summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
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
parent83eec5e6dd10f0b1ab83ee660c8be883b3da7ba8 (diff)
downloadlinux-a9cd207c23ca4fa5bd5f1092e867e87542e349a3.tar.bz2
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>
-rw-r--r--fs/nilfs2/mdt.c6
-rw-r--r--include/trace/events/nilfs2.h54
2 files changed, 60 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;
diff --git a/include/trace/events/nilfs2.h b/include/trace/events/nilfs2.h
index 1b65ba687925..c7805818fcc6 100644
--- a/include/trace/events/nilfs2.h
+++ b/include/trace/events/nilfs2.h
@@ -162,6 +162,60 @@ TRACE_EVENT(nilfs2_segment_usage_freed,
__entry->segnum)
);
+TRACE_EVENT(nilfs2_mdt_insert_new_block,
+ TP_PROTO(struct inode *inode,
+ unsigned long ino,
+ unsigned long block),
+
+ TP_ARGS(inode, ino, block),
+
+ TP_STRUCT__entry(
+ __field(struct inode *, inode)
+ __field(unsigned long, ino)
+ __field(unsigned long, block)
+ ),
+
+ TP_fast_assign(
+ __entry->inode = inode;
+ __entry->ino = ino;
+ __entry->block = block;
+ ),
+
+ TP_printk("inode = %p ino = %lu block = %lu",
+ __entry->inode,
+ __entry->ino,
+ __entry->block)
+);
+
+TRACE_EVENT(nilfs2_mdt_submit_block,
+ TP_PROTO(struct inode *inode,
+ unsigned long ino,
+ unsigned long blkoff,
+ int mode),
+
+ TP_ARGS(inode, ino, blkoff, mode),
+
+ TP_STRUCT__entry(
+ __field(struct inode *, inode)
+ __field(unsigned long, ino)
+ __field(unsigned long, blkoff)
+ __field(int, mode)
+ ),
+
+ TP_fast_assign(
+ __entry->inode = inode;
+ __entry->ino = ino;
+ __entry->blkoff = blkoff;
+ __entry->mode = mode;
+ ),
+
+ TP_printk("inode = %p ino = %lu blkoff = %lu mode = %x",
+ __entry->inode,
+ __entry->ino,
+ __entry->blkoff,
+ __entry->mode)
+);
+
#endif /* _TRACE_NILFS2_H */
/* This part must be outside protection */