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ANDROID: vendor_hook: Add hook in page_referenced_one()

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Add android_vh_page_referenced_one_end at the end of function
page_referenced_one to update the status that whether the page
need to be reclaimed to a specified swap location.

Bug: 234214858
Signed-off-by: Bing Han <bing.han@transsion.com>
Change-Id: Ia06a229956328ef776da5d163708dcb011a327fb
This commit is contained in:
Bing Han
2022-05-30 15:09:17 +08:00
committed by Treehugger Robot
parent 851672a4b2
commit 1aa26f0017
3 changed files with 5 additions and 0 deletions
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1
drivers/android/vendor_hooks.c
View File

@@ -412,6 +412,7 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_cow_user_page);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_swapin_add_anon_rmap);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_waiting_for_page_migration);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_migrate_page_states);
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);

3
include/trace/hooks/mm.h
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@@ -164,6 +164,9 @@ DECLARE_HOOK(android_vh_waiting_for_page_migration,
DECLARE_HOOK(android_vh_migrate_page_states,
TP_PROTO(struct page *page, struct page *newpage),
TP_ARGS(page, newpage));
DECLARE_HOOK(android_vh_page_referenced_one_end,
TP_PROTO(struct vm_area_struct *vma, struct page *page, int referenced),
TP_ARGS(vma, page, referenced));
DECLARE_HOOK(android_vh_count_pswpin,
TP_PROTO(struct swap_info_struct *sis),
TP_ARGS(sis));

1
mm/rmap.c
View File

@@ -819,6 +819,7 @@ static bool page_referenced_one(struct page *page, struct vm_area_struct *vma,
pra->vm_flags |= vma->vm_flags;
}
trace_android_vh_page_referenced_one_end(vma, page, referenced);
if (!pra->mapcount)
return false; /* To break the loop */