Test name is passed to fill_buf functions so that they can loop around buffer only once. This is required for CAT test case.
To loop around buffer only once, caller doesn't need to let fill_buf know which test case it is. Instead, pass a boolean argument 'once' which makes fill_buf more generic.
As run_benchmark() no longer needs to pass the test name to run_fill_buf(), a few test running functions can be simplified to not write the test name into the default benchmark_cmd. The has_ben argument can also be removed now from those test running functions.
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 --- tools/testing/selftests/resctrl/cache.c | 3 +-- tools/testing/selftests/resctrl/fill_buf.c | 20 +++++++++---------- tools/testing/selftests/resctrl/resctrl.h | 2 +- .../testing/selftests/resctrl/resctrl_tests.c | 14 +++++-------- tools/testing/selftests/resctrl/resctrlfs.c | 11 +++++++--- 5 files changed, 24 insertions(+), 26 deletions(-)
diff --git a/tools/testing/selftests/resctrl/cache.c b/tools/testing/selftests/resctrl/cache.c index 63b551c44f1d..8ae9ac150fd3 100644 --- a/tools/testing/selftests/resctrl/cache.c +++ b/tools/testing/selftests/resctrl/cache.c @@ -247,8 +247,7 @@ int cat_val(struct resctrl_val_param *param) if (ret) break;
- if (run_fill_buf(param->span, memflush, operation, - resctrl_val)) { + if (run_fill_buf(param->span, memflush, operation, true)) { fprintf(stderr, "Error-running fill buffer\n"); ret = -1; goto pe_close; diff --git a/tools/testing/selftests/resctrl/fill_buf.c b/tools/testing/selftests/resctrl/fill_buf.c index 5f16c4f5dfbf..0d425f26583a 100644 --- a/tools/testing/selftests/resctrl/fill_buf.c +++ b/tools/testing/selftests/resctrl/fill_buf.c @@ -101,15 +101,14 @@ static void fill_one_span_write(unsigned char *buf, size_t buf_size) } }
-static int fill_cache_read(unsigned char *buf, size_t buf_size, - char *resctrl_val) +static int fill_cache_read(unsigned char *buf, size_t buf_size, bool once) { int ret = 0; FILE *fp;
while (1) { ret = fill_one_span_read(buf, buf_size); - if (!strncmp(resctrl_val, CAT_STR, sizeof(CAT_STR))) + if (once) break; }
@@ -125,19 +124,18 @@ static int fill_cache_read(unsigned char *buf, size_t buf_size, return 0; }
-static int fill_cache_write(unsigned char *buf, size_t buf_size, - char *resctrl_val) +static int fill_cache_write(unsigned char *buf, size_t buf_size, bool once) { while (1) { fill_one_span_write(buf, buf_size); - if (!strncmp(resctrl_val, CAT_STR, sizeof(CAT_STR))) + if (once) break; }
return 0; }
-static int fill_cache(size_t buf_size, int memflush, int op, char *resctrl_val) +static int fill_cache(size_t buf_size, int memflush, int op, bool once) { unsigned char *buf; int ret; @@ -151,9 +149,9 @@ static int fill_cache(size_t buf_size, int memflush, int op, char *resctrl_val) mem_flush(buf, buf_size);
if (op == 0) - ret = fill_cache_read(buf, buf_size, resctrl_val); + ret = fill_cache_read(buf, buf_size, once); else - ret = fill_cache_write(buf, buf_size, resctrl_val); + ret = fill_cache_write(buf, buf_size, once);
free(buf);
@@ -166,12 +164,12 @@ static int fill_cache(size_t buf_size, int memflush, int op, char *resctrl_val) return 0; }
-int run_fill_buf(size_t span, int memflush, int op, char *resctrl_val) +int run_fill_buf(size_t span, int memflush, int op, bool once) { size_t cache_size = span; int ret;
- ret = fill_cache(cache_size, memflush, op, resctrl_val); + ret = fill_cache(cache_size, memflush, op, once); 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 3054cc4ef0e3..645ad407bd8d 100644 --- a/tools/testing/selftests/resctrl/resctrl.h +++ b/tools/testing/selftests/resctrl/resctrl.h @@ -97,7 +97,7 @@ 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(size_t span, int memflush, int op, char *resctrl_val); +int run_fill_buf(size_t span, int memflush, int op, bool once); int resctrl_val(char **benchmark_cmd, struct resctrl_val_param *param); int mbm_bw_change(size_t 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 125ed0ca11e3..d511daeb6851 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, size_t span, +static void run_mbm_test(char **benchmark_cmd, size_t span, int cpu_no, char *bw_report) { int res; @@ -88,8 +88,6 @@ static void run_mbm_test(bool has_ben, char **benchmark_cmd, size_t span, goto umount; }
- if (!has_ben) - 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) @@ -123,7 +121,7 @@ static void run_mba_test(char **benchmark_cmd, int cpu_no, char *bw_report) umount_resctrlfs(); }
-static void run_cmt_test(bool has_ben, char **benchmark_cmd, int cpu_no) +static void run_cmt_test(char **benchmark_cmd, int cpu_no) { int res;
@@ -140,8 +138,6 @@ static void run_cmt_test(bool has_ben, char **benchmark_cmd, int cpu_no) goto umount; }
- if (!has_ben) - 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) @@ -274,7 +270,7 @@ int main(int argc, char **argv) sprintf(benchmark_cmd[1], "%zu", span); strcpy(benchmark_cmd[2], "1"); strcpy(benchmark_cmd[3], "0"); - strcpy(benchmark_cmd[4], ""); + strcpy(benchmark_cmd[4], "false"); benchmark_cmd[5] = NULL; }
@@ -292,13 +288,13 @@ int main(int argc, char **argv) ksft_set_plan(tests ? : 4);
if (mbm_test) - run_mbm_test(has_ben, benchmark_cmd, span, cpu_no, bw_report); + run_mbm_test(benchmark_cmd, span, cpu_no, bw_report);
if (mba_test) run_mba_test(benchmark_cmd, cpu_no, bw_report);
if (cmt_test) - run_cmt_test(has_ben, benchmark_cmd, cpu_no); + run_cmt_test(benchmark_cmd, cpu_no);
if (cat_test) run_cat_test(cpu_no, no_of_bits); diff --git a/tools/testing/selftests/resctrl/resctrlfs.c b/tools/testing/selftests/resctrl/resctrlfs.c index 8a66445079f8..bd36ee206602 100644 --- a/tools/testing/selftests/resctrl/resctrlfs.c +++ b/tools/testing/selftests/resctrl/resctrlfs.c @@ -304,8 +304,8 @@ void run_benchmark(int signum, siginfo_t *info, void *ucontext) { int operation, ret, memflush; char **benchmark_cmd; - char resctrl_val[64]; size_t span; + bool once; FILE *fp;
benchmark_cmd = info->si_ptr; @@ -323,9 +323,14 @@ void run_benchmark(int signum, siginfo_t *info, void *ucontext) span = strtoul(benchmark_cmd[1], NULL, 10); memflush = atoi(benchmark_cmd[2]); operation = atoi(benchmark_cmd[3]); - sprintf(resctrl_val, "%s", benchmark_cmd[4]); + if (!strcmp(benchmark_cmd[4], "true")) + once = true; + else if (!strcmp(benchmark_cmd[4], "false")) + once = false; + else + PARENT_EXIT("Invalid once parameter");
- if (run_fill_buf(span, memflush, operation, resctrl_val)) + if (run_fill_buf(span, memflush, operation, once)) fprintf(stderr, "Error in running fill buffer\n"); } else { /* Execute specified benchmark */