On Sun, Oct 4, 2015 at 10:33 PM, Ryusuke Konishi
<konishi.ryusuke@xxxxxxxxxxxxx> wrote:
> On Sun, 4 Oct 2015 01:02:42 +0900, Mitake Hitoshi wrote:
>> 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
>>
>> Cc: TK Kato <TK.Kato@xxxxxxx>
>> Signed-off-by: Hitoshi Mitake <mitake.hitoshi@xxxxxxxxxxxxx>
>
> Applied to the tracepoints branch. Thanks.
Thanks, could you send the patches in the tracepoints branch to upstream?
Thanks,
Hitoshi
>
> Ryusuke Konishi
>
>> ---
>> fs/nilfs2/mdt.c | 6 +++++
>> include/trace/events/nilfs2.h | 54 +++++++++++++++++++++++++++++++++++++++++++
>> 2 files changed, 60 insertions(+)
>>
>> 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;
>> diff --git a/include/trace/events/nilfs2.h b/include/trace/events/nilfs2.h
>> index 1b65ba6..c780581 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 */
>> --
>> 1.9.1
>>
>> --
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