| /* 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> |
| |
| #define MB (1024 * 1024) |
| #define RESCTRL_PATH "/sys/fs/resctrl" |
| #define PHYS_ID_PATH "/sys/devices/system/cpu/cpu" |
| #define CBM_MASK_PATH "/sys/fs/resctrl/info" |
| |
| #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; |
| int 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 CQM_STR "cqm" |
| #define CAT_STR "cat" |
| |
| extern pid_t bm_pid, ppid; |
| extern int tests_run; |
| |
| extern char llc_occup_path[1024]; |
| extern bool is_amd; |
| |
| 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(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 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 cqm_resctrl_val(int cpu_no, int n, char **benchmark_cmd); |
| unsigned int count_bits(unsigned long n); |
| void cqm_test_cleanup(void); |
| int get_core_sibling(int cpu_no); |
| int measure_cache_vals(struct resctrl_val_param *param, int bm_pid); |
| |
| #endif /* RESCTRL_H */ |