[PATCH 0/3] kunit: add support in kunit.py for --qemu_args

[Daniel Latypov <dlatypov@google.com>]

Note: this series applies on top of
https://lore.kernel.org/linux-kselftest/20220516194730.1546328-2-dlatypov@google.com/.
That patch greatly simplified the process of adding new flags.

This flag would let users pass additional arguments to QEMU when using a
non-UML arch to run their tests.
E.g. for kcsan's tests, they require SMP and with this patch, you can do
$ ./tools/testing/kunit/kunit.py run --kconfig_add=CONFIG_SMP --qemu_args='-smp 8'

This is proposed as an alternative to users manually creating new
qemu_config python files and also to [1], where we discussed checking in
a new x86_64 variant w/ `-smp 8` hard-coded into it.

This patch also contains a fix to the example `run_kunit` bash function
since it didn't quote properly and would parse the example above as
  --qemu_args='-smp' '8'
no matter how you tried to quote your arguments.

[1] https://lore.kernel.org/linux-kselftest/20220518073232.526443-1-davidgow@google.com/

Daniel Latypov (3):
  Documentation: kunit: fix example run_kunit func to allow spaces in
    args
  kunit: tool: simplify creating LinuxSourceTreeOperations
  kunit: tool: introduce --qemu_args

 .../dev-tools/kunit/running_tips.rst          |  2 +-
 tools/testing/kunit/kunit.py                  | 14 +++++++++-
 tools/testing/kunit/kunit_kernel.py           | 26 +++++++++++--------
 tools/testing/kunit/kunit_tool_test.py        | 20 +++++++++++---
 4 files changed, 46 insertions(+), 16 deletions(-)

-- 
2.36.1.124.g0e6072fb45-goog