Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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 */