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 */
 51struct 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
 65pid_t bm_pid, ppid;
 66int tests_run;
 67
 68char llc_occup_path[1024];
 69bool is_amd;
 70
 71bool check_resctrlfs_support(void);
 72int filter_dmesg(void);
 73int remount_resctrlfs(bool mum_resctrlfs);
 74int get_resource_id(int cpu_no, int *resource_id);
 75int umount_resctrlfs(void);
 76int validate_bw_report_request(char *bw_report);
 77bool validate_resctrl_feature_request(char *resctrl_val);
 78char *fgrep(FILE *inf, const char *str);
 79int taskset_benchmark(pid_t bm_pid, int cpu_no);
 80void run_benchmark(int signum, siginfo_t *info, void *ucontext);
 81int write_schemata(char *ctrlgrp, char *schemata, int cpu_no,
 82		   char *resctrl_val);
 83int write_bm_pid_to_resctrl(pid_t bm_pid, char *ctrlgrp, char *mongrp,
 84			    char *resctrl_val);
 85int perf_event_open(struct perf_event_attr *hw_event, pid_t pid, int cpu,
 86		    int group_fd, unsigned long flags);
 87int run_fill_buf(unsigned long span, int malloc_and_init_memory, int memflush,
 88		 int op, char *resctrl_va);
 89int resctrl_val(char **benchmark_cmd, struct resctrl_val_param *param);
 90int mbm_bw_change(int span, int cpu_no, char *bw_report, char **benchmark_cmd);
 91void tests_cleanup(void);
 92void mbm_test_cleanup(void);
 93int mba_schemata_change(int cpu_no, char *bw_report, char **benchmark_cmd);
 94void mba_test_cleanup(void);
 95int get_cbm_mask(char *cache_type);
 96int get_cache_size(int cpu_no, char *cache_type, unsigned long *cache_size);
 97void ctrlc_handler(int signum, siginfo_t *info, void *ptr);
 98int cat_val(struct resctrl_val_param *param);
 99void cat_test_cleanup(void);
100int cat_perf_miss_val(int cpu_no, int no_of_bits, char *cache_type);
101int cqm_resctrl_val(int cpu_no, int n, char **benchmark_cmd);
102unsigned int count_bits(unsigned long n);
103void cqm_test_cleanup(void);
104int get_core_sibling(int cpu_no);
105int measure_cache_vals(struct resctrl_val_param *param, int bm_pid);
106
107#endif /* RESCTRL_H */