show_cache_info() calculates results and provides generic cache information. This makes it hard to alter pass/fail conditions.
Separate the test specific checks into CAT and CMT test files and leave only the generic information part into show_cache_info().
Signed-off-by: Ilpo Järvinen ilpo.jarvinen@linux.intel.com Reviewed-by: Reinette Chatre reinette.chatre@intel.com --- tools/testing/selftests/resctrl/cache.c | 42 +++++----------------- tools/testing/selftests/resctrl/cat_test.c | 30 ++++++++++++++-- tools/testing/selftests/resctrl/cmt_test.c | 32 +++++++++++++++-- tools/testing/selftests/resctrl/resctrl.h | 6 ++-- 4 files changed, 66 insertions(+), 44 deletions(-)
diff --git a/tools/testing/selftests/resctrl/cache.c b/tools/testing/selftests/resctrl/cache.c index 0c18603435c8..32e262fa2a6c 100644 --- a/tools/testing/selftests/resctrl/cache.c +++ b/tools/testing/selftests/resctrl/cache.c @@ -279,43 +279,17 @@ int cat_val(struct resctrl_val_param *param, size_t span) }
/* - * show_cache_info: show cache test result information - * @sum_llc_val: sum of LLC cache result data - * @no_of_bits: number of bits - * @cache_span: cache span in bytes for CMT or in lines for CAT - * @max_diff: max difference - * @max_diff_percent: max difference percentage - * @num_of_runs: number of runs - * @platform: show test information on this platform - * @cmt: CMT test or CAT test - * - * Return: 0 on success. non-zero on failure. + * show_cache_info - Show generic cache test information + * @no_of_bits: Number of bits + * @avg_llc_val: Average of LLC cache result data + * @cache_span: Cache span + * @lines: @cache_span in lines or bytes */ -int show_cache_info(unsigned long sum_llc_val, int no_of_bits, - size_t cache_span, unsigned long max_diff, - unsigned long max_diff_percent, unsigned long num_of_runs, - bool platform, bool cmt) +void show_cache_info(int no_of_bits, unsigned long avg_llc_val, + size_t cache_span, bool lines) { - unsigned long avg_llc_val = 0; - float diff_percent; - long avg_diff = 0; - int ret; - - 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; - - ret = platform && abs((int)diff_percent) > max_diff_percent && - (cmt ? (abs(avg_diff) > max_diff) : true); - - ksft_print_msg("%s Check cache miss rate within %lu%%\n", - ret ? "Fail:" : "Pass:", max_diff_percent); - - ksft_print_msg("Percent diff=%d\n", abs((int)diff_percent)); ksft_print_msg("Number of bits: %d\n", no_of_bits); ksft_print_msg("Average LLC val: %lu\n", avg_llc_val); - ksft_print_msg("Cache span (%s): %zu\n", cmt ? "bytes" : "lines", + ksft_print_msg("Cache span (%s): %zu\n", lines ? "lines" : "bytes", cache_span); - - return ret; } diff --git a/tools/testing/selftests/resctrl/cat_test.c b/tools/testing/selftests/resctrl/cat_test.c index 1e3c5432ecff..0955f819bd83 100644 --- a/tools/testing/selftests/resctrl/cat_test.c +++ b/tools/testing/selftests/resctrl/cat_test.c @@ -41,6 +41,30 @@ static int cat_setup(struct resctrl_val_param *p) return ret; }
+static int show_results_info(unsigned long sum_llc_val, int no_of_bits, + unsigned long cache_span, unsigned long max_diff, + unsigned long max_diff_percent, unsigned long num_of_runs, + bool platform) +{ + unsigned long avg_llc_val = 0; + float diff_percent; + int ret; + + avg_llc_val = sum_llc_val / num_of_runs; + diff_percent = ((float)cache_span - avg_llc_val) / cache_span * 100; + + ret = platform && abs((int)diff_percent) > max_diff_percent; + + ksft_print_msg("%s Check cache miss rate within %lu%%\n", + ret ? "Fail:" : "Pass:", max_diff_percent); + + ksft_print_msg("Percent diff=%d\n", abs((int)diff_percent)); + + show_cache_info(no_of_bits, avg_llc_val, cache_span, true); + + return ret; +} + static int check_results(struct resctrl_val_param *param, size_t span) { char *token_array[8], temp[512]; @@ -76,9 +100,9 @@ static int check_results(struct resctrl_val_param *param, size_t span) fclose(fp); no_of_bits = count_bits(param->mask);
- return show_cache_info(sum_llc_perf_miss, no_of_bits, span / 64, - MAX_DIFF, MAX_DIFF_PERCENT, runs - 1, - get_vendor() == ARCH_INTEL, false); + return show_results_info(sum_llc_perf_miss, no_of_bits, span / 64, + MAX_DIFF, MAX_DIFF_PERCENT, runs - 1, + get_vendor() == ARCH_INTEL); }
void cat_test_cleanup(void) diff --git a/tools/testing/selftests/resctrl/cmt_test.c b/tools/testing/selftests/resctrl/cmt_test.c index a14d46353865..604690cd8b3e 100644 --- a/tools/testing/selftests/resctrl/cmt_test.c +++ b/tools/testing/selftests/resctrl/cmt_test.c @@ -27,6 +27,33 @@ static int cmt_setup(struct resctrl_val_param *p) return 0; }
+static int show_results_info(unsigned long sum_llc_val, int no_of_bits, + unsigned long cache_span, unsigned long max_diff, + unsigned long max_diff_percent, unsigned long num_of_runs, + bool platform) +{ + unsigned long avg_llc_val = 0; + float diff_percent; + long avg_diff = 0; + int ret; + + 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; + + ret = platform && abs((int)diff_percent) > max_diff_percent && + abs(avg_diff) > max_diff; + + ksft_print_msg("%s Check cache miss rate within %lu%%\n", + ret ? "Fail:" : "Pass:", max_diff_percent); + + ksft_print_msg("Percent diff=%d\n", abs((int)diff_percent)); + + show_cache_info(no_of_bits, avg_llc_val, cache_span, false); + + return ret; +} + static int check_results(struct resctrl_val_param *param, size_t span, int no_of_bits) { char *token_array[8], temp[512]; @@ -58,9 +85,8 @@ static int check_results(struct resctrl_val_param *param, size_t span, int no_of } fclose(fp);
- return show_cache_info(sum_llc_occu_resc, no_of_bits, span, - MAX_DIFF, MAX_DIFF_PERCENT, runs - 1, - true, true); + return show_results_info(sum_llc_occu_resc, no_of_bits, span, + MAX_DIFF, MAX_DIFF_PERCENT, runs - 1, true); }
void cmt_test_cleanup(void) diff --git a/tools/testing/selftests/resctrl/resctrl.h b/tools/testing/selftests/resctrl/resctrl.h index 3983226065f3..47b871df2b0e 100644 --- a/tools/testing/selftests/resctrl/resctrl.h +++ b/tools/testing/selftests/resctrl/resctrl.h @@ -113,10 +113,8 @@ unsigned int count_bits(unsigned long n); void cmt_test_cleanup(void); int get_core_sibling(int cpu_no); int measure_llc_resctrl(const char *filename, int bm_pid); -int show_cache_info(unsigned long sum_llc_val, int no_of_bits, - size_t cache_span, unsigned long max_diff, - unsigned long max_diff_percent, unsigned long num_of_runs, - bool platform, bool cmt); +void show_cache_info(int no_of_bits, unsigned long avg_llc_val, + size_t cache_span, bool lines);
/* * cache_portion_size - Calculate the size of a cache portion