/* SPDX-License-Identifier: GPL-2.0 */ #define _GNU_SOURCE #ifndef RESCTRL_H #define RESCTRL_H #include <stdio.h> #include <stdarg.h> #include <math.h> #include <errno.h> #include <sched.h> #include <stdlib.h> #include <unistd.h> #include <string.h> #include <signal.h> #include <dirent.h> #include <stdbool.h> #include <sys/stat.h> #include <sys/ioctl.h> #include <sys/mount.h> #include <sys/types.h> #include <sys/wait.h> #include <sys/select.h> #include <sys/time.h> #include <sys/eventfd.h> #include <asm/unistd.h> #include <linux/perf_event.h> #include "../kselftest.h" #define MB (1024 * 1024) #define RESCTRL_PATH "/sys/fs/resctrl" #define PHYS_ID_PATH "/sys/devices/system/cpu/cpu" #define INFO_PATH "/sys/fs/resctrl/info" #define L3_PATH "/sys/fs/resctrl/info/L3" #define MB_PATH "/sys/fs/resctrl/info/MB" #define L3_MON_PATH "/sys/fs/resctrl/info/L3_MON" #define L3_MON_FEATURES_PATH "/sys/fs/resctrl/info/L3_MON/mon_features" #define ARCH_INTEL 1 #define ARCH_AMD 2 #define END_OF_TESTS 1 #define PARENT_EXIT(err_msg) \ do { \ perror(err_msg); \ kill(ppid, SIGKILL); \ exit(EXIT_FAILURE); \ } while (0) /* * resctrl_val_param: resctrl test parameters * @resctrl_val: Resctrl feature (Eg: mbm, mba.. etc) * @ctrlgrp: Name of the control monitor group (con_mon grp) * @mongrp: Name of the monitor group (mon grp) * @cpu_no: CPU number to which the benchmark would be binded * @span: Memory bytes accessed in each benchmark iteration * @mum_resctrlfs: Should the resctrl FS be remounted? * @filename: Name of file to which the o/p should be written * @bw_report: Bandwidth report type (reads vs writes) * @setup: Call back function to setup test environment */ struct resctrl_val_param { char *resctrl_val; char ctrlgrp[64]; char mongrp[64]; int cpu_no; unsigned long span; bool mum_resctrlfs; char filename[64]; char *bw_report; unsigned long mask; int num_of_runs; int (*setup)(int num, ...); }; #define MBM_STR "mbm" #define MBA_STR "mba" #define CMT_STR "cmt" #define CAT_STR "cat" extern pid_t bm_pid, ppid; extern char llc_occup_path[1024]; int get_vendor(void); bool check_resctrlfs_support(void); int filter_dmesg(void); int remount_resctrlfs(bool mum_resctrlfs); int get_resource_id(int cpu_no, int *resource_id); int umount_resctrlfs(void); int validate_bw_report_request(char *bw_report); bool validate_resctrl_feature_request(const char *resctrl_val); char *fgrep(FILE *inf, const char *str); int taskset_benchmark(pid_t bm_pid, int cpu_no); void run_benchmark(int signum, siginfo_t *info, void *ucontext); int write_schemata(char *ctrlgrp, char *schemata, int cpu_no, char *resctrl_val); 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(unsigned long span, int malloc_and_init_memory, int memflush, int op, char *resctrl_va); int resctrl_val(char **benchmark_cmd, struct resctrl_val_param *param); int mbm_bw_change(int span, int cpu_no, char *bw_report, char **benchmark_cmd); void tests_cleanup(void); void mbm_test_cleanup(void); int mba_schemata_change(int cpu_no, char *bw_report, char **benchmark_cmd); void mba_test_cleanup(void); int get_cbm_mask(char *cache_type, char *cbm_mask); int get_cache_size(int cpu_no, char *cache_type, unsigned long *cache_size); void ctrlc_handler(int signum, siginfo_t *info, void *ptr); int signal_handler_register(void); void signal_handler_unregister(void); int cat_val(struct resctrl_val_param *param); void cat_test_cleanup(void); int cat_perf_miss_val(int cpu_no, int no_of_bits, char *cache_type); int cmt_resctrl_val(int cpu_no, int n, char **benchmark_cmd); unsigned int count_bits(unsigned long n); void cmt_test_cleanup(void); int get_core_sibling(int cpu_no); int measure_cache_vals(struct resctrl_val_param *param, int bm_pid); int show_cache_info(unsigned long sum_llc_val, int no_of_bits, unsigned long cache_span, unsigned long max_diff, unsigned long max_diff_percent, unsigned long num_of_runs, bool platform, bool cmt); #endif /* RESCTRL_H */