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Message-ID: <4AB4F908.60307@ce.jp.nec.com>
Date: Sun, 20 Sep 2009 00:30:16 +0900
From: "Jun'ichi Nomura" <j-nomura@...jp.nec.com>
To: Jens Axboe <jens.axboe@...cle.com>,
Alasdair G Kergon <agk@...hat.com>,
Li Zefan <lizf@...fujitsu.com>
CC: linux-kernel@...r.kernel.org,
device-mapper development <dm-devel@...hat.com>
Subject: Re: [PATCH 2/3] block: Rename trace_block_remap to trace_block_bio_remap
Sorry, the previous mail has line-wrapped.
Re-sending the patch.
Rename "block_remap" tracepoint to "block_bio_remap" to clarify the event.
No functional change.
Signed-off-by: Kiyoshi Ueda <k-ueda@...jp.nec.com>
Signed-off-by: Jun'ichi Nomura <j-nomura@...jp.nec.com>
Cc: Jens Axboe <jens.axboe@...cle.com>
Cc: Alasdair G Kergon <agk@...hat.com>
Cc: Li Zefan <lizf@...fujitsu.com>
---
block/blk-core.c | 10 +++++-----
drivers/md/dm.c | 4 ++--
include/trace/events/block.h | 2 +-
kernel/trace/blktrace.c | 10 +++++-----
4 files changed, 13 insertions(+), 13 deletions(-)
Index: linux-2.6.31.work/include/trace/events/block.h
===================================================================
--- linux-2.6.31.work.orig/include/trace/events/block.h
+++ linux-2.6.31.work/include/trace/events/block.h
@@ -453,7 +453,7 @@ TRACE_EVENT(block_split,
__entry->comm)
);
-TRACE_EVENT(block_remap,
+TRACE_EVENT(block_bio_remap,
TP_PROTO(struct request_queue *q, struct bio *bio, dev_t dev,
sector_t from),
Index: linux-2.6.31.work/block/blk-core.c
===================================================================
--- linux-2.6.31.work.orig/block/blk-core.c
+++ linux-2.6.31.work/block/blk-core.c
@@ -33,7 +33,7 @@
#include "blk.h"
-EXPORT_TRACEPOINT_SYMBOL_GPL(block_remap);
+EXPORT_TRACEPOINT_SYMBOL_GPL(block_bio_remap);
EXPORT_TRACEPOINT_SYMBOL_GPL(block_rq_remap);
EXPORT_TRACEPOINT_SYMBOL_GPL(block_bio_complete);
@@ -1285,9 +1285,9 @@ static inline void blk_partition_remap(s
bio->bi_sector += p->start_sect;
bio->bi_bdev = bdev->bd_contains;
- trace_block_remap(bdev_get_queue(bio->bi_bdev), bio,
- bdev->bd_dev,
- bio->bi_sector - p->start_sect);
+ trace_block_bio_remap(bdev_get_queue(bio->bi_bdev), bio,
+ bdev->bd_dev,
+ bio->bi_sector - p->start_sect);
}
}
@@ -1455,7 +1455,7 @@ static inline void __generic_make_reques
goto end_io;
if (old_sector != -1)
- trace_block_remap(q, bio, old_dev, old_sector);
+ trace_block_bio_remap(q, bio, old_dev, old_sector);
trace_block_bio_queue(q, bio);
Index: linux-2.6.31.work/kernel/trace/blktrace.c
===================================================================
--- linux-2.6.31.work.orig/kernel/trace/blktrace.c
+++ linux-2.6.31.work/kernel/trace/blktrace.c
@@ -822,7 +822,7 @@ static void blk_add_trace_split(struct r
}
/**
- * blk_add_trace_remap - Add a trace for a remap operation
+ * blk_add_trace_bio_remap - Add a trace for a bio-remap operation
* @q: queue the io is for
* @bio: the source bio
* @dev: target device
@@ -833,8 +833,8 @@ static void blk_add_trace_split(struct r
* it spans a stripe (or similar). Add a trace for that action.
*
**/
-static void blk_add_trace_remap(struct request_queue *q, struct bio *bio,
- dev_t dev, sector_t from)
+static void blk_add_trace_bio_remap(struct request_queue *q, struct bio *bio,
+ dev_t dev, sector_t from)
{
struct blk_trace *bt = q->blk_trace;
struct blk_io_trace_remap r;
@@ -947,7 +947,7 @@ static void blk_register_tracepoints(voi
WARN_ON(ret);
ret = register_trace_block_split(blk_add_trace_split);
WARN_ON(ret);
- ret = register_trace_block_remap(blk_add_trace_remap);
+ ret = register_trace_block_bio_remap(blk_add_trace_bio_remap);
WARN_ON(ret);
ret = register_trace_block_rq_remap(blk_add_trace_rq_remap);
WARN_ON(ret);
@@ -956,7 +956,7 @@ static void blk_register_tracepoints(voi
static void blk_unregister_tracepoints(void)
{
unregister_trace_block_rq_remap(blk_add_trace_rq_remap);
- unregister_trace_block_remap(blk_add_trace_remap);
+ unregister_trace_block_bio_remap(blk_add_trace_bio_remap);
unregister_trace_block_split(blk_add_trace_split);
unregister_trace_block_unplug_io(blk_add_trace_unplug_io);
unregister_trace_block_unplug_timer(blk_add_trace_unplug_timer);
Index: linux-2.6.31.work/drivers/md/dm.c
===================================================================
--- linux-2.6.31.work.orig/drivers/md/dm.c
+++ linux-2.6.31.work/drivers/md/dm.c
@@ -961,8 +961,8 @@ static void __map_bio(struct dm_target *
if (r == DM_MAPIO_REMAPPED) {
/* the bio has been remapped so dispatch it */
- trace_block_remap(bdev_get_queue(clone->bi_bdev), clone,
- tio->io->bio->bi_bdev->bd_dev, sector);
+ trace_block_bio_remap(bdev_get_queue(clone->bi_bdev), clone,
+ tio->io->bio->bi_bdev->bd_dev, sector);
generic_make_request(clone);
} else if (r < 0 || r == DM_MAPIO_REQUEUE) {
--
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