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| author | Namjae Jeon <namjae.jeon@samsung.com> | 2013-04-23 16:38:02 +0900 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk.kim@samsung.com> | 2013-04-23 16:40:43 +0900 |
| commit | 848753aa3b19a6513315ca54f22ba1e2732ea94a (patch) | |
| tree | ce20c2bc01505b67a9ce3fe0291b84bff22dde5d /fs/f2fs | |
| parent | 51dd62493477923723c797c6da60121ed39900ed (diff) | |
| download | linux-stable-848753aa3b19a6513315ca54f22ba1e2732ea94a.tar.gz linux-stable-848753aa3b19a6513315ca54f22ba1e2732ea94a.tar.bz2 linux-stable-848753aa3b19a6513315ca54f22ba1e2732ea94a.zip | |
f2fs: add tracepoint for tracing the page i/o
Add tracepoints for page i/o operations and block allocation
tracing during page read operation.
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Pankaj Kumar <pankaj.km@samsung.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
[Jaegeuk: combine and modify the tracepoint structures]
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
Diffstat (limited to 'fs/f2fs')
| -rw-r--r-- | fs/f2fs/data.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 3c31ec7d633d..8e8b14d714fc 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -21,6 +21,7 @@ #include "f2fs.h" #include "node.h" #include "segment.h" +#include <trace/events/f2fs.h> /* * Lock ordering for the change of data block address: @@ -348,6 +349,8 @@ int f2fs_readpage(struct f2fs_sb_info *sbi, struct page *page, struct block_device *bdev = sbi->sb->s_bdev; struct bio *bio; + trace_f2fs_readpage(page, blk_addr, type); + down_read(&sbi->bio_sem); /* Allocate a new bio */ @@ -388,14 +391,18 @@ static int get_data_block_ro(struct inode *inode, sector_t iblock, /* Get the page offset from the block offset(iblock) */ pgofs = (pgoff_t)(iblock >> (PAGE_CACHE_SHIFT - blkbits)); - if (check_extent_cache(inode, pgofs, bh_result)) + if (check_extent_cache(inode, pgofs, bh_result)) { + trace_f2fs_get_data_block(inode, iblock, bh_result, 0); return 0; + } /* When reading holes, we need its node page */ set_new_dnode(&dn, inode, NULL, NULL, 0); err = get_dnode_of_data(&dn, pgofs, LOOKUP_NODE_RA); - if (err) + if (err) { + trace_f2fs_get_data_block(inode, iblock, bh_result, err); return (err == -ENOENT) ? 0 : err; + } /* It does not support data allocation */ BUG_ON(create); @@ -420,6 +427,7 @@ static int get_data_block_ro(struct inode *inode, sector_t iblock, bh_result->b_size = (i << blkbits); } f2fs_put_dnode(&dn); + trace_f2fs_get_data_block(inode, iblock, bh_result, 0); return 0; } |