diff mbox series

[v2,05/24] selftests/resctrl: Make span unsigned long everywhere

Message ID 20230418114506.46788-6-ilpo.jarvinen@linux.intel.com
State New
Headers show
Series selftests/resctrl: Fixes, cleanups, and rewritten CAT test | expand

Commit Message

Ilpo Järvinen April 18, 2023, 11:44 a.m. UTC 
fill_buf(), show_bw_info(), and resctrl_val_param.span define span as
unsigned long.

Consistently use unsigned long elsewhere too for span parameters.

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>
---
 tools/testing/selftests/resctrl/mbm_test.c      |  8 ++++----
 tools/testing/selftests/resctrl/resctrl.h       |  2 +-
 tools/testing/selftests/resctrl/resctrl_tests.c | 11 ++++++-----
 3 files changed, 11 insertions(+), 10 deletions(-)

Comments

Reinette Chatre April 22, 2023, 12:12 a.m. UTC | #1 
Hi Ilpo,

On 4/18/2023 4:44 AM, Ilpo Järvinen wrote:
> fill_buf(), show_bw_info(), and resctrl_val_param.span define span as
> unsigned long.

There is no fill_buf() in the code and show_bw_info() does
not define span as unsigned long (it is even the first function
changed in this patch).

> 
> Consistently use unsigned long elsewhere too for span parameters.

Is unsigned long the right type to use? Tracing through all the
indirections I do not see how making all usages unsigned long
achieves consistency ... have you considered size_t?

Reinette
Ilpo Järvinen April 24, 2023, 3:05 p.m. UTC | #2 
On Fri, 21 Apr 2023, Reinette Chatre wrote:
> On 4/18/2023 4:44 AM, Ilpo Järvinen wrote:
> > fill_buf(), show_bw_info(), and resctrl_val_param.span define span as
> > unsigned long.
> 
> There is no fill_buf() in the code and show_bw_info() does
> not define span as unsigned long (it is even the first function
> changed in this patch).

Shuffling a large number of patches around seems detrimental for the 
quality of the commit messages no matter how hard I try to maintain them 
up to date. Thanks for noticing this.

> > Consistently use unsigned long elsewhere too for span parameters.
> 
> Is unsigned long the right type to use? Tracing through all the
> indirections I do not see how making all usages unsigned long
> achieves consistency ... have you considered size_t?

I'll change to size_t as it refers to the size of the memory block.
diff mbox series

Patch

diff --git a/tools/testing/selftests/resctrl/mbm_test.c b/tools/testing/selftests/resctrl/mbm_test.c
index 24326cb7bc21..3c389ccfea41 100644
--- a/tools/testing/selftests/resctrl/mbm_test.c
+++ b/tools/testing/selftests/resctrl/mbm_test.c
@@ -15,7 +15,7 @@ 
 #define NUM_OF_RUNS		5
 
 static int
-show_bw_info(unsigned long *bw_imc, unsigned long *bw_resc, int span)
+show_bw_info(unsigned long *bw_imc, unsigned long *bw_resc, unsigned long span)
 {
 	unsigned long avg_bw_imc = 0, avg_bw_resc = 0;
 	unsigned long sum_bw_imc = 0, sum_bw_resc = 0;
@@ -40,14 +40,14 @@  show_bw_info(unsigned long *bw_imc, unsigned long *bw_resc, int span)
 	ksft_print_msg("%s Check MBM diff within %d%%\n",
 		       ret ? "Fail:" : "Pass:", MAX_DIFF_PERCENT);
 	ksft_print_msg("avg_diff_per: %d%%\n", avg_diff_per);
-	ksft_print_msg("Span (MB): %d\n", span);
+	ksft_print_msg("Span (MB): %lu\n", span);
 	ksft_print_msg("avg_bw_imc: %lu\n", avg_bw_imc);
 	ksft_print_msg("avg_bw_resc: %lu\n", avg_bw_resc);
 
 	return ret;
 }
 
-static int check_results(int span)
+static int check_results(unsigned long span)
 {
 	unsigned long bw_imc[NUM_OF_RUNS], bw_resc[NUM_OF_RUNS];
 	char temp[1024], *token_array[8];
@@ -115,7 +115,7 @@  void mbm_test_cleanup(void)
 	remove(RESULT_FILE_NAME);
 }
 
