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| author | Christoph Hellwig <hch@lst.de> | 2017-01-27 09:35:54 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2017-01-27 15:08:35 -0700 |
| commit | 48b77ad6084481ef9330a5d2bee289966da0975b (patch) | |
| tree | ec332b20a788843320c1fed26820592793b13fe2 /include/trace/events | |
| parent | 6d247d7f71d1fa4b66a5f4da7b1daa21510d529b (diff) | |
| download | linux-48b77ad6084481ef9330a5d2bee289966da0975b.tar.gz linux-48b77ad6084481ef9330a5d2bee289966da0975b.tar.bz2 linux-48b77ad6084481ef9330a5d2bee289966da0975b.zip | |
block: cleanup tracing
A couple tweaks to the tracing code:
- trace the request size for all requests
- trace request sector and nr_sectors only for fs requests, enforced by
helpers
- drop SCSI CDB tracing - we have SCSI tracing for this and are going
to me the CDB out of the generic struct request soon.
With this the tracing code stops to know about BLOCK_PC requests entirely,
it's just FS vs passthrough requests now, where the latter includes any
driver-private requests.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'include/trace/events')
| -rw-r--r-- | include/trace/events/block.h | 27 |
1 files changed, 11 insertions, 16 deletions
diff --git a/include/trace/events/block.h b/include/trace/events/block.h index 3e02e3a25413..a88ed13446ff 100644 --- a/include/trace/events/block.h +++ b/include/trace/events/block.h @@ -73,19 +73,17 @@ DECLARE_EVENT_CLASS(block_rq_with_error, __field( unsigned int, nr_sector ) __field( int, errors ) __array( char, rwbs, RWBS_LEN ) - __dynamic_array( char, cmd, blk_cmd_buf_len(rq) ) + __dynamic_array( char, cmd, 1 ) ), TP_fast_assign( __entry->dev = rq->rq_disk ? disk_devt(rq->rq_disk) : 0; - __entry->sector = (rq->cmd_type == REQ_TYPE_BLOCK_PC) ? - 0 : blk_rq_pos(rq); - __entry->nr_sector = (rq->cmd_type == REQ_TYPE_BLOCK_PC) ? - 0 : blk_rq_sectors(rq); + __entry->sector = blk_rq_trace_sector(rq); + __entry->nr_sector = blk_rq_trace_nr_sectors(rq); __entry->errors = rq->errors; blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq)); - blk_dump_cmd(__get_str(cmd), rq); + __get_str(cmd)[0] = '\0'; ), TP_printk("%d,%d %s (%s) %llu + %u [%d]", @@ -153,7 +151,7 @@ TRACE_EVENT(block_rq_complete, __field( unsigned int, nr_sector ) __field( int, errors ) __array( char, rwbs, RWBS_LEN ) - __dynamic_array( char, cmd, blk_cmd_buf_len(rq) ) + __dynamic_array( char, cmd, 1 ) ), TP_fast_assign( @@ -163,7 +161,7 @@ TRACE_EVENT(block_rq_complete, __entry->errors = rq->errors; blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, nr_bytes); - blk_dump_cmd(__get_str(cmd), rq); + __get_str(cmd)[0] = '\0'; ), TP_printk("%d,%d %s (%s) %llu + %u [%d]", @@ -186,20 +184,17 @@ DECLARE_EVENT_CLASS(block_rq, __field( unsigned int, bytes ) __array( char, rwbs, RWBS_LEN ) __array( char, comm, TASK_COMM_LEN ) - __dynamic_array( char, cmd, blk_cmd_buf_len(rq) ) + __dynamic_array( char, cmd, 1 ) ), TP_fast_assign( __entry->dev = rq->rq_disk ? disk_devt(rq->rq_disk) : 0; - __entry->sector = (rq->cmd_type == REQ_TYPE_BLOCK_PC) ? - 0 : blk_rq_pos(rq); - __entry->nr_sector = (rq->cmd_type == REQ_TYPE_BLOCK_PC) ? - 0 : blk_rq_sectors(rq); - __entry->bytes = (rq->cmd_type == REQ_TYPE_BLOCK_PC) ? - blk_rq_bytes(rq) : 0; + __entry->sector = blk_rq_trace_sector(rq); + __entry->nr_sector = blk_rq_trace_nr_sectors(rq); + __entry->bytes = blk_rq_bytes(rq); blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq)); - blk_dump_cmd(__get_str(cmd), rq); + __get_str(cmd)[0] = '\0'; memcpy(__entry->comm, current->comm, TASK_COMM_LEN); ), |