Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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};
50
51struct bench {
52 const char *name;
53 const struct argp *argp;
54 void (*validate)(void);
55 void (*setup)(void);
56 void *(*producer_thread)(void *ctx);
57 void *(*consumer_thread)(void *ctx);
58 void (*measure)(struct bench_res* res);
59 void (*report_progress)(int iter, struct bench_res* res, long delta_ns);
60 void (*report_final)(struct bench_res res[], int res_cnt);
61};
62
63struct counter {
64 long value;
65} __attribute__((aligned(128)));
66
67extern struct env env;
68extern const struct bench *bench;
69
70void setup_libbpf(void);
71void hits_drops_report_progress(int iter, struct bench_res *res, long delta_ns);
72void hits_drops_report_final(struct bench_res res[], int res_cnt);
73void false_hits_report_progress(int iter, struct bench_res *res, long delta_ns);
74void false_hits_report_final(struct bench_res res[], int res_cnt);
75void ops_report_progress(int iter, struct bench_res *res, long delta_ns);
76void ops_report_final(struct bench_res res[], int res_cnt);
77void local_storage_report_progress(int iter, struct bench_res *res,
78 long delta_ns);
79void local_storage_report_final(struct bench_res res[], int res_cnt);
80void grace_period_latency_basic_stats(struct bench_res res[], int res_cnt,
81 struct basic_stats *gp_stat);
82void grace_period_ticks_basic_stats(struct bench_res res[], int res_cnt,
83 struct basic_stats *gp_stat);
84
85static inline void atomic_inc(long *value)
86{
87 (void)__atomic_add_fetch(value, 1, __ATOMIC_RELAXED);
88}
89
90static inline void atomic_add(long *value, long n)
91{
92 (void)__atomic_add_fetch(value, n, __ATOMIC_RELAXED);
93}
94
95static inline long atomic_swap(long *value, long n)
96{
97 return __atomic_exchange_n(value, n, __ATOMIC_RELAXED);
98}