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

source code of linux/tools/testing/selftests/bpf/bench.h