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508934b5d1
resctrlfs.c contains mostly functions that interact in some way with resctrl FS entries while functions inside resctrl_val.c deal with measurements and benchmarking. run_benchmark() is located in resctrlfs.c even though it's purpose is not interacting with the resctrl FS but to execute cache checking logic. Move run_benchmark() to resctrl_val.c just before resctrl_val() that makes use of run_benchmark(). Make run_benchmark() static since it's not used between multiple files anymore. Remove return comment from kernel-doc since the function is type void. Signed-off-by: Maciej Wieczor-Retman <maciej.wieczor-retman@intel.com> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Reviewed-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
120 lines
3.7 KiB
C
120 lines
3.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef RESCTRL_H
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#define RESCTRL_H
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#include <stdio.h>
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#include <math.h>
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#include <errno.h>
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#include <sched.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <signal.h>
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#include <dirent.h>
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#include <stdbool.h>
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#include <sys/stat.h>
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#include <sys/ioctl.h>
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#include <sys/mount.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <sys/select.h>
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#include <sys/time.h>
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#include <sys/eventfd.h>
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#include <asm/unistd.h>
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#include <linux/perf_event.h>
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#include "../kselftest.h"
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#define MB (1024 * 1024)
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#define RESCTRL_PATH "/sys/fs/resctrl"
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#define PHYS_ID_PATH "/sys/devices/system/cpu/cpu"
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#define INFO_PATH "/sys/fs/resctrl/info"
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#define ARCH_INTEL 1
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#define ARCH_AMD 2
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#define END_OF_TESTS 1
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#define BENCHMARK_ARGS 64
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#define DEFAULT_SPAN (250 * MB)
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#define PARENT_EXIT(err_msg) \
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do { \
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perror(err_msg); \
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kill(ppid, SIGKILL); \
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umount_resctrlfs(); \
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exit(EXIT_FAILURE); \
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} while (0)
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/*
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* resctrl_val_param: resctrl test parameters
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* @resctrl_val: Resctrl feature (Eg: mbm, mba.. etc)
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* @ctrlgrp: Name of the control monitor group (con_mon grp)
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* @mongrp: Name of the monitor group (mon grp)
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* @cpu_no: CPU number to which the benchmark would be binded
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* @filename: Name of file to which the o/p should be written
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* @bw_report: Bandwidth report type (reads vs writes)
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* @setup: Call back function to setup test environment
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*/
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struct resctrl_val_param {
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char *resctrl_val;
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char ctrlgrp[64];
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char mongrp[64];
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int cpu_no;
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char filename[64];
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char *bw_report;
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unsigned long mask;
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int num_of_runs;
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int (*setup)(struct resctrl_val_param *param);
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};
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#define MBM_STR "mbm"
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#define MBA_STR "mba"
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#define CMT_STR "cmt"
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#define CAT_STR "cat"
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extern pid_t bm_pid, ppid;
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extern char llc_occup_path[1024];
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int get_vendor(void);
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bool check_resctrlfs_support(void);
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int filter_dmesg(void);
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int get_resource_id(int cpu_no, int *resource_id);
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int mount_resctrlfs(void);
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int umount_resctrlfs(void);
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int validate_bw_report_request(char *bw_report);
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bool validate_resctrl_feature_request(const char *resource, const char *feature);
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char *fgrep(FILE *inf, const char *str);
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int taskset_benchmark(pid_t bm_pid, int cpu_no);
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int write_schemata(char *ctrlgrp, char *schemata, int cpu_no,
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char *resctrl_val);
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int write_bm_pid_to_resctrl(pid_t bm_pid, char *ctrlgrp, char *mongrp,
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char *resctrl_val);
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int perf_event_open(struct perf_event_attr *hw_event, pid_t pid, int cpu,
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int group_fd, unsigned long flags);
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int run_fill_buf(size_t span, int memflush, int op, bool once);
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int resctrl_val(const char * const *benchmark_cmd, struct resctrl_val_param *param);
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int mbm_bw_change(int cpu_no, const char * const *benchmark_cmd);
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void tests_cleanup(void);
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void mbm_test_cleanup(void);
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int mba_schemata_change(int cpu_no, const char * const *benchmark_cmd);
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void mba_test_cleanup(void);
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int get_cbm_mask(char *cache_type, char *cbm_mask);
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int get_cache_size(int cpu_no, char *cache_type, unsigned long *cache_size);
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void ctrlc_handler(int signum, siginfo_t *info, void *ptr);
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int signal_handler_register(void);
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void signal_handler_unregister(void);
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int cat_val(struct resctrl_val_param *param, size_t span);
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void cat_test_cleanup(void);
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int cat_perf_miss_val(int cpu_no, int no_of_bits, char *cache_type);
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int cmt_resctrl_val(int cpu_no, int n, const char * const *benchmark_cmd);
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unsigned int count_bits(unsigned long n);
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void cmt_test_cleanup(void);
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int get_core_sibling(int cpu_no);
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int measure_cache_vals(struct resctrl_val_param *param, int bm_pid);
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int show_cache_info(unsigned long sum_llc_val, int no_of_bits,
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size_t cache_span, unsigned long max_diff,
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unsigned long max_diff_percent, unsigned long num_of_runs,
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bool platform, bool cmt);
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#endif /* RESCTRL_H */
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