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ANDROID: vendor_hooks: account page-mapcount

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Support five hooks as follows to account
the amount of multi-mapped pages in kernel:

- android_vh_show_mapcount_pages
- android_vh_do_traversal_lruvec
- android_vh_update_page_mapcount
- android_vh_add_page_to_lrulist
- android_vh_del_page_from_lrulist

Bug: 236578020
Signed-off-by: Peifeng Li <lipeifeng@oppo.com>
Change-Id: Ia2c7015aab442be7dbb496b8b630b9dff59ab935
This commit is contained in:
Peifeng Li
2022-06-23 14:15:35 +08:00
committed by Suren Baghdasaryan
parent 1d2287f56e
commit 3f775b9367
8 changed files with 129 additions and 23 deletions
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7
include/linux/mm_inline.h
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@@ -4,6 +4,10 @@
#include <linux/huge_mm.h>
#include <linux/swap.h>
#ifndef __GENKSYMS__
#define PROTECT_TRACE_INCLUDE_PATH
#include <trace/hooks/mm.h>
#endif
/**
* page_is_file_lru - should the page be on a file LRU or anon LRU?
@@ -48,6 +52,7 @@ static __always_inline void update_lru_size(struct lruvec *lruvec,
static __always_inline void add_page_to_lru_list(struct page *page,
struct lruvec *lruvec, enum lru_list lru)
{
trace_android_vh_add_page_to_lrulist(page, false, lru);
update_lru_size(lruvec, lru, page_zonenum(page), thp_nr_pages(page));
list_add(&page->lru, &lruvec->lists[lru]);
}
@@ -55,6 +60,7 @@ static __always_inline void add_page_to_lru_list(struct page *page,
static __always_inline void add_page_to_lru_list_tail(struct page *page,
struct lruvec *lruvec, enum lru_list lru)
{
trace_android_vh_add_page_to_lrulist(page, false, lru);
update_lru_size(lruvec, lru, page_zonenum(page), thp_nr_pages(page));
list_add_tail(&page->lru, &lruvec->lists[lru]);
}
@@ -62,6 +68,7 @@ static __always_inline void add_page_to_lru_list_tail(struct page *page,
static __always_inline void del_page_from_lru_list(struct page *page,
struct lruvec *lruvec, enum lru_list lru)
{
trace_android_vh_del_page_from_lrulist(page, false, lru);
list_del(&page->lru);
update_lru_size(lruvec, lru, page_zonenum(page), -thp_nr_pages(page));
}