diff options
author | Mike Christie <mchristi@redhat.com> | 2016-06-05 21:32:18 +0200 |
---|---|---|
committer | Jens Axboe <axboe@fb.com> | 2016-06-07 21:41:38 +0200 |
commit | 1b9a9ab78b0ab79dc1f0ddd5fbed7833ec7de3a4 (patch) | |
tree | ada8868edd0e9c1761507b38db94b0b7cb0347fe | |
parent | drivers: use req op accessor (diff) | |
download | linux-1b9a9ab78b0ab79dc1f0ddd5fbed7833ec7de3a4.tar.xz linux-1b9a9ab78b0ab79dc1f0ddd5fbed7833ec7de3a4.zip |
blktrace: use op accessors
Have blktrace use the req/bio op accessor to get the REQ_OP.
Signed-off-by: Mike Christie <mchristi@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
-rw-r--r-- | include/linux/blktrace_api.h | 2 | ||||
-rw-r--r-- | include/trace/events/bcache.h | 12 | ||||
-rw-r--r-- | include/trace/events/block.h | 31 | ||||
-rw-r--r-- | kernel/trace/blktrace.c | 62 |
4 files changed, 65 insertions, 42 deletions
diff --git a/include/linux/blktrace_api.h b/include/linux/blktrace_api.h index 0f3172b8b225..cceb72f9e29f 100644 --- a/include/linux/blktrace_api.h +++ b/include/linux/blktrace_api.h @@ -118,7 +118,7 @@ static inline int blk_cmd_buf_len(struct request *rq) } extern void blk_dump_cmd(char *buf, struct request *rq); -extern void blk_fill_rwbs(char *rwbs, u32 rw, int bytes); +extern void blk_fill_rwbs(char *rwbs, int op, u32 rw, int bytes); #endif /* CONFIG_EVENT_TRACING && CONFIG_BLOCK */ diff --git a/include/trace/events/bcache.h b/include/trace/events/bcache.h index 981acf74b14f..65673d8b81ac 100644 --- a/include/trace/events/bcache.h +++ b/include/trace/events/bcache.h @@ -27,7 +27,8 @@ DECLARE_EVENT_CLASS(bcache_request, __entry->sector = bio->bi_iter.bi_sector; __entry->orig_sector = bio->bi_iter.bi_sector - 16; __entry->nr_sector = bio->bi_iter.bi_size >> 9; - blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size); + blk_fill_rwbs(__entry->rwbs, bio_op(bio), bio->bi_rw, + bio->bi_iter.bi_size); ), TP_printk("%d,%d %s %llu + %u (from %d,%d @ %llu)", @@ -101,7 +102,8 @@ DECLARE_EVENT_CLASS(bcache_bio, __entry->dev = bio->bi_bdev->bd_dev; __entry->sector = bio->bi_iter.bi_sector; __entry->nr_sector = bio->bi_iter.bi_size >> 9; - blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size); + blk_fill_rwbs(__entry->rwbs, bio_op(bio), bio->bi_rw, + bio->bi_iter.bi_size); ), TP_printk("%d,%d %s %llu + %u", @@ -136,7 +138,8 @@ TRACE_EVENT(bcache_read, __entry->dev = bio->bi_bdev->bd_dev; __entry->sector = bio->bi_iter.bi_sector; __entry->nr_sector = bio->bi_iter.bi_size >> 9; - blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size); + blk_fill_rwbs(__entry->rwbs, bio_op(bio), bio->bi_rw, + bio->bi_iter.bi_size); __entry->cache_hit = hit; __entry->bypass = bypass; ), @@ -167,7 +170,8 @@ TRACE_EVENT(bcache_write, __entry->inode = inode; __entry->sector = bio->bi_iter.bi_sector; __entry->nr_sector = bio->bi_iter.bi_size >> 9; - blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size); + blk_fill_rwbs(__entry->rwbs, bio_op(bio), bio->bi_rw, + bio->bi_iter.bi_size); __entry->writeback = writeback; __entry->bypass = bypass; ), diff --git a/include/trace/events/block.h b/include/trace/events/block.h index e8a5eca1dbe5..5a2a7592068f 100644 --- a/include/trace/events/block.h +++ b/include/trace/events/block.h @@ -84,7 +84,8 @@ DECLARE_EVENT_CLASS(block_rq_with_error, 0 : blk_rq_sectors(rq); __entry->errors = rq->errors; - blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq)); + blk_fill_rwbs(__entry->rwbs, req_op(rq), rq->cmd_flags, + blk_rq_bytes(rq)); blk_dump_cmd(__get_str(cmd), rq); ), @@ -162,7 +163,7 @@ TRACE_EVENT(block_rq_complete, __entry->nr_sector = nr_bytes >> 9; __entry->errors = rq->errors; - blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, nr_bytes); + blk_fill_rwbs(__entry->rwbs, req_op(rq), rq->cmd_flags, nr_bytes); blk_dump_cmd(__get_str(cmd), rq); ), @@ -198,7 +199,8 @@ DECLARE_EVENT_CLASS(block_rq, __entry->bytes = (rq->cmd_type == REQ_TYPE_BLOCK_PC) ? blk_rq_bytes(rq) : 0; - blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq)); + blk_fill_rwbs(__entry->rwbs, req_op(rq), rq->cmd_flags, + blk_rq_bytes(rq)); blk_dump_cmd(__get_str(cmd), rq); memcpy(__entry->comm, current->comm, TASK_COMM_LEN); ), @@ -272,7 +274,8 @@ TRACE_EVENT(block_bio_bounce, bio->bi_bdev->bd_dev : 0; __entry->sector = bio->bi_iter.bi_sector; __entry->nr_sector = bio_sectors(bio); - blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size); + blk_fill_rwbs(__entry->rwbs, bio_op(bio), bio->bi_rw, + bio->bi_iter.bi_size); memcpy(__entry->comm, current->comm, TASK_COMM_LEN); ), @@ -310,7 +313,8 @@ TRACE_EVENT(block_bio_complete, __entry->sector = bio->bi_iter.bi_sector; __entry->nr_sector = bio_sectors(bio); __entry->error = error; - blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size); + blk_fill_rwbs(__entry->rwbs, bio_op(bio), bio->bi_rw, + bio->bi_iter.bi_size); ), TP_printk("%d,%d %s %llu + %u [%d]", @@ -337,7 +341,8 @@ DECLARE_EVENT_CLASS(block_bio_merge, __entry->dev = bio->bi_bdev->bd_dev; __entry->sector = bio->bi_iter.bi_sector; __entry->nr_sector = bio_sectors(bio); - blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size); + blk_fill_rwbs(__entry->rwbs, bio_op(bio), bio->bi_rw, + bio->bi_iter.bi_size); memcpy(__entry->comm, current->comm, TASK_COMM_LEN); ), @@ -404,7 +409,8 @@ TRACE_EVENT(block_bio_queue, __entry->dev = bio->bi_bdev->bd_dev; __entry->sector = bio->bi_iter.bi_sector; __entry->nr_sector = bio_sectors(bio); - blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size); + blk_fill_rwbs(__entry->rwbs, bio_op(bio), bio->bi_rw, + bio->bi_iter.bi_size); memcpy(__entry->comm, current->comm, TASK_COMM_LEN); ), @@ -432,7 +438,7 @@ DECLARE_EVENT_CLASS(block_get_rq, __entry->dev = bio ? bio->bi_bdev->bd_dev : 0; __entry->sector = bio ? bio->bi_iter.bi_sector : 0; __entry->nr_sector = bio ? bio_sectors(bio) : 0; - blk_fill_rwbs(__entry->rwbs, + blk_fill_rwbs(__entry->rwbs, bio ? bio_op(bio) : 0, bio ? bio->bi_rw : 0, __entry->nr_sector); memcpy(__entry->comm, current->comm, TASK_COMM_LEN); ), @@ -567,7 +573,8 @@ TRACE_EVENT(block_split, __entry->dev = bio->bi_bdev->bd_dev; __entry->sector = bio->bi_iter.bi_sector; __entry->new_sector = new_sector; - blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size); + blk_fill_rwbs(__entry->rwbs, bio_op(bio), bio->bi_rw, + bio->bi_iter.bi_size); memcpy(__entry->comm, current->comm, TASK_COMM_LEN); ), @@ -610,7 +617,8 @@ TRACE_EVENT(block_bio_remap, __entry->nr_sector = bio_sectors(bio); __entry->old_dev = dev; __entry->old_sector = from; - blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size); + blk_fill_rwbs(__entry->rwbs, bio_op(bio), bio->bi_rw, + bio->bi_iter.bi_size); ), TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu", @@ -656,7 +664,8 @@ TRACE_EVENT(block_rq_remap, __entry->old_dev = dev; __entry->old_sector = from; __entry->nr_bios = blk_rq_count_bios(rq); - blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq)); + blk_fill_rwbs(__entry->rwbs, req_op(rq), rq->cmd_flags, + blk_rq_bytes(rq)); ), TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu %u", diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c index 9aef8654e90d..2d16fad519b2 100644 --- a/kernel/trace/blktrace.c +++ b/kernel/trace/blktrace.c @@ -199,7 +199,8 @@ static const u32 ddir_act[2] = { BLK_TC_ACT(BLK_TC_READ), * blk_io_trace structure and places it in a per-cpu subbuffer. */ static void __blk_add_trace(struct blk_trace *bt, sector_t sector, int bytes, - int rw, u32 what, int error, int pdu_len, void *pdu_data) + int op, int op_flags, u32 what, int error, int pdu_len, + void *pdu_data) { struct task_struct *tsk = current; struct ring_buffer_event *event = NULL; @@ -214,13 +215,14 @@ static void __blk_add_trace(struct blk_trace *bt, sector_t sector, int bytes, if (unlikely(bt->trace_state != Blktrace_running && !blk_tracer)) return; - what |= ddir_act[rw & WRITE]; - what |= MASK_TC_BIT(rw, SYNC); - what |= MASK_TC_BIT(rw, RAHEAD); - what |= MASK_TC_BIT(rw, META); - what |= MASK_TC_BIT(rw, DISCARD); - what |= MASK_TC_BIT(rw, FLUSH); - what |= MASK_TC_BIT(rw, FUA); + what |= ddir_act[op_is_write(op) ? WRITE : READ]; + what |= MASK_TC_BIT(op_flags, SYNC); + what |= MASK_TC_BIT(op_flags, RAHEAD); + what |= MASK_TC_BIT(op_flags, META); + what |= MASK_TC_BIT(op_flags, FLUSH); + what |= MASK_TC_BIT(op_flags, FUA); + if (op == REQ_OP_DISCARD) + what |= BLK_TC_ACT(BLK_TC_DISCARD); pid = tsk->pid; if (act_log_check(bt, what, sector, pid)) @@ -708,11 +710,11 @@ static void blk_add_trace_rq(struct request_queue *q, struct request *rq, if (rq->cmd_type == REQ_TYPE_BLOCK_PC) { what |= BLK_TC_ACT(BLK_TC_PC); - __blk_add_trace(bt, 0, nr_bytes, rq->cmd_flags, + __blk_add_trace(bt, 0, nr_bytes, req_op(rq), rq->cmd_flags, what, rq->errors, rq->cmd_len, rq->cmd); } else { what |= BLK_TC_ACT(BLK_TC_FS); - __blk_add_trace(bt, blk_rq_pos(rq), nr_bytes, + __blk_add_trace(bt, blk_rq_pos(rq), nr_bytes, req_op(rq), rq->cmd_flags, what, rq->errors, 0, NULL); } } @@ -770,7 +772,7 @@ static void blk_add_trace_bio(struct request_queue *q, struct bio *bio, return; __blk_add_trace(bt, bio->bi_iter.bi_sector, bio->bi_iter.bi_size, - bio->bi_rw, what, error, 0, NULL); + bio_op(bio), bio->bi_rw, what, error, 