bench.h

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#pragma once
 3#include <stdlib.h>
 4#include <stdbool.h>
 5#include <linux/err.h>
 6#include <errno.h>
 7#include <unistd.h>
 8#include <bpf/bpf.h>
 9#include <bpf/libbpf.h>
10#include <math.h>
11#include <time.h>
12#include <sys/syscall.h>
13#include <limits.h>
14
15struct cpu_set {
16	bool *cpus;
17	int cpus_len;
18	int next_cpu;
19};
20
21struct env {
22	char *bench_name;
23	int duration_sec;
24	int warmup_sec;
25	bool verbose;
26	bool list;
27	bool affinity;
28	bool quiet;
29	int consumer_cnt;
30	int producer_cnt;
31	int nr_cpus;
32	struct cpu_set prod_cpus;
33	struct cpu_set cons_cpus;
34};
35
36struct basic_stats {
37	double mean;
38	double stddev;
39};
40
41struct bench_res {
42	long hits;
43	long drops;
44	long false_hits;
45	long important_hits;
46	unsigned long gp_ns;
47	unsigned long gp_ct;
48	unsigned int stime;
49	unsigned long duration_ns;
50};
51
52struct bench {
53	const char *name;
54	const struct argp *argp;
55	void (*validate)(void);
56	void (*setup)(void);
57	void *(*producer_thread)(void *ctx);
58	void *(*consumer_thread)(void *ctx);
59	void (*measure)(struct bench_res* res);
60	void (*report_progress)(int iter, struct bench_res* res, long delta_ns);
61	void (*report_final)(struct bench_res res[], int res_cnt);
62};
63
64struct counter {
65	long value;
66} __attribute__((aligned(128)));
67
68extern struct env env;
69extern const struct bench *bench;
70
71void setup_libbpf(void);
72void hits_drops_report_progress(int iter, struct bench_res *res, long delta_ns);
73void hits_drops_report_final(struct bench_res res[], int res_cnt);
74void false_hits_report_progress(int iter, struct bench_res *res, long delta_ns);
75void false_hits_report_final(struct bench_res res[], int res_cnt);
76void ops_report_progress(int iter, struct bench_res *res, long delta_ns);
77void ops_report_final(struct bench_res res[], int res_cnt);
78void local_storage_report_progress(int iter, struct bench_res *res,
79				   long delta_ns);
80void local_storage_report_final(struct bench_res res[], int res_cnt);
81void grace_period_latency_basic_stats(struct bench_res res[], int res_cnt,
82				      struct basic_stats *gp_stat);
83void grace_period_ticks_basic_stats(struct bench_res res[], int res_cnt,
84				    struct basic_stats *gp_stat);
85
86static inline void atomic_inc(long *value)
87{
88	(void)__atomic_add_fetch(value, 1, __ATOMIC_RELAXED);
89}
90
91static inline void atomic_add(long *value, long n)
92{
93	(void)__atomic_add_fetch(value, n, __ATOMIC_RELAXED);
94}
95
96static inline long atomic_swap(long *value, long n)
97{
98	return __atomic_exchange_n(value, n, __ATOMIC_RELAXED);
99}