diff options
Diffstat (limited to 'tools/testing/selftests/resctrl/resctrlfs.c')
-rw-r--r-- | tools/testing/selftests/resctrl/resctrlfs.c | 134 |
1 files changed, 79 insertions, 55 deletions
diff --git a/tools/testing/selftests/resctrl/resctrlfs.c b/tools/testing/selftests/resctrl/resctrlfs.c index 19c0ec4045a4..5f5a166ade60 100644 --- a/tools/testing/selftests/resctrl/resctrlfs.c +++ b/tools/testing/selftests/resctrl/resctrlfs.c @@ -10,8 +10,6 @@ */ #include "resctrl.h" -int tests_run; - static int find_resctrl_mount(char *buffer) { FILE *mounts; @@ -49,8 +47,6 @@ static int find_resctrl_mount(char *buffer) return -ENOENT; } -char cbm_mask[256]; - /* * remount_resctrlfs - Remount resctrl FS at /sys/fs/resctrl * @mum_resctrlfs: Should the resctrl FS be remounted? @@ -70,28 +66,25 @@ int remount_resctrlfs(bool mum_resctrlfs) if (ret) strcpy(mountpoint, RESCTRL_PATH); - if (!ret && mum_resctrlfs && umount(mountpoint)) { - printf("not ok unmounting \"%s\"\n", mountpoint); - perror("# umount"); - tests_run++; - } + if (!ret && mum_resctrlfs && umount(mountpoint)) + ksft_print_msg("Fail: unmounting \"%s\"\n", mountpoint); if (!ret && !mum_resctrlfs) return 0; + ksft_print_msg("Mounting resctrl to \"%s\"\n", RESCTRL_PATH); ret = mount("resctrl", RESCTRL_PATH, "resctrl", 0, NULL); - printf("%sok mounting resctrl to \"%s\"\n", ret ? "not " : "", - RESCTRL_PATH); if (ret) perror("# mount"); - tests_run++; - return ret; } int umount_resctrlfs(void) { + if (find_resctrl_mount(NULL)) + return 0; + if (umount(RESCTRL_PATH)) { perror("# Unable to umount resctrl"); @@ -205,16 +198,18 @@ int get_cache_size(int cpu_no, char *cache_type, unsigned long *cache_size) /* * get_cbm_mask - Get cbm mask for given cache * @cache_type: Cache level L2/L3 - * - * Mask is stored in cbm_mask which is global variable. + * @cbm_mask: cbm_mask returned as a string * * Return: = 0 on success, < 0 on failure. */ -int get_cbm_mask(char *cache_type) +int get_cbm_mask(char *cache_type, char *cbm_mask) { char cbm_mask_path[1024]; FILE *fp; + if (!cbm_mask) + return -1; + sprintf(cbm_mask_path, "%s/%s/cbm_mask", CBM_MASK_PATH, cache_type); fp = fopen(cbm_mask_path, "r"); @@ -268,7 +263,7 @@ int get_core_sibling(int cpu_no) while (token) { sibling_cpu_no = atoi(token); /* Skipping core 0 as we don't want to run test on core 0 */ - if (sibling_cpu_no != 0) + if (sibling_cpu_no != 0 && sibling_cpu_no != cpu_no) break; token = strtok(NULL, "-,"); } @@ -334,7 +329,7 @@ void run_benchmark(int signum, siginfo_t *info, void *ucontext) operation = atoi(benchmark_cmd[4]); sprintf(resctrl_val, "%s", benchmark_cmd[5]); - if (strcmp(resctrl_val, "cqm") != 0) + if (strncmp(resctrl_val, CMT_STR, sizeof(CMT_STR))) buffer_span = span * MB; else buffer_span = span; @@ -458,9 +453,9 @@ int write_bm_pid_to_resctrl(pid_t bm_pid, char *ctrlgrp, char *mongrp, if (ret) goto out; - /* Create mon grp and write pid into it for "mbm" and "cqm" test */ - if ((strcmp(resctrl_val, "cqm") == 0) || - (strcmp(resctrl_val, "mbm") == 0)) { + /* Create mon grp and write pid into it for "mbm" and "cmt" test */ + if (!strncmp(resctrl_val, CMT_STR, sizeof(CMT_STR)) || + !strncmp(resctrl_val, MBM_STR, sizeof(MBM_STR))) { if (strlen(mongrp)) { sprintf(monitorgroup_p, "%s/mon_groups", controlgroup); sprintf(monitorgroup, "%s/%s", monitorgroup_p, mongrp); @@ -477,13 +472,10 @@ int write_bm_pid_to_resctrl(pid_t bm_pid, char *ctrlgrp, char *mongrp, } out: - printf("%sok writing benchmark parameters to resctrl FS\n", - ret ? "not " : ""); + ksft_print_msg("Writing benchmark parameters to resctrl FS\n"); if (ret) perror("# writing to resctrlfs"); - tests_run++; - return ret; } @@ -505,13 +497,13 @@ int write_schemata(char *ctrlgrp, char *schemata, int cpu_no, char *resctrl_val) int resource_id, ret = 0; FILE *fp; - if ((strcmp(resctrl_val, "mba") != 0) && - (strcmp(resctrl_val, "cat") != 0) && - (strcmp(resctrl_val, "cqm") != 