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x86, hibernate: Extract the common code of 64/32 bit system

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Reduce the hibernation code duplication between x86-32 and x86-64
by extracting the common code into hibernate.c.

Currently only pfn_is_nosave() is the activated common
function in hibernate.c

No functional change.

Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Zhimin Gu <kookoo.gu@intel.com>
Signed-off-by: Chen Yu <yu.c.chen@intel.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Zhimin Gu
2018-09-21 14:26:58 +08:00
committed by Rafael J. Wysocki
parent 8e5b2a3c5a
commit 25862a049e
5 changed files with 256 additions and 236 deletions
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15
arch/x86/power/hibernate_32.c
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@@ -14,9 +14,7 @@
#include <asm/pgtable.h>
#include <asm/mmzone.h>
#include <asm/sections.h>
/* Defined in hibernate_asm_32.S */
extern int restore_image(void);
#include <asm/suspend.h>
/* Pointer to the temporary resume page tables */
pgd_t *resume_pg_dir;
@@ -162,14 +160,3 @@ asmlinkage int swsusp_arch_resume(void)
restore_image();
return 0;
}
/*
* 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_symbol(&__nosave_begin) >> PAGE_SHIFT;
unsigned long nosave_end_pfn = PAGE_ALIGN(__pa_symbol(&__nosave_end)) >> PAGE_SHIFT;
return (pfn >= nosave_begin_pfn) && (pfn < nosave_end_pfn);
}