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Message-ID: <20101103215047.GC26473@redhat.com>
Date: Wed, 3 Nov 2010 17:50:47 -0400
From: Mike Snitzer <snitzer@...hat.com>
To: "Jun'ichi Nomura" <j-nomura@...jp.nec.com>, jaxboe@...ionio.com
Cc: device-mapper development <dm-devel@...hat.com>,
Alasdair G Kergon <agk@...hat.com>,
Li Zefan <lizf@...fujitsu.com>, linux-kernel@...r.kernel.org
Subject: [PATCH v2] block: rename trace_block_remap to trace_block_bio_remap
Rename "block_remap" tracepoint to "block_bio_remap" to clarify the
event.
Signed-off-by: Kiyoshi Ueda <k-ueda@...jp.nec.com>
Signed-off-by: Jun'ichi Nomura <j-nomura@...jp.nec.com>
Signed-off-by: Mike Snitzer <snitzer@...hat.com>
---
block/blk-core.c | 10 +++++-----
drivers/md/dm.c | 4 ++--
include/trace/events/block.h | 6 +++---
kernel/trace/blktrace.c | 12 ++++++------
4 files changed, 16 insertions(+), 16 deletions(-)
v2: patch needed to be rebased and it should go through the Jens'
linux-2.6-block tree. The original v1 patch is here:
https://patchwork.kernel.org/patch/48763/
diff --git a/block/blk-core.c b/block/blk-core.c
index f0834e2..9d5a61f 100644
--- a/block/blk-core.c
+++ b/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);
@@ -1336,9 +1336,9 @@ static inline void blk_partition_remap(struct bio *bio)
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);
}
}
@@ -1507,7 +1507,7 @@ static inline void __generic_make_request(struct bio *bio)
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);
old_sector = bio->bi_sector;
old_dev = bio->bi_bdev->bd_dev;
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 7cb1352..0a2b551 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -990,8 +990,8 @@ static void __map_bio(struct dm_target *ti, struct bio *clone,
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) {
diff --git a/include/trace/events/block.h b/include/trace/events/block.h
index d8ce278..b56c65d 100644
--- a/include/trace/events/block.h
+++ b/include/trace/events/block.h
@@ -486,16 +486,16 @@ TRACE_EVENT(block_split,
);
/**
- * block_remap - map request for a partition to the raw device
+ * block_bio_remap - map request for a logical device to the raw device
* @q: queue holding the operation
* @bio: revised operation
* @dev: device for the operation
* @from: original sector for the operation
*
- * An operation for a partition on a block device has been mapped to the
+ * An operation for a logical device has been mapped to the
* raw block device.
*/
-TRACE_EVENT(block_remap,
+TRACE_EVENT(block_bio_remap,
TP_PROTO(struct request_queue *q, struct bio *bio, dev_t dev,
sector_t from),
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index bc251ed..9f42529 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -889,7 +889,7 @@ static void blk_add_trace_split(void *ignore,
}
/**
- * blk_add_trace_remap - Add a trace for a remap operation
+ * blk_add_trace_bio_remap - Add a trace for a bio-remap operation
* @ignore: trace callback data parameter (not used)
* @q: queue the io is for
* @bio: the source bio
@@ -901,9 +901,9 @@ static void blk_add_trace_split(void *ignore,
* it spans a stripe (or similar). Add a trace for that action.
*
**/
-static void blk_add_trace_remap(void *ignore,
- struct request_queue *q, struct bio *bio,
- dev_t dev, sector_t from)
+static void blk_add_trace_bio_remap(void *ignore,
+ 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;
@@ -1018,7 +1018,7 @@ static void blk_register_tracepoints(void)
WARN_ON(ret);
ret = register_trace_block_split(blk_add_trace_split, NULL);
WARN_ON(ret);
- ret = register_trace_block_remap(blk_add_trace_remap, NULL);
+ ret = register_trace_block_bio_remap(blk_add_trace_bio_remap, NULL);
WARN_ON(ret);
ret = register_trace_block_rq_remap(blk_add_trace_rq_remap, NULL);
WARN_ON(ret);
@@ -1027,7 +1027,7 @@ static void blk_register_tracepoints(void)
static void blk_unregister_tracepoints(void)
{
unregister_trace_block_rq_remap(blk_add_trace_rq_remap, NULL);
- unregister_trace_block_remap(blk_add_trace_remap, NULL);
+ unregister_trace_block_bio_remap(blk_add_trace_bio_remap, NULL);
unregister_trace_block_split(blk_add_trace_split, NULL);
unregister_trace_block_unplug_io(blk_add_trace_unplug_io, NULL);
unregister_trace_block_unplug_timer(blk_add_trace_unplug_timer, NULL);
--
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