-int mbm_bw_change(int span, int cpu_no, char *bw_report, char **benchmark_cmd)
+int mbm_bw_change(unsigned long span, int cpu_no, char *bw_report, char **benchmark_cmd)
 {
 	struct resctrl_val_param param = {
 		.resctrl_val	= MBM_STR,
diff --git a/tools/testing/selftests/resctrl/resctrl.h b/tools/testing/selftests/resctrl/resctrl.h
index c737eb47eacc..fe54c2b4f014 100644
--- a/tools/testing/selftests/resctrl/resctrl.h
+++ b/tools/testing/selftests/resctrl/resctrl.h
@@ -99,7 +99,7 @@  int perf_event_open(struct perf_event_attr *hw_event, pid_t pid, int cpu,
 int run_fill_buf(unsigned long span, int malloc_and_init_memory, int memflush,
 		 int op, char *resctrl_va);
 int resctrl_val(char **benchmark_cmd, struct resctrl_val_param *param);
-int mbm_bw_change(int span, int cpu_no, char *bw_report, char **benchmark_cmd);
+int mbm_bw_change(unsigned long span, int cpu_no, char *bw_report, char **benchmark_cmd);
 void tests_cleanup(void);
 void mbm_test_cleanup(void);
 int mba_schemata_change(int cpu_no, char *bw_report, char **benchmark_cmd);
diff --git a/tools/testing/selftests/resctrl/resctrl_tests.c b/tools/testing/selftests/resctrl/resctrl_tests.c
index f3303459136d..6bc0eda25e5d 100644
--- a/tools/testing/selftests/resctrl/resctrl_tests.c
+++ b/tools/testing/selftests/resctrl/resctrl_tests.c
@@ -70,7 +70,7 @@  void tests_cleanup(void)
 	cat_test_cleanup();
 }
 
-static void run_mbm_test(bool has_ben, char **benchmark_cmd, int span,
+static void run_mbm_test(bool has_ben, char **benchmark_cmd, unsigned long span,
 			 int cpu_no, char *bw_report)
 {
 	int res;
@@ -99,7 +99,7 @@  static void run_mbm_test(bool has_ben, char **benchmark_cmd, int span,
 	umount_resctrlfs();
 }
 
-static void run_mba_test(bool has_ben, char **benchmark_cmd, int span,
+static void run_mba_test(bool has_ben, char **benchmark_cmd, unsigned long span,
 			 int cpu_no, char *bw_report)
 {
 	int res;
@@ -118,7 +118,7 @@  static void run_mba_test(bool has_ben, char **benchmark_cmd, int span,
 	}
 
 	if (!has_ben)
-		sprintf(benchmark_cmd[1], "%d", span);
+		sprintf(benchmark_cmd[1], "%lu", span);
 	res = mba_schemata_change(cpu_no, bw_report, benchmark_cmd);
 	ksft_test_result(!res, "MBA: schemata change\n");
 
@@ -182,9 +182,10 @@  static void run_cat_test(int cpu_no, int no_of_bits)
 int main(int argc, char **argv)
 {
 	bool has_ben = false, mbm_test = true, mba_test = true, cmt_test = true;
-	int c, cpu_no = 1, span = 250, argc_new = argc, i, no_of_bits = 0;
 	char *benchmark_cmd[BENCHMARK_ARGS], bw_report[64], bm_type[64];
 	char benchmark_cmd_area[BENCHMARK_ARGS][BENCHMARK_ARG_SIZE];
+	int c, cpu_no = 1, argc_new = argc, i, no_of_bits = 0;
+	unsigned long span = 250;
 	int ben_ind, ben_count, tests = 0;
 	bool cat_test = true;
 
@@ -274,7 +275,7 @@  int main(int argc, char **argv)
 			benchmark_cmd[i] = benchmark_cmd_area[i];
 
 		strcpy(benchmark_cmd[0], "fill_buf");
-		sprintf(benchmark_cmd[1], "%d", span);
+		sprintf(benchmark_cmd[1], "%lu", span);
 		strcpy(benchmark_cmd[2], "1");
 		strcpy(benchmark_cmd[3], "1");
 		strcpy(benchmark_cmd[4], "0");