26 lines
643 B
C
26 lines
643 B
C
|
/*
|
||
|
|
* Suspend support specific for power.
|
||
|
|
*
|
||
|
|
* Distribute under GPLv2
|
||
|
|
*
|
||
|
|
* Copyright (c) 2002 Pavel Machek <pavel@suse.cz>
|
||
|
|
* Copyright (c) 2001 Patrick Mochel <mochel@osdl.org>
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/mm.h>
|
||
|
|
#include <asm/page.h>
|
||
|
|
|
||
|
|
/* References to section boundaries */
|
||
|
|
extern const void __nosave_begin, __nosave_end;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* pfn_is_nosave - check if given pfn is in the 'nosave' section
|
||
|
|
*/
|
||
|
|
|
||
|
|
int pfn_is_nosave(unsigned long pfn)
|
||
|
|
{
|
||
|
|
unsigned long nosave_begin_pfn = __pa(&__nosave_begin) >> PAGE_SHIFT;
|
||
|
|
unsigned long nosave_end_pfn = PAGE_ALIGN(__pa(&__nosave_end)) >> PAGE_SHIFT;
|
||
|
|
return (pfn >= nosave_begin_pfn) && (pfn < nosave_end_pfn);
|
||
|
|
}
|