[RFC v4 0/1] nvme: add passthrough admin error logging opt-in

[Alan Adamson]

v4:
- Change sysfs attribute to passthru_admin_err_logging
- Only log passthrough admin commands.  IO passthrough commands will always be logged.

v3:
- Log a passthrough specific message that dumps CDW* contents.
- Enable/disable vis sysfs rather than debugfs.

v2:
- Included Pankaj Raghav's patch 'nvme: ignore starting sector while error logging for passthrough requests'
  with a couple changes.
- Moved error_logging flag to nvme_ctrl structure
- The entire nvme-debugfs.c does not need to be guarded by #ifdef CONFIG_FAULT_INJECTION_DEBUG_FS.
- Use IS_ENABLED((CONFIG_NVME_ERROR_LOGGING_DEBUG_FS)) to determine if error logging should be
  initialized.
- Various other nits.

Alan Adamson (1):
  nvme: add passthrough admin error logging opt-in

 drivers/nvme/host/core.c | 97 +++++++++++++++++++++++++++++++++++++---
 drivers/nvme/host/nvme.h |  1 +
 2 files changed, 93 insertions(+), 5 deletions(-)

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2.31.1