arm: dts: rockchip: add mpu6050 to rk3288-evb-act8846

[firefly-linux-kernel-4.4.55.git] / fs / mpage.c

diff --git a/fs/mpage.c b/fs/mpage.c
index 1480d3a180370fe3922a7724e613d09b896f9d00..5c65d8942692fd468558c9cac0052216af75a2bb 100644 (file)
--- a/fs/mpage.c
+++ b/fs/mpage.c
@@ -30,6 +30,14 @@
 #include <linux/cleancache.h>
 #include "internal.h"
 
+#define CREATE_TRACE_POINTS
+#include <trace/events/android_fs.h>
+
+EXPORT_TRACEPOINT_SYMBOL(android_fs_datawrite_start);
+EXPORT_TRACEPOINT_SYMBOL(android_fs_datawrite_end);
+EXPORT_TRACEPOINT_SYMBOL(android_fs_dataread_start);
+EXPORT_TRACEPOINT_SYMBOL(android_fs_dataread_end);
+
 /*
  * I/O completion handler for multipage BIOs.
  *
@@ -47,6 +55,16 @@ static void mpage_end_io(struct bio *bio)
        struct bio_vec *bv;
        int i;
 
+       if (trace_android_fs_dataread_end_enabled() &&
+           (bio_data_dir(bio) == READ)) {
+               struct page *first_page = bio->bi_io_vec[0].bv_page;
+
+               if (first_page != NULL)
+                       trace_android_fs_dataread_end(first_page->mapping->host,
+                                                     page_offset(first_page),
+                                                     bio->bi_iter.bi_size);
+       }
+
        bio_for_each_segment_all(bv, bio, i) {
                struct page *page = bv->bv_page;
                page_endio(page, bio_data_dir(bio), bio->bi_error);
@@ -57,6 +75,18 @@ static void mpage_end_io(struct bio *bio)
 
 static struct bio *mpage_bio_submit(int rw, struct bio *bio)
 {
+       if (trace_android_fs_dataread_start_enabled() && (rw == READ)) {
+               struct page *first_page = bio->bi_io_vec[0].bv_page;
+
+               if (first_page != NULL) {
+                       trace_android_fs_dataread_start(
+                               first_page->mapping->host,
+                               page_offset(first_page),
+                               bio->bi_iter.bi_size,
+                               current->pid,
+                               current->comm);
+               }
+       }
        bio->bi_end_io = mpage_end_io;
        guard_bio_eod(rw, bio);
        submit_bio(rw, bio);