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ANDROID: add vendor fields to swap_info_struct to record swap stats

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struct swap_info_struct :: ANDROID_VENDOR_DATA(1)
	It is pointer to a struct to record the following message:
	1) total swapin pages;
	2) total swapout pages;
	3) total number of cold pages swapin;
	4) total number of swapout pages, specified by userspace;
	5) total number of swapout pages, specified by kernel;
	6) the maxmium number of swapout pages;
	7) the maxmium number of swapout pages allowed by kernel;
	8) the maxmium number of swapout pages allowed by framework;

Bug: 225795494
Change-Id: I779145a83d87e339db86ec81c7f962be99946afb
Signed-off-by: Bing Han <bing.han@transsion.com>
This commit is contained in:
Bing Han
2022-04-15 08:09:32 +00:00
committed by Todd Kjos
parent fae5207ecc
commit af4eb0e377
1 changed files with 1 additions and 0 deletions
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include/linux/swap.h
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@@ -285,6 +285,7 @@ struct swap_info_struct {
*/
struct work_struct discard_work; /* discard worker */
struct swap_cluster_list discard_clusters; /* discard clusters list */
ANDROID_VENDOR_DATA(1);
struct plist_node avail_lists[]; /*
* entries in swap_avail_heads, one
* entry per node.