selftests/resctrl: Don't use variable argument list for ->setup()

struct resctrl_val_param has ->setup() function that accepts variable
argument list. All test cases use only 1 argument as input and it's
the struct resctrl_val_param pointer.

Instead of variable argument list, directly pass struct
resctrl_val_param pointer as the only parameter to ->setup().

Co-developed-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
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>

tools/testing/selftests/resctrl/cache.c

@@ -236,7 +236,7 @@ int cat_val(struct resctrl_val_param *param)
 	/* Test runs until the callback setup() tells the test to stop. */
 	while (1) {
 		if (!strncmp(resctrl_val, CAT_STR, sizeof(CAT_STR))) {
-			ret = param->setup(1, param);
+			ret = param->setup(param);
 			if (ret == END_OF_TESTS) {
 				ret = 0;
 				break;

tools/testing/selftests/resctrl/cat_test.c

@@ -27,17 +27,11 @@ static unsigned long cache_size;
  * con_mon grp, mon_grp in resctrl FS.
  * Run 5 times in order to get average values.
  */
-static int cat_setup(int num, ...)
+static int cat_setup(struct resctrl_val_param *p)
 {
-	struct resctrl_val_param *p;
 	char schemata[64];
-	va_list param;
 	int ret = 0;
 
-	va_start(param, num);
-	p = va_arg(param, struct resctrl_val_param *);
-	va_end(param);
-
 	/* Run NUM_OF_RUNS times */
 	if (p->num_of_runs >= NUM_OF_RUNS)
 		return END_OF_TESTS;

tools/testing/selftests/resctrl/cmt_test.c

@@ -21,15 +21,8 @@ static char cbm_mask[256];
 static unsigned long long_mask;
 static unsigned long cache_size;
 
-static int cmt_setup(int num, ...)
+static int cmt_setup(struct resctrl_val_param *p)
 {
-	struct resctrl_val_param *p;
-	va_list param;
-
-	va_start(param, num);
-	p = va_arg(param, struct resctrl_val_param *);
-	va_end(param);
-
 	/* Run NUM_OF_RUNS times */
 	if (p->num_of_runs >= NUM_OF_RUNS)
 		return END_OF_TESTS;

tools/testing/selftests/resctrl/mba_test.c

@@ -22,18 +22,12 @@
  * con_mon grp, mon_grp in resctrl FS.
  * For each allocation, run 5 times in order to get average values.
  */
-static int mba_setup(int num, ...)
+static int mba_setup(struct resctrl_val_param *p)
 {
 	static int runs_per_allocation, allocation = 100;
-	struct resctrl_val_param *p;
 	char allocation_str[64];
-	va_list param;
 	int ret;
 
-	va_start(param, num);
-	p = va_arg(param, struct resctrl_val_param *);
-	va_end(param);
-
 	if (runs_per_allocation >= NUM_OF_RUNS)
 		runs_per_allocation = 0;
 

tools/testing/selftests/resctrl/mbm_test.c

@@ -86,16 +86,10 @@ static int check_results(size_t span)
 	return ret;
 }
 
-static int mbm_setup(int num, ...)
+static int mbm_setup(struct resctrl_val_param *p)
 {
-	struct resctrl_val_param *p;
-	va_list param;
 	int ret = 0;
 
-	va_start(param, num);
-	p = va_arg(param, struct resctrl_val_param *);
-	va_end(param);
-
 	/* Run NUM_OF_RUNS times */
 	if (p->num_of_runs >= NUM_OF_RUNS)
 		return END_OF_TESTS;

tools/testing/selftests/resctrl/resctrl.h

@@ -3,7 +3,6 @@
 #ifndef RESCTRL_H
 #define RESCTRL_H
 #include <stdio.h>
-#include <stdarg.h>
 #include <math.h>
 #include <errno.h>
 #include <sched.h>
@@ -68,7 +67,7 @@ struct resctrl_val_param {
 	char		*bw_report;
 	unsigned long	mask;
 	int		num_of_runs;
-	int		(*setup)(int num, ...);
+	int		(*setup)(struct resctrl_val_param *param);
 };
 
 #define MBM_STR			"mbm"

tools/testing/selftests/resctrl/resctrl_val.c

@@ -759,7 +759,7 @@ int resctrl_val(char **benchmark_cmd, struct resctrl_val_param *param)
 
 	/* Test runs until the callback setup() tells the test to stop. */
 	while (1) {
-		ret = param->setup(1, param);
+		ret = param->setup(param);
 		if (ret == END_OF_TESTS) {
 			ret = 0;
 			break;