resctrl.h (4129B)
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#include "../kselftest.h" 27 28#define MB (1024 * 1024) 29#define RESCTRL_PATH "/sys/fs/resctrl" 30#define PHYS_ID_PATH "/sys/devices/system/cpu/cpu" 31#define CBM_MASK_PATH "/sys/fs/resctrl/info" 32#define L3_PATH "/sys/fs/resctrl/info/L3" 33#define MB_PATH "/sys/fs/resctrl/info/MB" 34#define L3_MON_PATH "/sys/fs/resctrl/info/L3_MON" 35#define L3_MON_FEATURES_PATH "/sys/fs/resctrl/info/L3_MON/mon_features" 36 37#define ARCH_INTEL 1 38#define ARCH_AMD 2 39 40#define PARENT_EXIT(err_msg) \ 41 do { \ 42 perror(err_msg); \ 43 kill(ppid, SIGKILL); \ 44 exit(EXIT_FAILURE); \ 45 } while (0) 46 47/* 48 * resctrl_val_param: resctrl test parameters 49 * @resctrl_val: Resctrl feature (Eg: mbm, mba.. etc) 50 * @ctrlgrp: Name of the control monitor group (con_mon grp) 51 * @mongrp: Name of the monitor group (mon grp) 52 * @cpu_no: CPU number to which the benchmark would be binded 53 * @span: Memory bytes accessed in each benchmark iteration 54 * @mum_resctrlfs: Should the resctrl FS be remounted? 55 * @filename: Name of file to which the o/p should be written 56 * @bw_report: Bandwidth report type (reads vs writes) 57 * @setup: Call back function to setup test environment 58 */ 59struct resctrl_val_param { 60 char *resctrl_val; 61 char ctrlgrp[64]; 62 char mongrp[64]; 63 int cpu_no; 64 unsigned long span; 65 int mum_resctrlfs; 66 char filename[64]; 67 char *bw_report; 68 unsigned long mask; 69 int num_of_runs; 70 int (*setup)(int num, ...); 71}; 72 73#define MBM_STR "mbm" 74#define MBA_STR "mba" 75#define CMT_STR "cmt" 76#define CAT_STR "cat" 77 78extern pid_t bm_pid, ppid; 79 80extern char llc_occup_path[1024]; 81 82int get_vendor(void); 83bool check_resctrlfs_support(void); 84int filter_dmesg(void); 85int remount_resctrlfs(bool mum_resctrlfs); 86int get_resource_id(int cpu_no, int *resource_id); 87int umount_resctrlfs(void); 88int validate_bw_report_request(char *bw_report); 89bool validate_resctrl_feature_request(const char *resctrl_val); 90char *fgrep(FILE *inf, const char *str); 91int taskset_benchmark(pid_t bm_pid, int cpu_no); 92void run_benchmark(int signum, siginfo_t *info, void *ucontext); 93int write_schemata(char *ctrlgrp, char *schemata, int cpu_no, 94 char *resctrl_val); 95int write_bm_pid_to_resctrl(pid_t bm_pid, char *ctrlgrp, char *mongrp, 96 char *resctrl_val); 97int perf_event_open(struct perf_event_attr *hw_event, pid_t pid, int cpu, 98 int group_fd, unsigned long flags); 99int run_fill_buf(unsigned long span, int malloc_and_init_memory, int memflush, 100 int op, char *resctrl_va); 101int resctrl_val(char **benchmark_cmd, struct resctrl_val_param *param); 102int mbm_bw_change(int span, int cpu_no, char *bw_report, char **benchmark_cmd); 103void tests_cleanup(void); 104void mbm_test_cleanup(void); 105int mba_schemata_change(int cpu_no, char *bw_report, char **benchmark_cmd); 106void mba_test_cleanup(void); 107int get_cbm_mask(char *cache_type, char *cbm_mask); 108int get_cache_size(int cpu_no, char *cache_type, unsigned long *cache_size); 109void ctrlc_handler(int signum, siginfo_t *info, void *ptr); 110int cat_val(struct resctrl_val_param *param); 111void cat_test_cleanup(void); 112int cat_perf_miss_val(int cpu_no, int no_of_bits, char *cache_type); 113int cmt_resctrl_val(int cpu_no, int n, char **benchmark_cmd); 114unsigned int count_bits(unsigned long n); 115void cmt_test_cleanup(void); 116int get_core_sibling(int cpu_no); 117int measure_cache_vals(struct resctrl_val_param *param, int bm_pid); 118int show_cache_info(unsigned long sum_llc_val, int no_of_bits, 119 unsigned long cache_span, unsigned long max_diff, 120 unsigned long max_diff_percent, unsigned long num_of_runs, 121 bool platform, bool cmt); 122 123#endif /* RESCTRL_H */