.h>
 13 
 14 /*
 15  *      pfn_is_nosave - check if given pfn is in the 'nosave' section
 16  */
 17 
 18 int pfn_is_nosave(unsigned long pfn)
 19 {
 20         unsigned long nosave_begin_pfn = __pa(&__nosave_begin) >> PAGE_SHIFT;
 21         unsigned long nosave_end_pfn = PAGE_ALIGN(__pa(&__nosave_end)) >> PAGE_SHIFT;
 22         return (pfn >= nosave_begin_pfn) && (pfn < nosave_end_pfn);
 23 }
 24 

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