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authorHitoshi Mitake <mitake.hitoshi@lab.ntt.co.jp>2015-11-06 16:32:08 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2015-11-06 17:50:42 -0800
commita9cd207c23ca4fa5bd5f1092e867e87542e349a3 (patch)
treee56c2224b609c25846b2bb0efcfa4e000b54cda7 /fs/nilfs2
parent83eec5e6dd10f0b1ab83ee660c8be883b3da7ba8 (diff)
downloadop-kernel-dev-a9cd207c23ca4fa5bd5f1092e867e87542e349a3.zip
op-kernel-dev-a9cd207c23ca4fa5bd5f1092e867e87542e349a3.tar.gz
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/nilfs2')
-rw-r--r--fs/nilfs2/mdt.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/nilfs2/mdt.c b/fs/nilfs2/mdt.c
index dee34d9..1125f40 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;
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