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authorBart Van Assche <bart.vanassche@wdc.com>2017-08-30 16:58:41 -0700
committerMartin K. Petersen <martin.petersen@oracle.com>2017-08-31 23:09:11 -0400
commitcad8cf20a65f3d6cd70719bd0fec2d54546b12ef (patch)
tree8f327d9d1636fa5f49b2b6f25cfd4905d90ceab4 /drivers/scsi/scsi_debugfs.c
parent832889f5ed45ec90c76f6eb97e64baf845929007 (diff)
scsi: Show .retries and .jiffies_at_alloc in debugfs
Make these two member variables available in debugfs such that their value can be verified by kernel developers. An example of the new output: ffff8804a513d480 {.op=READ, .cmd_flags=META|PRIO, .rq_flags=MQ_INFLIGHT|DONTPREP|IO_STAT|STATS, .atomic_flags=STARTED, .tag=17, .internal_tag=-1, .cmd=Read(10) 28 00 08 81 32 38 00 00 08 00, .retries=0, allocated 0.010 s ago} Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com> Cc: Hannes Reinecke <hare@suse.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/scsi_debugfs.c')
-rw-r--r--drivers/scsi/scsi_debugfs.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/scsi/scsi_debugfs.c b/drivers/scsi/scsi_debugfs.c
index a97c9507103d..5e9755008aed 100644
--- a/drivers/scsi/scsi_debugfs.c
+++ b/drivers/scsi/scsi_debugfs.c
@@ -6,8 +6,10 @@
void scsi_show_rq(struct seq_file *m, struct request *rq)
{
struct scsi_cmnd *cmd = container_of(scsi_req(rq), typeof(*cmd), req);
+ int msecs = jiffies_to_msecs(jiffies - cmd->jiffies_at_alloc);
char buf[80];
__scsi_format_command(buf, sizeof(buf), cmd->cmnd, cmd->cmd_len);
- seq_printf(m, ", .cmd=%s", buf);
+ seq_printf(m, ", .cmd=%s, .retries=%d, allocated %d.%03d s ago", buf,
+ cmd->retries, msecs / 1000, msecs % 1000);
}