selftests/resctrl: Remove unnecessary __u64 -> unsigned long conversion

Perf counters are __u64 but the code converts them to unsigned long
before printing them out.

Remove unnecessary type conversion and retain the perf originating
value as __u64.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>

tools/testing/selftests/resctrl/cache.c

@@ -83,9 +83,8 @@ static int reset_enable_llc_perf(pid_t pid, int cpu_no)
  *
  * Return: =0 on success.  <0 on failure.
  */
-static int get_llc_perf(unsigned long *llc_perf_miss)
+static int get_llc_perf(__u64 *llc_perf_miss)
 {
-	__u64 total_misses;
 	int ret;
 
 	/* Stop counters after one span to get miss rate */
@@ -98,8 +97,7 @@ static int get_llc_perf(unsigned long *llc_perf_miss)
 		return -1;
 	}
 
-	total_misses = rf_cqm.values[0].value;
-	*llc_perf_miss = total_misses;
+	*llc_perf_miss = rf_cqm.values[0].value;
 
 	return 0;
 }
@@ -147,22 +145,20 @@ static int get_llc_occu_resctrl(unsigned long *llc_occupancy)
  *
  * Return:		0 on success, < 0 on error.
  */
-static int print_results_cache(const char *filename, int bm_pid,
-			       unsigned long llc_value)
+static int print_results_cache(const char *filename, int bm_pid, __u64 llc_value)
 {
 	FILE *fp;
 
 	if (strcmp(filename, "stdio") == 0 || strcmp(filename, "stderr") == 0) {
-		printf("Pid: %d \t LLC_value: %lu\n", bm_pid,
-		       llc_value);
+		printf("Pid: %d \t LLC_value: %llu\n", bm_pid, llc_value);
 	} else {
 		fp = fopen(filename, "a");
 		if (!fp) {
 			ksft_perror("Cannot open results file");
 
 			return -1;
 		}
-		fprintf(fp, "Pid: %d \t llc_value: %lu\n", bm_pid, llc_value);
+		fprintf(fp, "Pid: %d \t llc_value: %llu\n", bm_pid, llc_value);
 		fclose(fp);
 	}
 
@@ -182,7 +178,7 @@ static int print_results_cache(const char *filename, int bm_pid,
  */
 static int perf_event_measure(const char *filename, int bm_pid)
 {
-	unsigned long llc_perf_miss = 0;
+	__u64 llc_perf_miss = 0;
 	int ret;
 
 	ret = get_llc_perf(&llc_perf_miss);
@@ -285,11 +281,10 @@ int cat_val(struct resctrl_val_param *param, size_t span)
  * @cache_span:		Cache span
  * @lines:		@cache_span in lines or bytes
  */
-void show_cache_info(int no_of_bits, unsigned long avg_llc_val,
-		     size_t cache_span, bool lines)
+void show_cache_info(int no_of_bits, __u64 avg_llc_val, size_t cache_span, bool lines)
 {
 	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("Average LLC val: %llu\n", avg_llc_val);
 	ksft_print_msg("Cache span (%s): %zu\n", lines ? "lines" : "bytes",
 		       cache_span);
 }

tools/testing/selftests/resctrl/cat_test.c

@@ -41,12 +41,12 @@ 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,
+static int show_results_info(__u64 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;
+	__u64 avg_llc_val = 0;
 	float diff_percent;
 	int ret;
 
@@ -68,8 +68,8 @@ static int show_results_info(unsigned long sum_llc_val, int no_of_bits,
 static int check_results(struct resctrl_val_param *param, size_t span)
 {
 	char *token_array[8], temp[512];
-	unsigned long sum_llc_perf_miss = 0;
 	int runs = 0, no_of_bits = 0;
+	__u64 sum_llc_perf_miss = 0;
 	FILE *fp;
 
 	ksft_print_msg("Checking for pass/fail\n");
@@ -93,7 +93,7 @@ static int check_results(struct resctrl_val_param *param, size_t span)
 		 * setup transition phase.
 		 */
 		if (runs > 0)
-			sum_llc_perf_miss += strtoul(token_array[3], NULL, 0);
+			sum_llc_perf_miss += strtoull(token_array[3], NULL, 0);
 		runs++;
 	}
 

tools/testing/selftests/resctrl/resctrl.h

@@ -113,8 +113,7 @@ 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);
-void show_cache_info(int no_of_bits, unsigned long avg_llc_val,
-		     size_t cache_span, bool lines);
+void show_cache_info(int no_of_bits, __u64 avg_llc_val, size_t cache_span, bool lines);
 
 /*
  * cache_portion_size - Calculate the size of a cache portion