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ANDROID: mm: export symbols used in vendor hook android_vh_get_swap_page()

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3 symbols are exported to be used in vendor hook android_vh_get_swap_page:
1)check_cache_active, used to get swap page from the specified
swap location, it's usage is similar to the usage in get_swap_page
2)scan_swap_map_slots, used to get swap page from the specified swap,
it's usage is similar to get_swap_pages
3)swap_alloc_cluster, used to get swap page from the specified swap,
it's usage is similar to get_swap_pages

Bug: 234214858
Signed-off-by: Bing Han <bing.han@transsion.com>
Change-Id: Ie24c5d32a16c7cb87905d034095ec8fb070dbe0f
This commit is contained in:
Bing Han
2022-06-10 19:40:35 +08:00
committed by Treehugger Robot
parent d4eef93a9d
commit 06c2766cbc
2 changed files with 6 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
mm/swap_slots.c
View File

@@ -90,7 +90,7 @@ void reenable_swap_slots_cache_unlock(void)
mutex_unlock(&swap_slots_cache_enable_mutex); mutex_unlock(&swap_slots_cache_enable_mutex);
} }
static bool check_cache_active(void) bool check_cache_active(void)
{ {
long pages; long pages;
@@ -111,6 +111,7 @@ static bool check_cache_active(void)
out: out:
return swap_slot_cache_active; return swap_slot_cache_active;
} }
EXPORT_SYMBOL_GPL(check_cache_active);
static int alloc_swap_slot_cache(unsigned int cpu) static int alloc_swap_slot_cache(unsigned int cpu)
{ {

6
mm/swapfile.c
View File

@@ -772,7 +772,7 @@ static void set_cluster_next(struct swap_info_struct *si, unsigned long next)
this_cpu_write(*si->cluster_next_cpu, next); this_cpu_write(*si->cluster_next_cpu, next);
} }
static int scan_swap_map_slots(struct swap_info_struct *si, int scan_swap_map_slots(struct swap_info_struct *si,
unsigned char usage, int nr, unsigned char usage, int nr,
swp_entry_t slots[]) swp_entry_t slots[])
{ {
@@ -988,8 +988,9 @@ no_page:
si->flags -= SWP_SCANNING; si->flags -= SWP_SCANNING;
return n_ret; return n_ret;
} }
EXPORT_SYMBOL_GPL(scan_swap_map_slots);
static int swap_alloc_cluster(struct swap_info_struct *si, swp_entry_t *slot) int swap_alloc_cluster(struct swap_info_struct *si, swp_entry_t *slot)
{ {
unsigned long idx; unsigned long idx;
struct swap_cluster_info *ci; struct swap_cluster_info *ci;
@@ -1023,6 +1024,7 @@ static int swap_alloc_cluster(struct swap_info_struct *si, swp_entry_t *slot)
return 1; return 1;
} }
EXPORT_SYMBOL_GPL(swap_alloc_cluster);
static void swap_free_cluster(struct swap_info_struct *si, unsigned long idx) static void swap_free_cluster(struct swap_info_struct *si, unsigned long idx)
{ {