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Merge branch 'for-2.6.38/core' of git://git.kernel.dk/linux-2.6-block

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* 'for-2.6.38/core' of git://git.kernel.dk/linux-2.6-block: (43 commits)
  block: ensure that completion error gets properly traced
  blktrace: add missing probe argument to block_bio_complete
  block cfq: don't use atomic_t for cfq_group
  block cfq: don't use atomic_t for cfq_queue
  block: trace event block fix unassigned field
  block: add internal hd part table references
  block: fix accounting bug on cross partition merges
  kref: add kref_test_and_get
  bio-integrity: mark kintegrityd_wq highpri and CPU intensive
  block: make kblockd_workqueue smarter
  Revert "sd: implement sd_check_events()"
  block: Clean up exit_io_context() source code.
  Fix compile warnings due to missing removal of a 'ret' variable
  fs/block: type signature of major_to_index(int) to major_to_index(unsigned)
  block: convert !IS_ERR(p) && p to !IS_ERR_NOR_NULL(p)
  cfq-iosched: don't check cfqg in choose_service_tree()
  fs/splice: Pull buf->ops->confirm() from splice_from_pipe actors
  cdrom: export cdrom_check_events()
  sd: implement sd_check_events()
  sr: implement sr_check_events()
  ...
This commit is contained in:
Linus Torvalds
2011-01-13 10:45:01 -08:00
parent fe3c560b8a 81c5e2ae33
commit 275220f0fc
53 changed files with 1329 additions and 1091 deletions
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37
kernel/trace/blktrace.c
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@@ -758,53 +758,58 @@ static void blk_add_trace_rq_complete(void *ignore,
* @q: queue the io is for
* @bio: the source bio
* @what: the action
* @error: error, if any
*
* Description:
* Records an action against a bio. Will log the bio offset + size.
*
**/
static void blk_add_trace_bio(struct request_queue *q, struct bio *bio,
u32 what)
u32 what, int error)
{
struct blk_trace *bt = q->blk_trace;
if (likely(!bt))
return;
if (!error && !bio_flagged(bio, BIO_UPTODATE))
error = EIO;
__blk_add_trace(bt, bio->bi_sector, bio->bi_size, bio->bi_rw, what,
!bio_flagged(bio, BIO_UPTODATE), 0, NULL);
error, 0, NULL);
}
static void blk_add_trace_bio_bounce(void *ignore,
struct request_queue *q, struct bio *bio)
{
blk_add_trace_bio(q, bio, BLK_TA_BOUNCE);
blk_add_trace_bio(q, bio, BLK_TA_BOUNCE, 0);
}
static void blk_add_trace_bio_complete(void *ignore,
struct request_queue *q, struct bio *bio)
struct request_queue *q, struct bio *bio,
int error)
{
blk_add_trace_bio(q, bio, BLK_TA_COMPLETE);
blk_add_trace_bio(q, bio, BLK_TA_COMPLETE, error);
}
static void blk_add_trace_bio_backmerge(void *ignore,
struct request_queue *q,
struct bio *bio)
{
blk_add_trace_bio(q, bio, BLK_TA_BACKMERGE);
blk_add_trace_bio(q, bio, BLK_TA_BACKMERGE, 0);
}
static void blk_add_trace_bio_frontmerge(void *ignore,
struct request_queue *q,
struct bio *bio)
{
blk_add_trace_bio(q, bio, BLK_TA_FRONTMERGE);
blk_add_trace_bio(q, bio, BLK_TA_FRONTMERGE, 0);
}
static void blk_add_trace_bio_queue(void *ignore,
struct request_queue *q, struct bio *bio)
{
blk_add_trace_bio(q, bio, BLK_TA_QUEUE);
blk_add_trace_bio(q, bio, BLK_TA_QUEUE, 0);
}
static void blk_add_trace_getrq(void *ignore,
@@ -812,7 +817,7 @@ static void blk_add_trace_getrq(void *ignore,
struct bio *bio, int rw)
{
if (bio)
blk_add_trace_bio(q, bio, BLK_TA_GETRQ);
blk_add_trace_bio(q, bio, BLK_TA_GETRQ, 0);
else {
struct blk_trace *bt = q->blk_trace;
@@ -827,7 +832,7 @@ static void blk_add_trace_sleeprq(void *ignore,
struct bio *bio, int rw)
{
if (bio)
blk_add_trace_bio(q, bio, BLK_TA_SLEEPRQ);
blk_add_trace_bio(q, bio, BLK_TA_SLEEPRQ, 0);
else {
struct blk_trace *bt = q->blk_trace;
@@ -887,7 +892,7 @@ 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
@@ -899,9 +904,9 @@ 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;
@@ -1016,7 +1021,7 @@ 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);
@@ -1025,7 +1030,7 @@ 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);