diff options
| author | Bart Van Assche <bart.vanassche@sandisk.com> | 2017-04-26 22:47:57 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2017-04-26 23:09:04 +0200 |
| commit | 0eebd005dd07c162e6af053be0ab440dd766b1d5 (patch) | |
| tree | 4531dc9dfaffcc4e09614c76f92436f43ef63bf5 /drivers/scsi/scsi_debugfs.c | |
| parent | blk-mq: Add blk_mq_ops.show_rq() (diff) | |
| download | linux-0eebd005dd07c162e6af053be0ab440dd766b1d5.tar.xz linux-0eebd005dd07c162e6af053be0ab440dd766b1d5.zip | |
scsi: Implement blk_mq_ops.show_rq()
Show the SCSI CDB for pending SCSI commands in
/sys/kernel/debug/block/*/mq/*/dispatch and */rq_list. An example
of how SCSI commands are displayed by this code:
ffff8801703245c0 {.op=READ, .cmd_flags=META PRIO, .rq_flags=DONTPREP IO_STAT STATS, .tag=14, .internal_tag=-1, .cmd=Read(10) 28 00 2a 81 1b 30 00 00 08 00}
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Hannes Reinecke <hare@suse.com>
Cc: <linux-scsi@vger.kernel.org>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers/scsi/scsi_debugfs.c')
| -rw-r--r-- | drivers/scsi/scsi_debugfs.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/scsi/scsi_debugfs.c b/drivers/scsi/scsi_debugfs.c new file mode 100644 index 000000000000..a97c9507103d --- /dev/null +++ b/drivers/scsi/scsi_debugfs.c @@ -0,0 +1,13 @@ +#include <linux/seq_file.h> +#include <scsi/scsi_cmnd.h> +#include <scsi/scsi_dbg.h> +#include "scsi_debugfs.h" + +void scsi_show_rq(struct seq_file *m, struct request *rq) +{ + struct scsi_cmnd *cmd = container_of(scsi_req(rq), typeof(*cmd), req); + char buf[80]; + + __scsi_format_command(buf, sizeof(buf), cmd->cmnd, cmd->cmd_len); + seq_printf(m, ", .cmd=%s", buf); +} |