0, NULL); } static void blk_add_trace_bio_bounce(void *ignore, @@ -818,7 +820,8 @@ static void blk_add_trace_getrq(void *ignore, struct blk_trace *bt = q->blk_trace; if (bt) - __blk_add_trace(bt, 0, 0, rw, BLK_TA_GETRQ, 0, 0, NULL); + __blk_add_trace(bt, 0, 0, rw, 0, BLK_TA_GETRQ, 0, 0, + NULL); } } @@ -833,7 +836,7 @@ static void blk_add_trace_sleeprq(void *ignore, struct blk_trace *bt = q->blk_trace; if (bt) - __blk_add_trace(bt, 0, 0, rw, BLK_TA_SLEEPRQ, + __blk_add_trace(bt, 0, 0, rw, 0, BLK_TA_SLEEPRQ, 0, 0, NULL); } } @@ -843,7 +846,7 @@ static void blk_add_trace_plug(void *ignore, struct request_queue *q) struct blk_trace *bt = q->blk_trace; if (bt) - __blk_add_trace(bt, 0, 0, 0, BLK_TA_PLUG, 0, 0, NULL); + __blk_add_trace(bt, 0, 0, 0, 0, BLK_TA_PLUG, 0, 0, NULL); } static void blk_add_trace_unplug(void *ignore, struct request_queue *q, @@ -860,7 +863,7 @@ static void blk_add_trace_unplug(void *ignore, struct request_queue *q, else what = BLK_TA_UNPLUG_TIMER; - __blk_add_trace(bt, 0, 0, 0, what, 0, sizeof(rpdu), &rpdu); + __blk_add_trace(bt, 0, 0, 0, 0, what, 0, sizeof(rpdu), &rpdu); } } @@ -874,8 +877,9 @@ static void blk_add_trace_split(void *ignore, __be64 rpdu = cpu_to_be64(pdu); __blk_add_trace(bt, bio->bi_iter.bi_sector, - bio->bi_iter.bi_size, bio->bi_rw, BLK_TA_SPLIT, - bio->bi_error, sizeof(rpdu), &rpdu); + bio->bi_iter.bi_size, bio_op(bio), bio->bi_rw, + BLK_TA_SPLIT, bio->bi_error, sizeof(rpdu), + &rpdu); } } @@ -907,7 +911,7 @@ static void blk_add_trace_bio_remap(void *ignore, r.sector_from = cpu_to_be64(from); __blk_add_trace(bt, bio->bi_iter.bi_sector, bio->bi_iter.bi_size, - bio->bi_rw, BLK_TA_REMAP, bio->bi_error, + bio_op(bio), bio->bi_rw, BLK_TA_REMAP, bio->bi_error, sizeof(r), &r); } @@ -940,7 +944,7 @@ static void blk_add_trace_rq_remap(void *ignore, r.sector_from = cpu_to_be64(from); __blk_add_trace(bt, blk_rq_pos(rq), blk_rq_bytes(rq), - rq_data_dir(rq), BLK_TA_REMAP, !!rq->errors, + rq_data_dir(rq), 0, BLK_TA_REMAP, !!rq->errors, sizeof(r), &r); } @@ -965,10 +969,10 @@ void blk_add_driver_data(struct request_queue *q, return; if (rq->cmd_type == REQ_TYPE_BLOCK_PC) - __blk_add_trace(bt, 0, blk_rq_bytes(rq), 0, + __blk_add_trace(bt, 0, blk_rq_bytes(rq), 0, 0, BLK_TA_DRV_DATA, rq->errors, len, data); else - __blk_add_trace(bt, blk_rq_pos(rq), blk_rq_bytes(rq), 0, + __blk_add_trace(bt, blk_rq_pos(rq), blk_rq_bytes(rq), 0, 0, BLK_TA_DRV_DATA, rq->errors, len, data); } EXPORT_SYMBOL_GPL(blk_add_driver_data); @@ -1769,21 +1773,27 @@ void blk_dump_cmd(char *buf, struct request *rq) } } -void blk_fill_rwbs(char *rwbs, u32 rw, int bytes) +void blk_fill_rwbs(char *rwbs, int op, u32 rw, int bytes) { int i = 0; if (rw & REQ_FLUSH) rwbs[i++] = 'F'; - if (rw & WRITE) + switch (op) { + case REQ_OP_WRITE: + case REQ_OP_WRITE_SAME: rwbs[i++] = 'W'; - else if (rw & REQ_DISCARD) + break; + case REQ_OP_DISCARD: rwbs[i++] = 'D'; - else if (bytes) + break; + case REQ_OP_READ: rwbs[i++] = 'R'; - else + break; + default: rwbs[i++] = 'N'; + } if (rw & REQ_FUA) rwbs[i++] = 'F'; |