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20:1oEn2P+BxgGpWs3x9lcHriguhOEgpACpOIx2tY+52aaG/TFo0EcoXi1WKr5vORkf7Cnh80LHJFSm/WJPeh2Wx4Y5wJ8J5bstU/Q+C9IgxgbKuI2WTJiTs+9C3FfjXafBsj16qQxnEyicZaR0DBFCQ/VZmg/ru0moHjZ8hgzviXk= X-OriginatorOrg: sandisk.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 26 Apr 2017 20:48:07.8943 (UTC) X-MS-Exchange-CrossTenant-Id: b61c8803-16f3-4c35-9b17-6f65f441df86 X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=b61c8803-16f3-4c35-9b17-6f65f441df86; Ip=[63.163.107.225]; Helo=[milsmgep14.sandisk.com] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM2PR04MB893 Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP 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 Reviewed-by: Omar Sandoval Cc: Martin K. Petersen Cc: James Bottomley Cc: Hannes Reinecke Cc: Reviewed-by: Hannes Reinecke --- drivers/scsi/Makefile | 1 + drivers/scsi/scsi_debugfs.c | 13 +++++++++++++ drivers/scsi/scsi_debugfs.h | 4 ++++ drivers/scsi/scsi_lib.c | 4 ++++ 4 files changed, 22 insertions(+) create mode 100644 drivers/scsi/scsi_debugfs.c create mode 100644 drivers/scsi/scsi_debugfs.h diff --git a/drivers/scsi/Makefile b/drivers/scsi/Makefile index fc2855565a51..93dbe58c47c8 100644 --- a/drivers/scsi/Makefile +++ b/drivers/scsi/Makefile @@ -166,6 +166,7 @@ scsi_mod-y += scsi_scan.o scsi_sysfs.o scsi_devinfo.o scsi_mod-$(CONFIG_SCSI_NETLINK) += scsi_netlink.o scsi_mod-$(CONFIG_SYSCTL) += scsi_sysctl.o scsi_mod-$(CONFIG_SCSI_PROC_FS) += scsi_proc.o +scsi_mod-$(CONFIG_BLK_DEBUG_FS) += scsi_debugfs.o scsi_mod-y += scsi_trace.o scsi_logging.o scsi_mod-$(CONFIG_PM) += scsi_pm.o scsi_mod-$(CONFIG_SCSI_DH) += scsi_dh.o 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 +#include +#include +#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); +} diff --git a/drivers/scsi/scsi_debugfs.h b/drivers/scsi/scsi_debugfs.h new file mode 100644 index 000000000000..951b043e82d0 --- /dev/null +++ b/drivers/scsi/scsi_debugfs.h @@ -0,0 +1,4 @@ +struct request; +struct seq_file; + +void scsi_show_rq(struct seq_file *m, struct request *rq); diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index abc391e00f7d..1c3e87d6c48f 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -34,6 +34,7 @@ #include +#include "scsi_debugfs.h" #include "scsi_priv.h" #include "scsi_logging.h" @@ -2157,6 +2158,9 @@ static const struct blk_mq_ops scsi_mq_ops = { .queue_rq = scsi_queue_rq, .complete = scsi_softirq_done, .timeout = scsi_timeout, +#ifdef CONFIG_BLK_DEBUG_FS + .show_rq = scsi_show_rq, +#endif .init_request = scsi_init_request, .exit_request = scsi_exit_request, .map_queues = scsi_map_queues,