[PATCH v2 09/24] selftests/resctrl: Remove "malloc_and_init_memory" param from run_fill_buf()
From: Ilpo Järvinen
Date: Tue Apr 18 2023 - 07:46:41 EST
run_fill_buf()'s malloc_and_init_memory parameter is always 1. There's
also duplicated memory init code for malloc_and_init_memory == 0 case
in fill_buf() which is unused.
Remove the malloc_and_init_memory parameter and the duplicated mem init
code.
While at it, fix also a typo in run_fill_buf() prototype's argument.
Co-developed-by: Fenghua Yu <fenghua.yu@xxxxxxxxx>
Signed-off-by: Fenghua Yu <fenghua.yu@xxxxxxxxx>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@xxxxxxxxxxxxxxx>
---
tools/testing/selftests/resctrl/cache.c | 6 ++---
tools/testing/selftests/resctrl/fill_buf.c | 27 +++----------------
tools/testing/selftests/resctrl/resctrl.h | 3 +--
.../testing/selftests/resctrl/resctrl_tests.c | 13 +++++----
tools/testing/selftests/resctrl/resctrlfs.c | 12 ++++-----
5 files changed, 19 insertions(+), 42 deletions(-)
diff --git a/tools/testing/selftests/resctrl/cache.c b/tools/testing/selftests/resctrl/cache.c
index 11105ba30eff..ed5ec8a78c30 100644
--- a/tools/testing/selftests/resctrl/cache.c
+++ b/tools/testing/selftests/resctrl/cache.c
@@ -212,7 +212,7 @@ int measure_cache_vals(struct resctrl_val_param *param, int bm_pid)
*/
int cat_val(struct resctrl_val_param *param)
{
- int malloc_and_init_memory = 1, memflush = 1, operation = 0, ret = 0;
+ int memflush = 1, operation = 0, ret = 0;
char *resctrl_val = param->resctrl_val;
pid_t bm_pid;
@@ -249,8 +249,8 @@ int cat_val(struct resctrl_val_param *param)
if (ret)
break;
- if (run_fill_buf(param->span, malloc_and_init_memory,
- memflush, operation, resctrl_val)) {
+ if (run_fill_buf(param->span, memflush, operation,
+ resctrl_val)) {
fprintf(stderr, "Error-running fill buffer\n");
ret = -1;
break;
diff --git a/tools/testing/selftests/resctrl/fill_buf.c b/tools/testing/selftests/resctrl/fill_buf.c
index 341cc93ca84c..5cdb421a2f6c 100644
--- a/tools/testing/selftests/resctrl/fill_buf.c
+++ b/tools/testing/selftests/resctrl/fill_buf.c
@@ -139,35 +139,18 @@ static int fill_cache_write(unsigned char *start_ptr, unsigned char *end_ptr,
}
static int
-fill_cache(unsigned long long buf_size, int malloc_and_init, int memflush,
- int op, char *resctrl_val)
+fill_cache(unsigned long long buf_size, int memflush, int op, char *resctrl_val)
{
unsigned char *start_ptr, *end_ptr;
- unsigned long long i;
int ret;
- if (malloc_and_init)
- start_ptr = malloc_and_init_memory(buf_size);
- else
- start_ptr = malloc(buf_size);
-
+ start_ptr = malloc_and_init_memory(buf_size);
if (!start_ptr)
return -1;
startptr = start_ptr;
end_ptr = start_ptr + buf_size;
- /*
- * It's better to touch the memory once to avoid any compiler
- * optimizations
- */
- if (!malloc_and_init) {
- for (i = 0; i < buf_size; i++)
- *start_ptr++ = (unsigned char)rand();
- }
-
- start_ptr = startptr;
-
/* Flush the memory before using to avoid "cache hot pages" effect */
if (memflush)
mem_flush(start_ptr, buf_size);
@@ -187,14 +170,12 @@ fill_cache(unsigned long long buf_size, int malloc_and_init, int memflush,
return 0;
}
-int run_fill_buf(unsigned long span, int malloc_and_init_memory,
- int memflush, int op, char *resctrl_val)
+int run_fill_buf(unsigned long span, int memflush, int op, char *resctrl_val)
{
unsigned long long cache_size = span;
int ret;
- ret = fill_cache(cache_size, malloc_and_init_memory, memflush, op,
- resctrl_val);
+ ret = fill_cache(cache_size, memflush, op, resctrl_val);
if (ret) {
printf("\n Error in fill cache\n");
return -1;
diff --git a/tools/testing/selftests/resctrl/resctrl.h b/tools/testing/selftests/resctrl/resctrl.h
