tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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
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 int consumer_cnt;
28 int producer_cnt;
29 struct cpu_set prod_cpus;
30 struct cpu_set cons_cpus;
31};
32
33struct bench_res {
34 long hits;
35 long drops;
36 long false_hits;
37};
38
39struct bench {
40 const char *name;
41 void (*validate)(void);
42 void (*setup)(void);
43 void *(*producer_thread)(void *ctx);
44 void *(*consumer_thread)(void *ctx);
45 void (*measure)(struct bench_res* res);
46 void (*report_progress)(int iter, struct bench_res* res, long delta_ns);
47 void (*report_final)(struct bench_res res[], int res_cnt);
48};
49
50struct counter {
51 long value;
52} __attribute__((aligned(128)));
53
54extern struct env env;
55extern const struct bench *bench;
56
57void setup_libbpf(void);
58void hits_drops_report_progress(int iter, struct bench_res *res, long delta_ns);
59void hits_drops_report_final(struct bench_res res[], int res_cnt);
60void false_hits_report_progress(int iter, struct bench_res *res, long delta_ns);
61void false_hits_report_final(struct bench_res res[], int res_cnt);
62void ops_report_progress(int iter, struct bench_res *res, long delta_ns);
63void ops_report_final(struct bench_res res[], int res_cnt);
64
65static inline __u64 get_time_ns(void)
66{
67 struct timespec t;
68
69 clock_gettime(CLOCK_MONOTONIC, &t);
70
71 return (u64)t.tv_sec * 1000000000 + t.tv_nsec;
72}
73
74static inline void atomic_inc(long *value)
75{
76 (void)__atomic_add_fetch(value, 1, __ATOMIC_RELAXED);
77}
78
79static inline void atomic_add(long *value, long n)
80{
81 (void)__atomic_add_fetch(value, n, __ATOMIC_RELAXED);
82}
83
84static inline long atomic_swap(long *value, long n)
85{
86 return __atomic_exchange_n(value, n, __ATOMIC_RELAXED);
87}