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ANDROID: vendor_hook: Add hook in swap_slots

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Provide a vendor hook android_vh_swap_slot_cache_active to
pass the active status of swap_slots_cache. This status
will be used in the process of reclaiming the pages that
is required to be reclaimed to a specified swap location.

Bug: 234214858
Signed-off-by: Bing Han <bing.han@transsion.com>
Change-Id: I8211760e0f37fe4a514f6ceaae9993925da8cd6d
This commit is contained in:
Bing Han
2022-06-11 16:06:16 +08:00
committed by Treehugger Robot
parent 034877c195
commit f6f18f7ffa
3 changed files with 6 additions and 0 deletions
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1
drivers/android/vendor_hooks.c
View File

@@ -416,6 +416,7 @@ 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_swap_slot_cache_active);
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);

3
include/trace/hooks/mm.h
View File

@@ -177,6 +177,9 @@ DECLARE_HOOK(android_vh_count_pswpout,
DECLARE_HOOK(android_vh_count_swpout_vm_event,
TP_PROTO(struct swap_info_struct *sis, struct page *page, bool *skip),
TP_ARGS(sis, page, skip));
DECLARE_HOOK(android_vh_swap_slot_cache_active,
TP_PROTO(bool swap_slot_cache_active),
TP_ARGS(swap_slot_cache_active));
DECLARE_HOOK(android_vh_drain_slots_cache_cpu,
TP_PROTO(struct swap_slots_cache *cache, unsigned int type,
bool free_slots, bool *skip),

2
mm/swap_slots.c
View File

@@ -55,6 +55,7 @@ static void deactivate_swap_slots_cache(void)
{
mutex_lock(&swap_slots_cache_mutex);
swap_slot_cache_active = false;
trace_android_vh_swap_slot_cache_active(false);
__drain_swap_slots_cache(SLOTS_CACHE|SLOTS_CACHE_RET);
mutex_unlock(&swap_slots_cache_mutex);
}
@@ -63,6 +64,7 @@ static void reactivate_swap_slots_cache(void)
{
mutex_lock(&swap_slots_cache_mutex);
swap_slot_cache_active = true;
trace_android_vh_swap_slot_cache_active(true);
mutex_unlock(&swap_slots_cache_mutex);
}