Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 121 insertions, 0 deletions

diff --git a/tools/testing/selftests/resctrl/resctrl.h b/tools/testing/selftests/resctrl/resctrl.h
new file mode 100644
index 0000000000..8578a8b4e1
--- /dev/null
+++ b/tools/testing/selftests/resctrl/resctrl.h
@@ -0,0 +1,121 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef RESCTRL_H
+#define RESCTRL_H
+#include <stdio.h>
+#include <math.h>
+#include <errno.h>
+#include <sched.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <signal.h>
+#include <dirent.h>
+#include <stdbool.h>
+#include <sys/stat.h>
+#include <sys/ioctl.h>
+#include <sys/mount.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <sys/select.h>
+#include <sys/time.h>
+#include <sys/eventfd.h>
+#include <asm/unistd.h>
+#include <linux/perf_event.h>
+#include "../kselftest.h"
+
+#define MB			(1024 * 1024)
+#define RESCTRL_PATH		"/sys/fs/resctrl"
+#define PHYS_ID_PATH		"/sys/devices/system/cpu/cpu"
+#define INFO_PATH		"/sys/fs/resctrl/info"
+
+#define ARCH_INTEL     1
+#define ARCH_AMD       2
+
+#define END_OF_TESTS	1
+
+#define BENCHMARK_ARGS		64
+
+#define DEFAULT_SPAN		(250 * MB)
+
+#define PARENT_EXIT(err_msg)			\
+	do {					\
+		perror(err_msg);		\
+		kill(ppid, SIGKILL);		\
+		umount_resctrlfs();		\
+		exit(EXIT_FAILURE);		\
+	} while (0)
+
+/*
+ * resctrl_val_param:	resctrl test parameters
+ * @resctrl_val:	Resctrl feature (Eg: mbm, mba.. etc)
+ * @ctrlgrp:		Name of the control monitor group (con_mon grp)
+ * @mongrp:		Name of the monitor group (mon grp)
+ * @cpu_no:		CPU number to which the benchmark would be binded
+ * @filename:		Name of file to which the o/p should be written
+ * @bw_report:		Bandwidth report type (reads vs writes)
+ * @setup:		Call back function to setup test environment
+ */
+struct resctrl_val_param {
+	char		*resctrl_val;
+	char		ctrlgrp[64];
+	char		mongrp[64];
+	int		cpu_no;
+	char		filename[64];
+	char		*bw_report;
+	unsigned long	mask;
+	int		num_of_runs;
+	int		(*setup)(struct resctrl_val_param *param);
+};
+
+#define MBM_STR			"mbm"
+#define MBA_STR			"mba"
+#define CMT_STR			"cmt"
+#define CAT_STR			"cat"
+
+extern pid_t bm_pid, ppid;
+
+extern char llc_occup_path[1024];
+
+int get_vendor(void);
+bool check_resctrlfs_support(void);
+int filter_dmesg(void);
+int get_resource_id(int cpu_no, int *resource_id);
+int mount_resctrlfs(void);
+int umount_resctrlfs(void);
+int validate_bw_report_request(char *bw_report);
+bool validate_resctrl_feature_request(const char *resource, const char *feature);
+char *fgrep(FILE *inf, const char *str);
+int taskset_benchmark(pid_t bm_pid, int cpu_no);
+void run_benchmark(int signum, siginfo_t *info, void *ucontext);
+int write_schemata(char *ctrlgrp, char *schemata, int cpu_no,
+		   char *resctrl_val);
+int write_bm_pid_to_resctrl(pid_t bm_pid, char *ctrlgrp, char *mongrp,
+			    char *resctrl_val);
+int perf_event_open(struct perf_event_attr *hw_event, pid_t pid, int cpu,
+		    int group_fd, unsigned long flags);
+int run_fill_buf(size_t span, int memflush, int op, bool once);
+int resctrl_val(const char * const *benchmark_cmd, struct resctrl_val_param *param);
+int mbm_bw_change(int cpu_no, const char * const *benchmark_cmd);
+void tests_cleanup(void);
+void mbm_test_cleanup(void);
+int mba_schemata_change(int cpu_no, const char * const *benchmark_cmd);
+void mba_test_cleanup(void);
+int get_cbm_mask(char *cache_type, char *cbm_mask);
+int get_cache_size(int cpu_no, char *cache_type, unsigned long *cache_size);
+void ctrlc_handler(int signum, siginfo_t *info, void *ptr);
+int signal_handler_register(void);
+void signal_handler_unregister(void);
+int cat_val(struct resctrl_val_param *param, size_t span);
+void cat_test_cleanup(void);
+int cat_perf_miss_val(int cpu_no, int no_of_bits, char *cache_type);
+int cmt_resctrl_val(int cpu_no, int n, const char * const *benchmark_cmd);
+unsigned int count_bits(unsigned long n);
+void cmt_test_cleanup(void);
+int get_core_sibling(int cpu_no);
+int measure_cache_vals(struct resctrl_val_param *param, int bm_pid);
+int show_cache_info(unsigned long sum_llc_val, int no_of_bits,
+		    size_t cache_span, unsigned long max_diff,
+		    unsigned long max_diff_percent, unsigned long num_of_runs,
+		    bool platform, bool cmt);
+
+#endif /* RESCTRL_H */