Cleaning up after tests is implemented separately for individual tests
and called at the end of each test execution. Since these functions are
very similar and a more generalized test framework was introduced a
function pointer in the resctrl_test struct can be used to reduce the
amount of function calls.

These functions are also all called in the ctrl-c handler because the
handler isn't aware which test is currently running. Since the handler
is implemented with a sigaction no function parameters can be passed
there but information about what test is currently running can be passed
with a global variable.

Changelog v3:
- Make current_test static.
- Add callback NULL check to the ctrl-c handler.

Changelog v2:
- Make current_test a const pointer limited in scope to resctrl_val
  file.
- Remove tests_cleanup from resctrl.h.
- Cleanup 'goto out' path and labels in individual test functions.

Older versions of this series:
[v1] https://lore.kernel.org/all/cover.1708434017.git.maciej.wieczor-retman@intel.com/
[v2] https://lore.kernel.org/all/cover.1708596015.git.maciej.wieczor-retman@intel.com/

Maciej Wieczor-Retman (3):
  selftests/resctrl: Add cleanup function to test framework
  selftests/resctrl: Simplify cleanup in ctrl-c handler
  selftests/resctrl: Move cleanups out of individual tests

 tools/testing/selftests/resctrl/cat_test.c      |  8 +++-----
 tools/testing/selftests/resctrl/cmt_test.c      |  4 ++--
 tools/testing/selftests/resctrl/mba_test.c      |  8 +++-----
 tools/testing/selftests/resctrl/mbm_test.c      |  8 +++-----
 tools/testing/selftests/resctrl/resctrl.h       |  9 +++------
 tools/testing/selftests/resctrl/resctrl_tests.c | 16 +++++-----------
 tools/testing/selftests/resctrl/resctrl_val.c   |  7 +++++--
 7 files changed, 24 insertions(+), 36 deletions(-)

-- 
2.43.2