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| author | Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> | 2023-07-17 16:15:06 +0300 |
|---|---|---|
| committer | Shuah Khan <skhan@linuxfoundation.org> | 2023-07-25 17:54:05 +0300 |
| commit | 3dad011b9ab1a3904b449c9351a6d9be4b0afbc5 (patch) | |
| tree | ccbd86d5fb49015c7f4050adfc11d82be8be24b4 /tools/testing/selftests/resctrl | |
| parent | 85b73447a44cd215815464a0981604e177384192 (diff) | |
| download | linux-3dad011b9ab1a3904b449c9351a6d9be4b0afbc5.tar.xz | |
selftests/resctrl: Pass the real number of tests to show_cache_info()
Results include warm-up test which is discarded before passing the sum
to show_cache_info(). show_cache_info() handles this by subtracting one
from the number of tests in divisor. It is a trappy construct to have
sum and number of tests parameters to disagree like this.
A more logical place for subtracting the skipped tests is where the sum
is calculated so move it there. Pass the correct number of tests to
show_cache_info() so it can be used directly as the divisor for
calculating the average.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
Tested-by: Babu Moger <babu.moger@amd.com>
Tested-by: Shaopeng Tan (Fujitsu) <tan.shaopeng@fujitsu.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Diffstat (limited to 'tools/testing/selftests/resctrl')
| -rw-r--r-- | tools/testing/selftests/resctrl/cache.c | 2 | ||||
| -rw-r--r-- | tools/testing/selftests/resctrl/cat_test.c | 2 | ||||
| -rw-r--r-- | tools/testing/selftests/resctrl/cmt_test.c | 2 |
3 files changed, 3 insertions, 3 deletions
diff --git a/tools/testing/selftests/resctrl/cache.c b/tools/testing/selftests/resctrl/cache.c index 9c0e4ce4f28e..18ebd1324cb3 100644 --- a/tools/testing/selftests/resctrl/cache.c +++ b/tools/testing/selftests/resctrl/cache.c @@ -294,7 +294,7 @@ int show_cache_info(unsigned long sum_llc_val, int no_of_bits, long avg_diff = 0; int ret; - avg_llc_val = sum_llc_val / (num_of_runs - 1); + avg_llc_val = sum_llc_val / num_of_runs; avg_diff = (long)abs(cache_span - avg_llc_val); diff_percent = ((float)cache_span - avg_llc_val) / cache_span * 100; diff --git a/tools/testing/selftests/resctrl/cat_test.c b/tools/testing/selftests/resctrl/cat_test.c index ed6c8e64ad11..3848dfb46aba 100644 --- a/tools/testing/selftests/resctrl/cat_test.c +++ b/tools/testing/selftests/resctrl/cat_test.c @@ -77,7 +77,7 @@ static int check_results(struct resctrl_val_param *param) no_of_bits = count_bits(param->mask); return show_cache_info(sum_llc_perf_miss, no_of_bits, param->span / 64, - MAX_DIFF, MAX_DIFF_PERCENT, NUM_OF_RUNS, + MAX_DIFF, MAX_DIFF_PERCENT, runs - 1, get_vendor() == ARCH_INTEL, false); } diff --git a/tools/testing/selftests/resctrl/cmt_test.c b/tools/testing/selftests/resctrl/cmt_test.c index 0ac9d6bbd13d..cb2197647c6c 100644 --- a/tools/testing/selftests/resctrl/cmt_test.c +++ b/tools/testing/selftests/resctrl/cmt_test.c @@ -59,7 +59,7 @@ static int check_results(struct resctrl_val_param *param, int no_of_bits) fclose(fp); return show_cache_info(sum_llc_occu_resc, no_of_bits, param->span, - MAX_DIFF, MAX_DIFF_PERCENT, NUM_OF_RUNS, + MAX_DIFF, MAX_DIFF_PERCENT, runs - 1, true, true); } |