[PATCH v2 0/4] Some improvements of resctrl selftest

From: Shaopeng Tan
Date: Tue Oct 04 2022 - 21:44:50 EST


The aim of this patch series is to improve the resctrl selftest.
Without these fixes, some unnecessary processing will be executed
and test results will be confusing.
There is no behavior change in test themselves.

[patch 1] Make write_schemata() run to set up shemata with 100% allocation
on first run in MBM test.
[patch 2] The MBA test result message is always output as "ok",
make output message to be "not ok" if MBA check result is failed.
[patch 3] Before exiting each test CMT/CAT/MBM/MBA, clear test result
files function cat/cmt/mbm/mba_test_cleanup() are called
twice. Delete once.
[patch 4] When a child process is created by fork(), the buffer of the
parent process is also copied. Flush the buffer before
executing fork().

This patch series is based on Linux v6.0-rc7

Difference from v1:
[patch 1] Make write_schemata() always be called, and use
resctrl_val_param->num_of_runs instead of static num_of_runs.
[patch 2] Add Reviewed-by tag.
[patch 3] Remove cat/cmt/mbm/mba_test_cleanup() from run_cmt/mbm/mba_test()
and modify changelog.
[patch 4] Add Reviewed-by tag.

Notice that I dropped the one patch from v1 in this series
("[PATCH 4/5] selftests/resctrl: Kill the child process before exiting
the parent process if an exception occurs").
This is because the bug will take some time to fix, I will submit it
separately in the future.

Shaopeng Tan (4):
selftests/resctrl: Fix set up shemata with 100% allocation on first
run in MBM test.
selftests/resctrl: Return MBA check result and make it to output
selftests/resctrl: Remove duplicate codes that clear each test result
selftests/resctrl: Flush stdout file buffer before executing fork()

tools/testing/selftests/resctrl/cat_test.c | 1 +
tools/testing/selftests/resctrl/mba_test.c | 8 ++++----
tools/testing/selftests/resctrl/mbm_test.c | 6 +++---
tools/testing/selftests/resctrl/resctrl_tests.c | 4 ----
tools/testing/selftests/resctrl/resctrl_val.c | 1 +
tools/testing/selftests/resctrl/resctrlfs.c | 1 +
6 files changed, 10 insertions(+), 11 deletions(-)