index 4fd2eaf641e0..574adac8932d 100644
--- a/tools/testing/selftests/resctrl/resctrl.h
+++ b/tools/testing/selftests/resctrl/resctrl.h
@@ -95,8 +95,7 @@ int write_bm_pid_to_resctrl(pid_t bm_pid, char *ctrlgrp, char *mongrp,
char *resctrl_val);
int perf_event_open(struct perf_event_attr *hw_event, pid_t pid, int cpu,
int group_fd, unsigned long flags);
-int run_fill_buf(unsigned long span, int malloc_and_init_memory, int memflush,
- int op, char *resctrl_va);
+int run_fill_buf(unsigned long span, int memflush, int op, char *resctrl_val);
int resctrl_val(char **benchmark_cmd, struct resctrl_val_param *param);
int mbm_bw_change(unsigned long span, int cpu_no, char *bw_report, char **benchmark_cmd);
void tests_cleanup(void);
diff --git a/tools/testing/selftests/resctrl/resctrl_tests.c b/tools/testing/selftests/resctrl/resctrl_tests.c
index 3c8ec68eb507..ef2977b5ecd4 100644
--- a/tools/testing/selftests/resctrl/resctrl_tests.c
+++ b/tools/testing/selftests/resctrl/resctrl_tests.c
@@ -89,7 +89,7 @@ static void run_mbm_test(bool has_ben, char **benchmark_cmd, unsigned long span,
}
if (!has_ben)
- sprintf(benchmark_cmd[5], "%s", MBA_STR);
+ sprintf(benchmark_cmd[4], "%s", MBA_STR);
res = mbm_bw_change(span, cpu_no, bw_report, benchmark_cmd);
ksft_test_result(!res, "MBM: bw change\n");
if ((get_vendor() == ARCH_INTEL) && res)
@@ -142,7 +142,7 @@ static void run_cmt_test(bool has_ben, char **benchmark_cmd, int cpu_no)
}
if (!has_ben)
- sprintf(benchmark_cmd[5], "%s", CMT_STR);
+ sprintf(benchmark_cmd[4], "%s", CMT_STR);
res = cmt_resctrl_val(cpu_no, 5, benchmark_cmd);
ksft_test_result(!res, "CMT: test\n");
if ((get_vendor() == ARCH_INTEL) && res)
@@ -269,16 +269,15 @@ int main(int argc, char **argv)
benchmark_cmd[ben_count] = NULL;
} else {
/* If no benchmark is given by "-b" argument, use fill_buf. */
- for (i = 0; i < 6; i++)
+ for (i = 0; i < 5; i++)
benchmark_cmd[i] = benchmark_cmd_area[i];
strcpy(benchmark_cmd[0], "fill_buf");
sprintf(benchmark_cmd[1], "%lu", span);
strcpy(benchmark_cmd[2], "1");
- strcpy(benchmark_cmd[3], "1");
- strcpy(benchmark_cmd[4], "0");
- strcpy(benchmark_cmd[5], "");
- benchmark_cmd[6] = NULL;
+ strcpy(benchmark_cmd[3], "0");
+ strcpy(benchmark_cmd[4], "");
+ benchmark_cmd[5] = NULL;
}
sprintf(bw_report, "reads");
diff --git a/tools/testing/selftests/resctrl/resctrlfs.c b/tools/testing/selftests/resctrl/resctrlfs.c
index 09e0a69c81c4..79e030065da8 100644
--- a/tools/testing/selftests/resctrl/resctrlfs.c
+++ b/tools/testing/selftests/resctrl/resctrlfs.c
@@ -295,7 +295,7 @@ int taskset_benchmark(pid_t bm_pid, int cpu_no)
*/
void run_benchmark(int signum, siginfo_t *info, void *ucontext)
{
- int operation, ret, malloc_and_init_memory, memflush;
+ int operation, ret, memflush;
unsigned long span;
char **benchmark_cmd;
char resctrl_val[64];
@@ -314,13 +314,11 @@ void run_benchmark(int signum, siginfo_t *info, void *ucontext)
if (strcmp(benchmark_cmd[0], "fill_buf") == 0) {
/* Execute default fill_buf benchmark */
span = strtoul(benchmark_cmd[1], NULL, 10);
- malloc_and_init_memory = atoi(benchmark_cmd[2]);
- memflush = atoi(benchmark_cmd[3]);
- operation = atoi(benchmark_cmd[4]);
- sprintf(resctrl_val, "%s", benchmark_cmd[5]);
+ memflush = atoi(benchmark_cmd[2]);
+ operation = atoi(benchmark_cmd[3]);
+ sprintf(resctrl_val, "%s", benchmark_cmd[4]);
- if (run_fill_buf(span, malloc_and_init_memory, memflush,
- operation, resctrl_val))
+ if (run_fill_buf(span, memflush, operation, resctrl_val))
fprintf(stderr, "Error in running fill buffer\n");
} else {
/* Execute specified benchmark */
--
2.30.2