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git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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33403bc7fe
Perf counters are __u64 but the code converts them to unsigned long before printing them out. Remove unnecessary type conversion and retain the perf originating value as __u64. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Reviewed-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
142 lines
4.4 KiB
C
142 lines
4.4 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() \
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do { \
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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 buf_size, 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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unsigned long create_bit_mask(unsigned int start, unsigned int len);
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int get_full_cbm(const char *cache_type, unsigned long *mask);
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int get_mask_no_shareable(const char *cache_type, unsigned long *mask);
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int get_cache_size(int cpu_no, const 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_llc_resctrl(const char *filename, int bm_pid);
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void show_cache_info(int no_of_bits, __u64 avg_llc_val, size_t cache_span, bool lines);
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/*
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* cache_portion_size - Calculate the size of a cache portion
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* @cache_size: Total cache size in bytes
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* @portion_mask: Cache portion mask
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* @full_cache_mask: Full Cache Bit Mask (CBM) for the cache
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*
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* Return: The size of the cache portion in bytes.
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*/
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static inline unsigned long cache_portion_size(unsigned long cache_size,
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unsigned long portion_mask,
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unsigned long full_cache_mask)
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{
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unsigned int bits = count_bits(full_cache_mask);
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/*
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* With no bits the full CBM, assume cache cannot be split into
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* smaller portions. To avoid divide by zero, return cache_size.
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*/
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if (!bits)
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return cache_size;
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return cache_size * count_bits(portion_mask) / bits;
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}
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#endif /* RESCTRL_H */
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