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PM: remove s390 specific callbacks

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ARCH_SAVE_PAGE_KEYS has been introduced in order to be able to save
and restore s390 specific storage keys into a hibernation image.
With hibernation support removed from s390 there is no point in
keeping the callbacks.

Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
This commit is contained in:
Heiko Carstens
2020-03-18 20:55:20 +01:00
committed by Vasily Gorbik
parent 394216275c
commit 086b2d7837
3 changed files with 0 additions and 55 deletions
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34
include/linux/suspend.h
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@@ -566,38 +566,4 @@ static inline void queue_up_suspend_work(void) {}
#endif /* !CONFIG_PM_AUTOSLEEP */
#ifdef CONFIG_ARCH_SAVE_PAGE_KEYS
/*
* The ARCH_SAVE_PAGE_KEYS functions can be used by an architecture
* to save/restore additional information to/from the array of page
* frame numbers in the hibernation image. For s390 this is used to
* save and restore the storage key for each page that is included
* in the hibernation image.
*/
unsigned long page_key_additional_pages(unsigned long pages);
int page_key_alloc(unsigned long pages);
void page_key_free(void);
void page_key_read(unsigned long *pfn);
void page_key_memorize(unsigned long *pfn);
void page_key_write(void *address);
#else /* !CONFIG_ARCH_SAVE_PAGE_KEYS */
static inline unsigned long page_key_additional_pages(unsigned long pages)
{
return 0;
}
static inline int page_key_alloc(unsigned long pages)
{
return 0;
}
static inline void page_key_free(void) {}
static inline void page_key_read(unsigned long *pfn) {}
static inline void page_key_memorize(unsigned long *pfn) {}
static inline void page_key_write(void *address) {}
#endif /* !CONFIG_ARCH_SAVE_PAGE_KEYS */
#endif /* _LINUX_SUSPEND_H */