diff options
Diffstat (limited to 'fs/mpage.c')
-rw-r--r-- | fs/mpage.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/fs/mpage.c b/fs/mpage.c index b7e7f570733a..177a156cd06b 100644 --- a/fs/mpage.c +++ b/fs/mpage.c @@ -32,6 +32,16 @@ #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); +EXPORT_TRACEPOINT_SYMBOL(android_fs_fsync_start); +EXPORT_TRACEPOINT_SYMBOL(android_fs_fsync_end); + /* * I/O completion handler for multipage BIOs. * @@ -49,6 +59,16 @@ 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, op_is_write(bio_op(bio)), @@ -60,6 +80,24 @@ static void mpage_end_io(struct bio *bio) static struct bio *mpage_bio_submit(int op, int op_flags, struct bio *bio) { + if (trace_android_fs_dataread_start_enabled() && (op == REQ_OP_READ)) { + struct page *first_page = bio->bi_io_vec[0].bv_page; + + if (first_page != NULL) { + char *path, pathbuf[MAX_TRACE_PATHBUF_LEN]; + + path = android_fstrace_get_pathname(pathbuf, + MAX_TRACE_PATHBUF_LEN, + first_page->mapping->host); + trace_android_fs_dataread_start( + first_page->mapping->host, + page_offset(first_page), + bio->bi_iter.bi_size, + current->pid, + path, + current->comm); + } + } bio->bi_end_io = mpage_end_io; bio_set_op_attrs(bio, op, op_flags); guard_bio_eod(op, bio); |