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ANDROID: vendor_hooks: Add hooks to record the I/O statistics of swap:

Telusuri Sumber 
android_vh_count_pswpin, Update the write I/O statistics of the swap;
android_vh_count_pswpout, Update the read I/O statistics of the swap;
android_vh_count_swpout_vm_event, Replace count_swpout_vm_event with
adding updating the I/O statistics of the swap;

Bug: 234214858
Signed-off-by: Bing Han <bing.han@transsion.com>
Change-Id: I4eb69db59fe2d822555a508c2f0c6cd5ca9083d1
This commit is contained in:
Bing Han
2022-05-30 15:03:52 +08:00
committed by Treehugger Robot
orang tua 5bc9b10c45
melakukan 851672a4b2
3 mengubah file dengan 26 tambahan dan 3 penghapusan
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17
mm/page_io.c
Melihat File

@@ -25,6 +25,7 @@
#include <linux/psi.h>
#include <linux/uio.h>
#include <linux/sched/task.h>
#include <trace/hooks/mm.h>
static struct bio *get_swap_bio(gfp_t gfp_flags,
struct page *page, bio_end_io_t end_io)
@@ -256,6 +257,7 @@ int __swap_writepage(struct page *page, struct writeback_control *wbc,
struct bio *bio;
int ret;
struct swap_info_struct *sis = page_swap_info(page);
bool skip = false;
VM_BUG_ON_PAGE(!PageSwapCache(page), page);
if (data_race(sis->flags & SWP_FS_OPS)) {
@@ -277,6 +279,7 @@ int __swap_writepage(struct page *page, struct writeback_control *wbc,
unlock_page(page);
ret = mapping->a_ops->direct_IO(&kiocb, &from);
if (ret == PAGE_SIZE) {
trace_android_vh_count_pswpout(sis);
count_vm_event(PSWPOUT);
ret = 0;
} else {
@@ -301,7 +304,9 @@ int __swap_writepage(struct page *page, struct writeback_control *wbc,
ret = bdev_write_page(sis->bdev, swap_page_sector(page), page, wbc);
if (!ret) {
count_swpout_vm_event(page);
trace_android_vh_count_swpout_vm_event(sis, page, &skip);
if (!skip)
count_swpout_vm_event(page);
return 0;
}
@@ -313,7 +318,9 @@ int __swap_writepage(struct page *page, struct writeback_control *wbc,
}
bio->bi_opf = REQ_OP_WRITE | REQ_SWAP | wbc_to_write_flags(wbc);
bio_associate_blkg_from_page(bio, page);
count_swpout_vm_event(page);
trace_android_vh_count_swpout_vm_event(sis, page, &skip);
if (!skip)
count_swpout_vm_event(page);
set_page_writeback(page);
unlock_page(page);
submit_bio(bio);
@@ -352,14 +359,17 @@ int swap_readpage(struct page *page, bool synchronous)
struct address_space *mapping = swap_file->f_mapping;
ret = mapping->a_ops->readpage(swap_file, page);
if (!ret)
if (!ret) {
trace_android_vh_count_pswpin(sis);
count_vm_event(PSWPIN);
}
goto out;
}
if (sis->flags & SWP_SYNCHRONOUS_IO) {
ret = bdev_read_page(sis->bdev, swap_page_sector(page), page);
if (!ret) {
trace_android_vh_count_pswpin(sis);
count_vm_event(PSWPIN);
goto out;
}
@@ -383,6 +393,7 @@ int swap_readpage(struct page *page, bool synchronous)
get_task_struct(current);
bio->bi_private = current;
}
trace_android_vh_count_pswpin(sis);
count_vm_event(PSWPIN);
bio_get(bio);
qc = submit_bio(bio);