| Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame^] | 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 | #define MBM_STR "mbm" |
| 66 | #define MBA_STR "mba" |
| 67 | #define CQM_STR "cqm" |
| 68 | #define CAT_STR "cat" |
| 69 | |
| 70 | extern pid_t bm_pid, ppid; |
| 71 | extern int tests_run; |
| 72 | |
| 73 | extern char llc_occup_path[1024]; |
| 74 | extern bool is_amd; |
| 75 | |
| 76 | bool check_resctrlfs_support(void); |
| 77 | int filter_dmesg(void); |
| 78 | int remount_resctrlfs(bool mum_resctrlfs); |
| 79 | int get_resource_id(int cpu_no, int *resource_id); |
| 80 | int umount_resctrlfs(void); |
| 81 | int validate_bw_report_request(char *bw_report); |
| 82 | bool validate_resctrl_feature_request(char *resctrl_val); |
| 83 | char *fgrep(FILE *inf, const char *str); |
| 84 | int taskset_benchmark(pid_t bm_pid, int cpu_no); |
| 85 | void run_benchmark(int signum, siginfo_t *info, void *ucontext); |
| 86 | int write_schemata(char *ctrlgrp, char *schemata, int cpu_no, |
| 87 | char *resctrl_val); |
| 88 | int write_bm_pid_to_resctrl(pid_t bm_pid, char *ctrlgrp, char *mongrp, |
| 89 | char *resctrl_val); |
| 90 | int perf_event_open(struct perf_event_attr *hw_event, pid_t pid, int cpu, |
| 91 | int group_fd, unsigned long flags); |
| 92 | int run_fill_buf(unsigned long span, int malloc_and_init_memory, int memflush, |
| 93 | int op, char *resctrl_va); |
| 94 | int resctrl_val(char **benchmark_cmd, struct resctrl_val_param *param); |
| 95 | int mbm_bw_change(int span, int cpu_no, char *bw_report, char **benchmark_cmd); |
| 96 | void tests_cleanup(void); |
| 97 | void mbm_test_cleanup(void); |
| 98 | int mba_schemata_change(int cpu_no, char *bw_report, char **benchmark_cmd); |
| 99 | void mba_test_cleanup(void); |
| 100 | int get_cbm_mask(char *cache_type, char *cbm_mask); |
| 101 | int get_cache_size(int cpu_no, char *cache_type, unsigned long *cache_size); |
| 102 | void ctrlc_handler(int signum, siginfo_t *info, void *ptr); |
| 103 | int cat_val(struct resctrl_val_param *param); |
| 104 | void cat_test_cleanup(void); |
| 105 | int cat_perf_miss_val(int cpu_no, int no_of_bits, char *cache_type); |
| 106 | int cqm_resctrl_val(int cpu_no, int n, char **benchmark_cmd); |
| 107 | unsigned int count_bits(unsigned long n); |
| 108 | void cqm_test_cleanup(void); |
| 109 | int get_core_sibling(int cpu_no); |
| 110 | int measure_cache_vals(struct resctrl_val_param *param, int bm_pid); |
| 111 | |
| 112 | #endif /* RESCTRL_H */ |