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authorJaegeuk Kim <jaegeuk@kernel.org>2015-03-18 03:58:08 +0300
committerJaegeuk Kim <jaegeuk@kernel.org>2015-04-11 01:08:47 +0300
commit8ce67cb07dbf6ba35aea1e07e8ad1ea004ced27b (patch)
tree519839e12edf66b3341cbb0679f3b25bafba6123 /fs/f2fs
parent3c6c2bebef79999b1827041696dc1881e637e3af (diff)
downloadlinux-8ce67cb07dbf6ba35aea1e07e8ad1ea004ced27b.tar.xz
f2fs: add some tracepoints to debug volatile and atomic writes
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs')
-rw-r--r--fs/f2fs/data.c2
-rw-r--r--fs/f2fs/f2fs.h4
-rw-r--r--fs/f2fs/segment.c4
3 files changed, 10 insertions, 0 deletions
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 486113db97b1..241b98741df9 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -1287,9 +1287,11 @@ int do_write_data_page(struct page *page, struct f2fs_io_info *fio)
need_inplace_update(inode))) {
rewrite_data_page(page, fio);
set_inode_flag(F2FS_I(inode), FI_UPDATE_WRITE);
+ trace_f2fs_do_write_data_page(page, IPU);
} else {
write_data_page(page, &dn, fio);
f2fs_update_extent_cache(&dn);
+ trace_f2fs_do_write_data_page(page, OPU);
set_inode_flag(F2FS_I(inode), FI_APPEND_WRITE);
if (page->index == 0)
set_inode_flag(F2FS_I(inode), FI_FIRST_BLOCK_WRITTEN);
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 9e378179ff93..c9818193e15e 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -556,6 +556,10 @@ enum page_type {
META,
NR_PAGE_TYPE,
META_FLUSH,
+ INMEM, /* the below types are used by tracepoints only. */
+ INMEM_DROP,
+ IPU,
+ OPU,
};
struct f2fs_io_info {
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index eafaf728236b..f939660941bb 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -205,6 +205,8 @@ retry:
list_add_tail(&new->list, &fi->inmem_pages);
inc_page_count(F2FS_I_SB(inode), F2FS_INMEM_PAGES);
mutex_unlock(&fi->inmem_lock);
+
+ trace_f2fs_register_inmem_page(page, INMEM);
}
void commit_inmem_pages(struct inode *inode, bool abort)
@@ -238,11 +240,13 @@ void commit_inmem_pages(struct inode *inode, bool abort)
f2fs_wait_on_page_writeback(cur->page, DATA);
if (clear_page_dirty_for_io(cur->page))
inode_dec_dirty_pages(inode);
+ trace_f2fs_commit_inmem_page(cur->page, INMEM);
do_write_data_page(cur->page, &fio);
submit_bio = true;
}
f2fs_put_page(cur->page, 1);
} else {
+ trace_f2fs_commit_inmem_page(cur->page, INMEM_DROP);
put_page(cur->page);
}
radix_tree_delete(&fi->inmem_root, cur->page->index);