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[V3,0/3] selftests: add ublk selftests

Message ID 20250228161919.2869102-1-ming.lei@redhat.com
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Series selftests: add ublk selftests | expand

Message

Ming Lei Feb. 28, 2025, 4:19 p.m. UTC 
Hello Jens,

This patchset adds ublk kernel selftests, which is very handy for
developer for verifying kernel change, especially ublk heavily depends
on io_uring subsystem. Also it provides template for target implementation.

Please consider it for v6.15.

The 1st patch adds one ublk utility and one entry test.
The 2nd patch adds test over file backed ublk.
The 3rd patch adds test for ublk zero copy.

How to run:
	- make install
	- make headers_install INSTALL_HDR_PATH=/usr	# in case UAPI is changed
	- reboot
	- make -C tools/testing/selftests TARGETS=ublk run_test

Thanks,

V3:
	- re-organize code, and move target code into standalone source file
	- fix one error handling bug
	- add licence tag
	- add dma limit for zero copy file backed target
	- kill checkpatch ERROR

V2:
	- fix one sqe allocation bug, so ublk zero copy with io_link can pass
	- dump log in case of error
	- add one more test for mkfs/mount on zero copy


Ming Lei (3):
  selftests: ublk: add kernel selftests for ublk
  selftests: ublk: add file backed ublk
  selftests: ublk: add ublk zero copy test

 MAINTAINERS                                  |    1 +
 tools/testing/selftests/Makefile             |    1 +
 tools/testing/selftests/ublk/.gitignore      |    3 +
 tools/testing/selftests/ublk/Makefile        |   16 +
 tools/testing/selftests/ublk/config          |    1 +
 tools/testing/selftests/ublk/file_backed.c   |  220 ++++
 tools/testing/selftests/ublk/kublk.c         | 1110 ++++++++++++++++++
 tools/testing/selftests/ublk/kublk.h         |  326 +++++
 tools/testing/selftests/ublk/null.c          |   38 +
 tools/testing/selftests/ublk/test_common.sh  |  113 ++
 tools/testing/selftests/ublk/test_loop_01.sh |   31 +
 tools/testing/selftests/ublk/test_loop_02.sh |   22 +
 tools/testing/selftests/ublk/test_loop_03.sh |   33 +
 tools/testing/selftests/ublk/test_loop_04.sh |   22 +
 tools/testing/selftests/ublk/test_null_01.sh |   19 +
 15 files changed, 1956 insertions(+)
 create mode 100644 tools/testing/selftests/ublk/.gitignore
 create mode 100644 tools/testing/selftests/ublk/Makefile
 create mode 100644 tools/testing/selftests/ublk/config
 create mode 100644 tools/testing/selftests/ublk/file_backed.c
 create mode 100644 tools/testing/selftests/ublk/kublk.c
 create mode 100644 tools/testing/selftests/ublk/kublk.h
 create mode 100644 tools/testing/selftests/ublk/null.c
 create mode 100755 tools/testing/selftests/ublk/test_common.sh
 create mode 100755 tools/testing/selftests/ublk/test_loop_01.sh
 create mode 100755 tools/testing/selftests/ublk/test_loop_02.sh
 create mode 100755 tools/testing/selftests/ublk/test_loop_03.sh
 create mode 100755 tools/testing/selftests/ublk/test_loop_04.sh
 create mode 100755 tools/testing/selftests/ublk/test_null_01.sh