kernel/linux.git/drivers/nvme/host/trace.c, branch v5.15.208

nvme: add set feature tracing support

2021-08-16T12:42:23+00:00

A nvme connect command produces following trace. Before: /sys/kernel/debug/tracing# cat trace | grep feature kworker/5:1H-98 [005] .... 3221.294844: nvme_setup_cmd: nvme0: qid=0, cmdid=25, nsid=0, flags=0x0, meta=0x0, cmd=(nvme_admin_set_features cdw10=07 00 00 00 07 00 07 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00) kworker/4:1H-124 [004] .... 3222.009186: nvme_setup_cmd: nvme0: qid=0, cmdid=17, nsid=0, flags=0x0, meta=0x0, cmd=(nvme_admin_set_features cdw10=0b 00 00 00 00 09 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00) After: /sys/kernel/debug/tracing# cat trace | grep feature kworker/0:1H-253 [000] .... 196.060509: nvme_setup_cmd: nvme0: qid=0, cmdid=29, nsid=0, flags=0x0, meta=0x0, cmd=(nvme_admin_set_features fid=0x7, sv=0x0, cdw11=0x70007) kworker/0:1H-253 [000] .... 196.763947: nvme_setup_cmd: nvme0: qid=0, cmdid=29, nsid=0, flags=0x0, meta=0x0, cmd=(nvme_admin_set_features fid=0xb, sv=0x0, cdw11=0x900) Using ',' to separate different field like others in nvmet_trace_admin_get_features. Signed-off-by: Hou Pu Signed-off-by: Christoph Hellwig

nvme: add tracing of zns commands

2021-02-02T09:26:12+00:00

When support for the NVMe ZNS commands was merged, tracing of these has been omitted. Add nvme_cmd_zone_mgmt_send, nvme_cmd_zone_mgmt_recv as well as nvme_cmd_zone_append to the nvme driver's tracing facility. Signed-off-by: Johannes Thumshirn Signed-off-by: Christoph Hellwig

nvme: parse format nvm command details when tracing

2021-02-02T09:26:12+00:00

Add detailed parsing of format nvm admin command to make the trace log more consistent and human-readable. Signed-off-by: Michal Krakowiak Acked-by: Dan Williams Reviewed-by: Minwoo Im Signed-off-by: Christoph Hellwig

nvme: trace: parse Get LBA Status command in detail

2019-08-29T19:55:01+00:00

Four different fields are in CDWs of Get LBA Status command which means it would be great if we can see in detail when tracing. Signed-off-by: Minwoo Im Signed-off-by: Sagi Grimberg

nvme-trace: add delete completion and submission queue to admin cmds tracer

2019-07-09T21:15:37+00:00

The trace log for 'delete I/O submission queue' and 'delete I/O completion queue' command will look like as below: kworker/u49:1-3438 [003] .... 6693.070865: nvme_setup_cmd: nvme0: qid=0, cmdid=11, nsid=0, flags=0x0, meta=0x0, cmd=(nvme_admin_delete_sq sqid=1) kworker/u49:1-3438 [003] .... 6693.071171: nvme_setup_cmd: nvme0: qid=0, cmdid=8, nsid=0, flags=0x0, meta=0x0, cmd=(nvme_admin_delete_cq cqid=24) Signed-off-by: Tom Wu Reviewed-by: Max Gurtovoy Reviewed-by: Minwoo Im Reviewed-by: Israel Rukshin Signed-off-by: Christoph Hellwig

nvme-trace: fix spelling mistake "spcecific" -> "specific"

2019-07-09T20:44:45+00:00

There are two spelling mistakes in trace_seq_printf messages, fix these. Signed-off-by: Colin Ian King Reviewed-by: Minwoo Im Signed-off-by: Christoph Hellwig

nvme-trace: support for fabrics commands in host-side

2019-06-21T09:12:22+00:00

This patch introduces fabrics commands tracing feature from host-side. This patch does not include any changes for the previous host-side tracing, but just add fabrics commands parsing in cmd=() format. Signed-off-by: Minwoo Im [hch: fixed some whitespace damage] Signed-off-by: Christoph Hellwig

nvme-trace: do not export nvme_trace_disk_name

2019-06-21T09:11:56+00:00

nvme_trace_disk_name() is now already being invoked with the function prototype in trace.h. We don't need to export this symbol at all. The following patches are going to provide target-side trace feature with the exactly same function with this so that this patch removes the EXPORT_SYMBOL() for this function. Signed-off-by: Minwoo Im Reviewed-by: Chaitanya Kulkarni Signed-off-by: Christoph Hellwig

nvme: add get-feature to admin cmds tracer

2019-03-13T18:05:39+00:00

This will print get-feature cmd in more informative way. For example, run "nvme get-feature /dev/nvme0 -n 1 -f 0x9 -c 10" will trace: nvme-3907 [008] .... 1763.635054: nvme_setup_cmd: nvme0: qid=0, cmdid=6, nsid=1, flags=0x0, meta=0x0, cmd=(nvme_admin_get_features fid=0x9 sel=0x0 cdw11=0xa) -0 [001] d.h. 1763.635112: nvme_sq: nvme0: qid=0, head=27, tail=27 -0 [008] ..s. 1763.635121: nvme_complete_rq: nvme0: qid=0, cmdid=6, res=10, retries=0, flags=0x2, status=0 Signed-off-by: Max Gurtovoy Reviewed-by: Sagi Grimberg Reviewed-by: Johannes Thumshirn Signed-off-by: Christoph Hellwig Signed-off-by: Jens Axboe

nvme: convert to SPDX identifiers

2019-02-20T14:22:28+00:00

Update license to use SPDX-License-Identifier instead of verbose license text. Signed-off-by: Christoph Hellwig Reviewed-by: Sagi Grimberg