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Date: Fri, 31 May 2024 16:11:31 +0300
From: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
To: linux-kselftest@...r.kernel.org,
Reinette Chatre <reinette.chatre@...el.com>,
Shuah Khan <shuah@...nel.org>,
Babu Moger <babu.moger@....com>,
Maciej Wieczór-Retman <maciej.wieczor-retman@...el.com>
Cc: linux-kernel@...r.kernel.org,
Fenghua Yu <fenghua.yu@...el.com>,
Shuah Khan <skhan@...uxfoundation.org>,
Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
Subject: [PATCH v5 05/16] selftests/resctrl: Use correct type for pids
A few functions receive PIDs through int arguments. PIDs variables
should be of type pid_t, not int.
Convert pid arguments from int to pid_t.
Before printing PID, match the type to %d by casting to int which is
enough for Linux (standard would allow using a longer integer type but
generalizing for that would complicate the code unnecessarily, the
selftest code does not need to be portable).
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
---
v5:
- Cast to int before printing to match with %d.
---
tools/testing/selftests/resctrl/cache.c | 10 +++++-----
tools/testing/selftests/resctrl/resctrl.h | 4 ++--
tools/testing/selftests/resctrl/resctrl_val.c | 8 ++++----
tools/testing/selftests/resctrl/resctrlfs.c | 2 +-
4 files changed, 12 insertions(+), 12 deletions(-)
diff --git a/tools/testing/selftests/resctrl/cache.c b/tools/testing/selftests/resctrl/cache.c
index 1b339d6bbff1..1ff1104e6575 100644
--- a/tools/testing/selftests/resctrl/cache.c
+++ b/tools/testing/selftests/resctrl/cache.c
@@ -101,12 +101,12 @@ 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, __u64 llc_value)
+static int print_results_cache(const char *filename, pid_t bm_pid, __u64 llc_value)
{
FILE *fp;
if (strcmp(filename, "stdio") == 0 || strcmp(filename, "stderr") == 0) {
- printf("Pid: %d \t LLC_value: %llu\n", bm_pid, llc_value);
+ printf("Pid: %d \t LLC_value: %llu\n", (int)bm_pid, llc_value);
} else {
fp = fopen(filename, "a");
if (!fp) {
@@ -114,7 +114,7 @@ static int print_results_cache(const char *filename, int bm_pid, __u64 llc_value
return -1;
}
- fprintf(fp, "Pid: %d \t llc_value: %llu\n", bm_pid, llc_value);
+ fprintf(fp, "Pid: %d \t llc_value: %llu\n", (int)bm_pid, llc_value);
fclose(fp);
}
@@ -133,7 +133,7 @@ static int print_results_cache(const char *filename, int bm_pid, __u64 llc_value
* Return: =0 on success. <0 on failure.
*/
int perf_event_measure(int pe_fd, struct perf_event_read *pe_read,
- const char *filename, int bm_pid)
+ const char *filename, pid_t bm_pid)
{
int ret;
@@ -161,7 +161,7 @@ int perf_event_measure(int pe_fd, struct perf_event_read *pe_read,
*
* Return: =0 on success. <0 on failure.
*/
-int measure_llc_resctrl(const char *filename, int bm_pid)
+int measure_llc_resctrl(const char *filename, pid_t bm_pid)
{
unsigned long llc_occu_resc = 0;
int ret;
diff --git a/tools/testing/selftests/resctrl/resctrl.h b/tools/testing/selftests/resctrl/resctrl.h
index 00d51fa7531c..e6f221236c79 100644
--- a/tools/testing/selftests/resctrl/resctrl.h
+++ b/tools/testing/selftests/resctrl/resctrl.h
@@ -174,8 +174,8 @@ void perf_event_initialize_read_format(struct perf_event_read *pe_read);
int perf_open(struct perf_event_attr *pea, pid_t pid, int cpu_no);
int perf_event_reset_enable(int pe_fd);
int perf_event_measure(int pe_fd, struct perf_event_read *pe_read,
- const char *filename, int bm_pid);
-int measure_llc_resctrl(const char *filename, int bm_pid);
+ const char *filename, pid_t bm_pid);
+int measure_llc_resctrl(const char *filename, pid_t bm_pid);
void show_cache_info(int no_of_bits, __u64 avg_llc_val, size_t cache_span, bool lines);
/*
diff --git a/tools/testing/selftests/resctrl/resctrl_val.c b/tools/testing/selftests/resctrl/resctrl_val.c
index e1ae59063c51..d6f6db77d480 100644
--- a/tools/testing/selftests/resctrl/resctrl_val.c
+++ b/tools/testing/selftests/resctrl/resctrl_val.c
@@ -572,14 +572,14 @@ void signal_handler_unregister(void)
*
* Return: 0 on success, < 0 on error.
*/
-static int print_results_bw(char *filename, int bm_pid, float bw_imc,
+static int print_results_bw(char *filename, pid_t bm_pid, float bw_imc,
unsigned long bw_resc)
{
unsigned long diff = fabs(bw_imc - bw_resc);
FILE *fp;
if (strcmp(filename, "stdio") == 0 || strcmp(filename, "stderr") == 0) {
- printf("Pid: %d \t Mem_BW_iMC: %f \t ", bm_pid, bw_imc);
+ printf("Pid: %d \t Mem_BW_iMC: %f \t ", (int)bm_pid, bw_imc);
printf("Mem_BW_resc: %lu \t Difference: %lu\n", bw_resc, diff);
} else {
fp = fopen(filename, "a");
@@ -589,7 +589,7 @@ static int print_results_bw(char *filename, int bm_pid, float bw_imc,
return -1;
}
if (fprintf(fp, "Pid: %d \t Mem_BW_iMC: %f \t Mem_BW_resc: %lu \t Difference: %lu\n",
- bm_pid, bw_imc, bw_resc, diff) <= 0) {
+ (int)bm_pid, bw_imc, bw_resc, diff) <= 0) {
ksft_print_msg("Could not log results\n");
fclose(fp);
@@ -832,7 +832,7 @@ int resctrl_val(const struct resctrl_test *test,
PARENT_EXIT();
}
- ksft_print_msg("Benchmark PID: %d\n", bm_pid);
+ ksft_print_msg("Benchmark PID: %d\n", (int)bm_pid);
/*
* The cast removes constness but nothing mutates benchmark_cmd within
diff --git a/tools/testing/selftests/resctrl/resctrlfs.c b/tools/testing/selftests/resctrl/resctrlfs.c
index 9b86f826a40c..917d677adbba 100644
--- a/tools/testing/selftests/resctrl/resctrlfs.c
+++ b/tools/testing/selftests/resctrl/resctrlfs.c
@@ -508,7 +508,7 @@ static int write_pid_to_tasks(char *tasks, pid_t pid)
return -1;
}
- if (fprintf(fp, "%d\n", pid) < 0) {
+ if (fprintf(fp, "%d\n", (int)pid) < 0) {
ksft_print_msg("Failed to write pid to tasks file\n");
fclose(fp);
--
2.39.2
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