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ANDROID: vendor_hooks: Add hooks to extend struct swap_slots_cache

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Three vendor hooks are provided to extend struct swap_slots_cache.
The extended data are used to record the information of the
specified reclaimed swap location:
1) android_vh_alloc_swap_slot_cache, replace the function
alloc_swap_slot_cache adding allocation of the extension
of struct swap_slots_cache;
2) android_vh_drain_slots_cache_cpu, replace the function
drain_slots_cache_cpu adding the initialization of the
extension of struct swap_slots_cache;
3) android_vh_get_swap_page, replace the function get_swap_page,
according to the reclaimed location information of the page,
get the the swap page from the specified swap location;

Bug: 234214858
Signed-off-by: Bing Han <bing.han@transsion.com>
Change-Id: I3bce6e8cf255df1d879b7c4022d54981cce7c273
This commit is contained in:
Bing Han
2022-05-30 16:28:05 +08:00
committed by Treehugger Robot
parent 4506bcbba5
commit d4eef93a9d
3 changed files with 32 additions and 1 deletions
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3
drivers/android/vendor_hooks.c
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@@ -416,7 +416,10 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_page_referenced_one_end);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_count_pswpin);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_count_pswpout);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_count_swpout_vm_event);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_drain_slots_cache_cpu);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_alloc_swap_slot_cache);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_free_swap_slot);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_get_swap_page);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_page_isolated_for_reclaim);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_inactive_is_low);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_snapshot_refaults);