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ANDROID: vendor hooks: Export symbols for bootloader based hibernation

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To add encryption support to bootloader based hibernation, export
symbols snapshot_get_image_size and alloc_swapdev_block.

These symbols can be used by vendor implementation to be called before
and after storing the snapshot image.

Bug: 279879797
Change-Id: I0d44bf833a97fce5bc5213712b2b2523a9e22607
Signed-off-by: Shreyas K K <quic_shrekk@quicinc.com>
This commit is contained in:
Shreyas K K 2022-12-05 15:59:49 +05:30 committed by Carlos Llamas
parent 17537ba480
commit 62db17973a
3 changed files with 3 additions and 0 deletions
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1
include/linux/swap.h
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@ -518,6 +518,7 @@ extern int init_swap_address_space(unsigned int type, unsigned long nr_pages);
extern void exit_swap_address_space(unsigned int type); extern void exit_swap_address_space(unsigned int type);
extern struct swap_info_struct *get_swap_device(swp_entry_t entry); extern struct swap_info_struct *get_swap_device(swp_entry_t entry);
sector_t swap_page_sector(struct page *page); sector_t swap_page_sector(struct page *page);
extern sector_t alloc_swapdev_block(int swap);
static inline void put_swap_device(struct swap_info_struct *si) static inline void put_swap_device(struct swap_info_struct *si)
{ {

1
kernel/power/snapshot.c
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@ -2082,6 +2082,7 @@ unsigned long snapshot_get_image_size(void)
{ {
return nr_copy_pages + nr_meta_pages + 1; return nr_copy_pages + nr_meta_pages + 1;
} }
EXPORT_SYMBOL_GPL(snapshot_get_image_size);
static int init_header(struct swsusp_info *info) static int init_header(struct swsusp_info *info)
{ {

1
kernel/power/swap.c
View File

@ -188,6 +188,7 @@ sector_t alloc_swapdev_block(int swap)
} }
return 0; return 0;
} }
EXPORT_SYMBOL_GPL(alloc_swapdev_block);
/* /*
* free_all_swap_pages - free swap pages allocated for saving image data. * free_all_swap_pages - free swap pages allocated for saving image data.