0)) + if (strncmp(resctrl_val, MBA_STR, sizeof(MBA_STR)) && + strncmp(resctrl_val, CAT_STR, sizeof(CAT_STR)) && + strncmp(resctrl_val, CMT_STR, sizeof(CMT_STR))) return -ENOENT; if (!schemata) { - printf("# Skipping empty schemata update\n"); + ksft_print_msg("Skipping empty schemata update\n"); return -1; } @@ -528,9 +520,10 @@ int write_schemata(char *ctrlgrp, char *schemata, int cpu_no, char *resctrl_val) else sprintf(controlgroup, "%s/schemata", RESCTRL_PATH); - if (!strcmp(resctrl_val, "cat") || !strcmp(resctrl_val, "cqm")) + if (!strncmp(resctrl_val, CAT_STR, sizeof(CAT_STR)) || + !strncmp(resctrl_val, CMT_STR, sizeof(CMT_STR))) sprintf(schema, "%s%d%c%s", "L3:", resource_id, '=', schemata); - if (strcmp(resctrl_val, "mba") == 0) + if (!strncmp(resctrl_val, MBA_STR, sizeof(MBA_STR))) sprintf(schema, "%s%d%c%s", "MB:", resource_id, '=', schemata); fp = fopen(controlgroup, "w"); @@ -551,10 +544,9 @@ int write_schemata(char *ctrlgrp, char *schemata, int cpu_no, char *resctrl_val) fclose(fp); out: - printf("%sok Write schema \"%s\" to resctrl FS%s%s\n", - ret ? "not " : "", schema, ret ? " # " : "", - ret ? reason : ""); - tests_run++; + ksft_print_msg("Write schema \"%s\" to resctrl FS%s%s\n", + schema, ret ? " # " : "", + ret ? reason : ""); return ret; } @@ -578,18 +570,20 @@ bool check_resctrlfs_support(void) fclose(inf); - printf("%sok kernel supports resctrl filesystem\n", ret ? "" : "not "); - tests_run++; + ksft_print_msg("%s Check kernel supports resctrl filesystem\n", + ret ? "Pass:" : "Fail:"); + + if (!ret) + return ret; dp = opendir(RESCTRL_PATH); - printf("%sok resctrl mountpoint \"%s\" exists\n", - dp ? "" : "not ", RESCTRL_PATH); + ksft_print_msg("%s Check resctrl mountpoint \"%s\" exists\n", + dp ? "Pass:" : "Fail:", RESCTRL_PATH); if (dp) closedir(dp); - tests_run++; - printf("# resctrl filesystem %s mounted\n", - find_resctrl_mount(NULL) ? "not" : "is"); + ksft_print_msg("resctrl filesystem %s mounted\n", + find_resctrl_mount(NULL) ? "not" : "is"); return ret; } @@ -615,26 +609,56 @@ char *fgrep(FILE *inf, const char *str) * validate_resctrl_feature_request - Check if requested feature is valid. * @resctrl_val: Requested feature * - * Return: 0 on success, non-zero on failure + * Return: True if the feature is supported, else false */ -bool validate_resctrl_feature_request(char *resctrl_val) +bool validate_resctrl_feature_request(const char *resctrl_val) { - FILE *inf = fopen("/proc/cpuinfo", "r"); + struct stat statbuf; bool found = false; char *res; + FILE *inf; - if (!inf) + if (!resctrl_val) return false; - res = fgrep(inf, "flags"); - - if (res) { - char *s = strchr(res, ':'); + if (remount_resctrlfs(false)) + return false; - found = s && !strstr(s, resctrl_val); - free(res); + if (!strncmp(resctrl_val, CAT_STR, sizeof(CAT_STR))) { + if (!stat(L3_PATH, &statbuf)) + return true; + } else if (!strncmp(resctrl_val, MBA_STR, sizeof(MBA_STR))) { + if (!stat(MB_PATH, &statbuf)) + return true; + } else if (!strncmp(resctrl_val, MBM_STR, sizeof(MBM_STR)) || + !strncmp(resctrl_val, CMT_STR, sizeof(CMT_STR))) { + if (!stat(L3_MON_PATH, &statbuf)) { + inf = fopen(L3_MON_FEATURES_PATH, "r"); + if (!inf) + return false; + + if (!strncmp(resctrl_val, CMT_STR, sizeof(CMT_STR))) { + res = fgrep(inf, "llc_occupancy"); + if (res) { + found = true; + free(res); + } + } + + if (!strncmp(resctrl_val, MBM_STR, sizeof(MBM_STR))) { + res = fgrep(inf, "mbm_total_bytes"); + if (res) { + free(res); + res = fgrep(inf, "mbm_local_bytes"); + if (res) { + found = true; + free(res); + } + } + } + fclose(inf); + } } - fclose(inf); return found; } @@ -671,9 +695,9 @@ int filter_dmesg(void) while (fgets(line, 1024, fp)) { if (strstr(line, "intel_rdt:")) - printf("# dmesg: %s", line); + ksft_print_msg("dmesg: %s", line); if (strstr(line, "resctrl:")) - printf("# dmesg: %s", line); + ksft_print_msg("dmesg: %s", line); } fclose(fp); waitpid(pid, NULL, 0); |