1
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
49
50
51
52
53
54
55
56
57
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
124