kernel/drivers/nvme/host/trace.c, branch linux-5.1.y

nvme: add get-feature to admin cmds tracer

2019-03-13T18:05:39Z

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

2019-02-20T14:22:28Z

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

nvme-pci: trace SQ status on completions

2018-12-19T07:35:36Z

Export the disk name, queue id, sq_head, sq_tail to a trace event in completion handling. Usage example: cd /sys/kernel/debug/tracing/events/nvme/nvme_sq echo 'disk=="nvme1n1"' > filter echo 1 > enable cat /sys/kernel/debug/tracing/trace_pipe Signed-off-by: yupeng Reviewed-by: Sagi Grimberg Reviewed-by: Keith Busch [hch: slight formatting tweaks, use standard nvme tracepoint conventions] Signed-off-by: Christoph Hellwig wip

nvme: add disk name to trace events

2018-07-24T13:55:48Z

This will print the disk name to the nvme event trace for io requests so a user can better distinguish traffic to different disks. This can be used to create disk based filters. For example, to see only nvme0n2 traffic: echo "disk == \"nvme0n2\"" > /sys/kernel/debug/tracing/events/nvme/filter Signed-off-by: Keith Busch Reviewed-by: Sagi Grimberg Reviewed-by: Johannes Thumshirn [hch: turned __assign_disk_name into an inline function] Signed-off-by: Christoph Hellwig

nvme: add tracepoint for nvme_setup_cmd

2018-01-26T11:34:40Z

Add tracepoints for nvme_setup_cmd() for tracing admin and/or nvm commands. Examples of the two tracepoints are as follows for trace_nvme_setup_admin_cmd(): kworker/u8:0-5 [003] .... 2.998792: nvme_setup_admin_cmd: cmdid=14, flags=0x0, meta=0x0, cmd=(nvme_admin_create_cq cqid=1, qsize=1023, cq_flags=0x3, irq_vector=0) and trace_nvme_setup_nvm_cmd(): dd-205 [001] .... 3.503929: nvme_setup_nvm_cmd: qid=1, nsid=1, cmdid=989, flags=0x0, meta=0x0, cmd=(nvme_cmd_read slba=4096, len=2047, ctrl=0x0, dsmgmt=0, reftag=0) Signed-off-by: Johannes Thumshirn Reviewed-by: Hannes Reinecke Reviewed-by: Martin K. Petersen Reviewed-by: Keith Busch Reviewed-by: Sagi Grimberg Signed-off-by: Christoph Hellwig