Re: [PATCH v5 00/16] selftests/resctrl: resctrl_val() related cleanups & improvements

[Moger, Babu]

Tested the series.

Tested-by: Babu Moger <babu.moger@xxxxxxx>


On 5/31/2024 8:11 AM, Ilpo Järvinen wrote:
> Hi all,
>
> This series does a number of cleanups into resctrl_val() and
> generalizes it by removing test name specific handling from the
> function.
>
> Hopefully these reach also Shuah successfully as I've recently seen
> rejects for mail from @linux.intel.com to gmail addresses.
>
> v5:
> - Open mem bw file only once and use rewind().
> - Add \n to mem bw file read to allow reading fresh values from the file.
> - Return 0 if create_grp() is given NULL grp_name (matches the original
>    behavior). Mention this in function's kerneldoc.
> - Cast pid_t to int before printing with %d.
> - Caps/typo fixes to kerneldoc and commit messages.
> - Use imperative tone in commit messages and improve them based on points
>    that came up during review.
>
> v4:
> - Merged close fix into IMC READ+WRITE rework patch
> - Add loop to reset imc_counters_config fds to -1 to be able know which
>    need closing
> - Introduce perf_close_imc_mem_bw() to close fds
> - Open resctrl mem bw file (twice) beforehand to avoid opening it during
>    the test
> - Remove MBM .mongrp setup
> - Remove mongrp from CMT test
>
> v3:
> - Rename init functions to <testname>_init()
> - Replace for loops with READ+WRITE statements for clarity
> - Don't drop Return: entry from perf_open_imc_mem_bw() func comment
> - New patch: Fix closing of IMC fds in case of error
> - New patch: Make "bandwidth" consistent in comments & prints
> - New patch: Simplify mem bandwidth file code
> - Remove wrong comment
> - Changed grp_name check to return -1 on fail (internal sanity check)
>
> v2:
> - Resolved conflicts with kselftest/next
> - Spaces -> tabs correction
>
> Ilpo Järvinen (16):
>    selftests/resctrl: Fix closing IMC fds on error and open-code R+W
>      instead of loops
>    selftests/resctrl: Calculate resctrl FS derived mem bw over sleep(1)
>      only
>    selftests/resctrl: Make "bandwidth" consistent in comments & prints
>    selftests/resctrl: Consolidate get_domain_id() into resctrl_val()
>    selftests/resctrl: Use correct type for pids
>    selftests/resctrl: Cleanup bm_pid and ppid usage & limit scope
>    selftests/resctrl: Rename measure_vals() to measure_mem_bw_vals() &
>      document
>    selftests/resctrl: Simplify mem bandwidth file code for MBA & MBM
>      tests
>    selftests/resctrl: Add ->measure() callback to resctrl_val_param
>    selftests/resctrl: Add ->init() callback into resctrl_val_param
>    selftests/resctrl: Simplify bandwidth report type handling
>    selftests/resctrl: Make some strings passed to resctrlfs functions
>      const
>    selftests/resctrl: Convert ctrlgrp & mongrp to pointers
>    selftests/resctrl: Remove mongrp from MBA test
>    selftests/resctrl: Remove mongrp from CMT test
>    selftests/resctrl: Remove test name comparing from
>      write_bm_pid_to_resctrl()
>
>   tools/testing/selftests/resctrl/cache.c       |  10 +-
>   tools/testing/selftests/resctrl/cat_test.c    |   5 +-
>   tools/testing/selftests/resctrl/cmt_test.c    |  22 +-
>   tools/testing/selftests/resctrl/mba_test.c    |  26 +-
>   tools/testing/selftests/resctrl/mbm_test.c    |  26 +-
>   tools/testing/selftests/resctrl/resctrl.h     |  49 ++-
>   tools/testing/selftests/resctrl/resctrl_val.c | 364 ++++++++----------
>   tools/testing/selftests/resctrl/resctrlfs.c   |  67 ++--
>   8 files changed, 290 insertions(+), 279 deletions(-)

--
- Babu Moger