Hi all,
Here's a series to improve resctrl selftests. It contains following
improvements:
- Excludes shareable bits from CAT test allocation to avoid interference
- Alters read pattern to defeat HW prefetcher optimizations
- Rewrites CAT test to make the CAT test reliable and truly measure
if CAT is working or not
- Introduces generalized test framework making easier to add new tests
- Adds L2 CAT test
- Lots of other cleanups & refactoring
The patches up to CAT test rewrite have been earlier on the mailing list.
I've tried to address all the comments made against them back then.
This series have been tested across a large number of systems from
different generations.
Ilpo Järvinen (24):
selftests/resctrl: Split fill_buf to allow tests finer-grained control
selftests/resctrl: Refactor fill_buf functions
selftests/resctrl: Refactor get_cbm_mask()
selftests/resctrl: Mark get_cache_size() cache_type const
selftests/resctrl: Create cache_size() helper
selftests/resctrl: Exclude shareable bits from schemata in CAT test
selftests/resctrl: Split measure_cache_vals() function
selftests/resctrl: Split show_cache_info() to test specific and
generic parts
selftests/resctrl: Remove unnecessary __u64 -> unsigned long
conversion
selftests/resctrl: Remove nested calls in perf event handling
selftests/resctrl: Consolidate naming of perf event related things
selftests/resctrl: Improve perf init
selftests/resctrl: Convert perf related globals to locals
selftests/resctrl: Move cat_val() to cat_test.c and rename to
cat_test()
selftests/resctrl: Read in less obvious order to defeat prefetch
optimizations
selftests/resctrl: Rewrite Cache Allocation Technology (CAT) test
selftests/resctrl: Create struct for input parameter
selftests/resctrl: Introduce generalized test framework
selftests/resctrl: Pass write_schemata() resource instead of test name
selftests/resctrl: Add helper to convert L2/3 to integer
selftests/resctrl: Get resource id from cache id
selftests/resctrl: Add test groups and name L3 CAT test L3_CAT
selftests/resctrl: Add L2 CAT test
selftests/resctrl: Ignore failures from L2 CAT test with <= 2 bits
tools/testing/selftests/resctrl/cache.c | 263 +++---------
tools/testing/selftests/resctrl/cat_test.c | 386 ++++++++++++------
tools/testing/selftests/resctrl/cmt_test.c | 72 +++-
tools/testing/selftests/resctrl/fill_buf.c | 114 +++---
tools/testing/selftests/resctrl/mba_test.c | 24 +-
tools/testing/selftests/resctrl/mbm_test.c | 26 +-
tools/testing/selftests/resctrl/resctrl.h | 102 ++++-
.../testing/selftests/resctrl/resctrl_tests.c | 202 ++++-----
tools/testing/selftests/resctrl/resctrl_val.c | 6 +-
tools/testing/selftests/resctrl/resctrlfs.c | 234 +++++++----
10 files changed, 807 insertions(+), 622 deletions(-)
--
2.30.2
