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| author | Hitoshi Mitake <mitake.hitoshi@lab.ntt.co.jp> | 2015-11-06 16:32:08 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-11-06 17:50:42 -0800 |
| commit | a9cd207c23ca4fa5bd5f1092e867e87542e349a3 (patch) | |
| tree | e56c2224b609c25846b2bb0efcfa4e000b54cda7 /fs | |
| parent | 83eec5e6dd10f0b1ab83ee660c8be883b3da7ba8 (diff) | |
nilfs2: add tracepoints for analyzing reading and writing metadata files
This patch adds tracepoints for analyzing requests of reading and writing
metadata files. The tracepoints cover every in-place mdt files (cpfile,
sufile, and datfile).
Example of tracing mdt_insert_new_block():
cp-14635 [000] ...1 30598.199309: nilfs2_mdt_insert_new_block: inode = ffff88022a8d0178 ino = 3 block = 155
cp-14635 [000] ...1 30598.199520: nilfs2_mdt_insert_new_block: inode = ffff88022a8d0178 ino = 3 block = 5
cp-14635 [000] ...1 30598.200828: nilfs2_mdt_insert_new_block: inode = ffff88022a8d0178 ino = 3 block = 253
Signed-off-by: Hitoshi Mitake <mitake.hitoshi@lab.ntt.co.jp>
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: TK Kato <TK.Kato@wdc.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/nilfs2/mdt.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/nilfs2/mdt.c b/fs/nilfs2/mdt.c index dee34d990281..1125f40233ff 100644 --- a/fs/nilfs2/mdt.c +++ b/fs/nilfs2/mdt.c @@ -33,6 +33,7 @@ #include "page.h" #include "mdt.h" +#include <trace/events/nilfs2.h> #define NILFS_MDT_MAX_RA_BLOCKS (16 - 1) @@ -68,6 +69,9 @@ nilfs_mdt_insert_new_block(struct inode *inode, unsigned long block, set_buffer_uptodate(bh); mark_buffer_dirty(bh); nilfs_mdt_mark_dirty(inode); + + trace_nilfs2_mdt_insert_new_block(inode, inode->i_ino, block); + return 0; } @@ -158,6 +162,8 @@ nilfs_mdt_submit_block(struct inode *inode, unsigned long blkoff, get_bh(bh); submit_bh(mode, bh); ret = 0; + + trace_nilfs2_mdt_submit_block(inode, inode->i_ino, blkoff, mode); out: get_bh(bh); *out_bh = bh; |