* @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,
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;
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;
}
/**
- * 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
* 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;
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);
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);