Merge tag 'linux-kselftest-next-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull Kselftest updates from Shuah Khan:

 - fixes and updates to resctrl test from Fenghua Yu and Reinette Chatre

 - fixes to Kselftest documentation, framework

 - minor spelling correction in timers test

* tag 'linux-kselftest-next-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: (25 commits)
  selftests/resctrl: Change a few printed messages
  Documentation: kselftest: fix path to test module files
  selftests/resctrl: Create .gitignore to include resctrl_tests
  selftests/resctrl: Fix checking for < 0 for unsigned values
  selftests/resctrl: Fix incorrect parsing of iMC counters
  selftests/resctrl: Fix unmount resctrl FS
  selftests/resctrl: Skip the test if requested resctrl feature is not supported
  selftests/resctrl: Modularize resctrl test suite main() function
  selftests/resctrl: Don't hard code value of "no_of_bits" variable
  selftests/resctrl: Fix MBA/MBM results reporting format
  selftests/resctrl: Use resctrl/info for feature detection
  selftests/resctrl: Check for resctrl mount point only if resctrl FS is supported
  selftests/resctrl: Add config dependencies
  selftests/resctrl: Fix a printed message
  selftests/resctrl: Share show_cache_info() by CAT and CMT tests
  selftests/resctrl: Call kselftest APIs to log test results
  selftests/resctrl: Rename CQM test as CMT test
  selftests/resctrl: Fix missing options "-n" and "-p"
  selftests/resctrl: Ensure sibling CPU is not same as original CPU
  selftests/resctrl: Clean up resctrl features check
  ...

1 files changed, 18 insertions, 39 deletions

diff --git a/tools/testing/selftests/resctrl/cat_test.c b/tools/testing/selftests/resctrl/cat_test.c
index 5da43767b973..cd4f68388e0f 100644
--- a/tools/testing/selftests/resctrl/cat_test.c
+++ b/tools/testing/selftests/resctrl/cat_test.c
@@ -17,10 +17,10 @@
 #define MAX_DIFF_PERCENT	4
 #define MAX_DIFF		1000000
 
-int count_of_bits;
-char cbm_mask[256];
-unsigned long long_mask;
-unsigned long cache_size;
+static int count_of_bits;
+static char cbm_mask[256];
+static unsigned long long_mask;
+static unsigned long cache_size;
 
 /*
  * Change schemata. Write schemata to specified
@@ -52,27 +52,6 @@ static int cat_setup(int num, ...)
 	return ret;
 }
 
-static void show_cache_info(unsigned long sum_llc_perf_miss, int no_of_bits,
-			    unsigned long span)
-{
-	unsigned long allocated_cache_lines = span / 64;
-	unsigned long avg_llc_perf_miss = 0;
-	float diff_percent;
-
-	avg_llc_perf_miss = sum_llc_perf_miss / (NUM_OF_RUNS - 1);
-	diff_percent = ((float)allocated_cache_lines - avg_llc_perf_miss) /
-				allocated_cache_lines * 100;
-
-	printf("%sok CAT: cache miss rate within %d%%\n",
-	       !is_amd && abs((int)diff_percent) > MAX_DIFF_PERCENT ?
-	       "not " : "", MAX_DIFF_PERCENT);
-	tests_run++;
-	printf("# Percent diff=%d\n", abs((int)diff_percent));
-	printf("# Number of bits: %d\n", no_of_bits);
-	printf("# Avg_llc_perf_miss: %lu\n", avg_llc_perf_miss);
-	printf("# Allocated cache lines: %lu\n", allocated_cache_lines);
-}
-
 static int check_results(struct resctrl_val_param *param)
 {
 	char *token_array[8], temp[512];
@@ -80,7 +59,7 @@ static int check_results(struct resctrl_val_param *param)
 	int runs = 0, no_of_bits = 0;
 	FILE *fp;
 
-	printf("# Checking for pass/fail\n");
+	ksft_print_msg("Checking for pass/fail\n");
 	fp = fopen(param->filename, "r");
 	if (!fp) {
 		perror("# Cannot open file");
@@ -108,9 +87,9 @@ static int check_results(struct resctrl_val_param *param)
 	fclose(fp);
 	no_of_bits = count_bits(param->mask);
 
-	show_cache_info(sum_llc_perf_miss, no_of_bits, param->span);
-
-	return 0;
+	return show_cache_info(sum_llc_perf_miss, no_of_bits, param->span / 64,
+			       MAX_DIFF, MAX_DIFF_PERCENT, NUM_OF_RUNS,
+			       !is_amd, false);
 }
 
 void cat_test_cleanup(void)
@@ -132,11 +111,8 @@ int cat_perf_miss_val(int cpu_no, int n, char *cache_type)
 	if (ret)
 		return ret;
 
-	if (!validate_resctrl_feature_request("cat"))
-		return -1;
-
 	/* Get default cbm mask for L3/L2 cache */
-	ret = get_cbm_mask(cache_type);
+	ret = get_cbm_mask(cache_type, cbm_mask);
 	if (ret)
 		return ret;
 
@@ -146,15 +122,18 @@ int cat_perf_miss_val(int cpu_no, int n, char *cache_type)
 	ret = get_cache_size(cpu_no, cache_type, &cache_size);
 	if (ret)
 		return ret;
-	printf("cache size :%lu\n", cache_size);
+	ksft_print_msg("Cache size :%lu\n", cache_size);
 
 	/* Get max number of bits from default-cabm mask */
 	count_of_bits = count_bits(long_mask);
 
-	if (n < 1 || n > count_of_bits - 1) {
-		printf("Invalid input value for no_of_bits n!\n");
-		printf("Please Enter value in range 1 to %d\n",
-		       count_of_bits - 1);
+	if (!n)
+		n = count_of_bits / 2;
+
+	if (n > count_of_bits - 1) {
+		ksft_print_msg("Invalid input value for no_of_bits n!\n");
+		ksft_print_msg("Please enter value in range 1 to %d\n",
+			       count_of_bits - 1);
 		return -1;
 	}
 
@@ -164,7 +143,7 @@ int cat_perf_miss_val(int cpu_no, int n, char *cache_type)
 		return -1;
 
 	struct resctrl_val_param param = {
-		.resctrl_val	= "cat",
+		.resctrl_val	= CAT_STR,
 		.cpu_no		= cpu_no,
 		.mum_resctrlfs	= 0,
 		.setup		= cat_setup,