1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #define _GNU_SOURCE 3 #ifndef RESCTRL_H 4 #define RESCTRL_H 5 #include <stdio.h> 6 #include <stdarg.h> 7 #include <math.h> 8 #include <errno.h> 9 #include <sched.h> 10 #include <stdlib.h> 11 #include <unistd.h> 12 #include <string.h> 13 #include <signal.h> 14 #include <dirent.h> 15 #include <stdbool.h> 16 #include <sys/stat.h> 17 #include <sys/ioctl.h> 18 #include <sys/mount.h> 19 #include <sys/types.h> 20 #include <sys/wait.h> 21 #include <sys/select.h> 22 #include <sys/time.h> 23 #include <sys/eventfd.h> 24 #include <asm/unistd.h> 25 #include <linux/perf_event.h> 26 27 #define MB (1024 * 1024) 28 #define RESCTRL_PATH "/sys/fs/resctrl" 29 #define PHYS_ID_PATH "/sys/devices/system/cpu/cpu" 30 #define CBM_MASK_PATH "/sys/fs/resctrl/info" 31 32 #define PARENT_EXIT(err_msg) \ 33 do { \ 34 perror(err_msg); \ 35 kill(ppid, SIGKILL); \ 36 exit(EXIT_FAILURE); \ 37 } while (0) 38 39 /* 40 * resctrl_val_param: resctrl test parameters 41 * @resctrl_val: Resctrl feature (Eg: mbm, mba.. etc) 42 * @ctrlgrp: Name of the control monitor group (con_mon grp) 43 * @mongrp: Name of the monitor group (mon grp) 44 * @cpu_no: CPU number to which the benchmark would be binded 45 * @span: Memory bytes accessed in each benchmark iteration 46 * @mum_resctrlfs: Should the resctrl FS be remounted? 47 * @filename: Name of file to which the o/p should be written 48 * @bw_report: Bandwidth report type (reads vs writes) 49 * @setup: Call back function to setup test environment 50 */ 51 struct resctrl_val_param { 52 char *resctrl_val; 53 char ctrlgrp[64]; 54 char mongrp[64]; 55 int cpu_no; 56 unsigned long span; 57 int mum_resctrlfs; 58 char filename[64]; 59 char *bw_report; 60 unsigned long mask; 61 int num_of_runs; 62 int (*setup)(int num, ...); 63 }; 64 65 pid_t bm_pid, ppid; 66 int tests_run; 67 68 char llc_occup_path[1024]; 69 bool is_amd; 70 71 bool check_resctrlfs_support(void); 72 int filter_dmesg(void); 73 int remount_resctrlfs(bool mum_resctrlfs); 74 int get_resource_id(int cpu_no, int *resource_id); 75 int umount_resctrlfs(void); 76 int validate_bw_report_request(char *bw_report); 77 bool validate_resctrl_feature_request(char *resctrl_val); 78 char *fgrep(FILE *inf, const char *str); 79 int taskset_benchmark(pid_t bm_pid, int cpu_no); 80 void run_benchmark(int signum, siginfo_t *info, void *ucontext); 81 int write_schemata(char *ctrlgrp, char *schemata, int cpu_no, 82 char *resctrl_val); 83 int write_bm_pid_to_resctrl(pid_t bm_pid, char *ctrlgrp, char *mongrp, 84 char *resctrl_val); 85 int perf_event_open(struct perf_event_attr *hw_event, pid_t pid, int cpu, 86 int group_fd, unsigned long flags); 87 int run_fill_buf(unsigned long span, int malloc_and_init_memory, int memflush, 88 int op, char *resctrl_va); 89 int resctrl_val(char **benchmark_cmd, struct resctrl_val_param *param); 90 int mbm_bw_change(int span, int cpu_no, char *bw_report, char **benchmark_cmd); 91 void tests_cleanup(void); 92 void mbm_test_cleanup(void); 93 int mba_schemata_change(int cpu_no, char *bw_report, char **benchmark_cmd); 94 void mba_test_cleanup(void); 95 int get_cbm_mask(char *cache_type); 96 int get_cache_size(int cpu_no, char *cache_type, unsigned long *cache_size); 97 void ctrlc_handler(int signum, siginfo_t *info, void *ptr); 98 int cat_val(struct resctrl_val_param *param); 99 void cat_test_cleanup(void); 100 int cat_perf_miss_val(int cpu_no, int no_of_bits, char *cache_type); 101 int cqm_resctrl_val(int cpu_no, int n, char **benchmark_cmd); 102 unsigned int count_bits(unsigned long n); 103 void cqm_test_cleanup(void); 104 int get_core_sibling(int cpu_no); 105 int measure_cache_vals(struct resctrl_val_param *param, int bm_pid); 106 107 #endif /* RESCTRL_H */ 108