linux_dsm_epyc7002/drivers/nvme/target
Minwoo Im a5448fdc46 nvmet: introduce target-side trace
This patch introduces target-side request tracing.  As Christoph
suggested, the trace would not be in a core or module to avoid
disadvantages like cache miss:
  http://lists.infradead.org/pipermail/linux-nvme/2019-June/024721.html

The target-side trace code is entirely based on the Johannes's trace code
from the host side.  It has lots of codes duplicated, but it would be
better than having advantages mentioned above.

It also traces not only fabrics commands, but also nvme normal commands.
Once the codes to be shared gets bigger, then we can make it common as
suggsted.

This also removed the create_sq and create_cq trace parsing functions
because it will be done by the connect fabrics command.

Example:
  echo 1 > /sys/kernel/debug/tracing/event/nvmet/nvmet_req_init/enable
  echo 1 > /sys/kernel/debug/tracing/event/nvmet/nvmet_req_complete/enable
  cat /sys/kernel/debug/tracing/trace

Signed-off-by: Minwoo Im <minwoo.im.dev@gmail.com>
[hch: fixed the symbol namespace and a an endianess conversion]
Signed-off-by: Christoph Hellwig <hch@lst.de>
2019-06-21 11:15:46 +02:00
..
admin-cmd.c nvmet: fix discover log page when offsets are used 2019-04-11 17:28:30 +02:00
configfs.c nvmet: return a specified error it subsys_alloc fails 2019-04-25 16:41:26 +02:00
core.c nvmet: introduce target-side trace 2019-06-21 11:15:46 +02:00
discovery.c nvmet: add transport discovery change op 2019-06-21 11:08:37 +02:00
fabrics-cmd.c nvme: introduce nvme_is_fabrics to check fabrics cmd 2019-06-21 11:08:38 +02:00
fc.c nvme: introduce nvme_is_fabrics to check fabrics cmd 2019-06-21 11:08:38 +02:00
fcloop.c nvme-fcloop: add support for nvmet discovery_event op 2019-06-21 11:08:37 +02:00
io-cmd-bdev.c nvmet: fix data_len to 0 for bdev-backed write_zeroes 2019-06-04 09:29:31 -07:00
io-cmd-file.c nvmet-file: clamp-down file namespace lba_shift 2019-04-25 16:51:19 +02:00
Kconfig treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
loop.c nvme-loop: kill timeout handler 2019-04-25 16:51:41 +02:00
Makefile nvmet: introduce target-side trace 2019-06-21 11:15:46 +02:00
nvmet.h nvmet: add transport discovery change op 2019-06-21 11:08:37 +02:00
rdma.c nvmet: rename nvme_completion instances from rsp to cqe 2019-04-25 16:41:26 +02:00
tcp.c nvmet-tcp: don't fail maxr2t greater than 1 2019-04-25 16:51:19 +02:00
trace.c nvmet: introduce target-side trace 2019-06-21 11:15:46 +02:00
trace.h nvmet: introduce target-side trace 2019-06-21 11:15:46 +02:00