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// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2020 Facebook */
#include <fcntl.h>
#include "bench.h"
#include "test_overhead.skel.h"
/* BPF triggering benchmarks */
static struct ctx {
struct test_overhead *skel;
struct counter hits;
int fd;
} ctx;
static void validate(void)
{
if (env.producer_cnt != 1) {
fprintf(stderr, "benchmark doesn't support multi-producer!\n");
exit(1);
}
if (env.consumer_cnt != 0) {
fprintf(stderr, "benchmark doesn't support consumer!\n");
exit(1);
}
}
static void *producer(void *input)
{
char buf[] = "test_overhead";
int err;
while (true) {
err = write(ctx.fd, buf, sizeof(buf));
if (err < 0) {
fprintf(stderr, "write failed\n");
exit(1);
}
atomic_inc(&ctx.hits.value);
}
}
static void measure(struct bench_res *res)
{
res->hits = atomic_swap(&ctx.hits.value, 0);
}
static void setup_ctx(void)
{
setup_libbpf();
ctx.skel = test_overhead__open_and_load();
if (!ctx.skel) {
fprintf(stderr, "failed to open skeleton\n");
exit(1);
}
ctx.fd = open("/proc/self/comm", O_WRONLY|O_TRUNC);
if (ctx.fd < 0) {
fprintf(stderr, "failed to open /proc/self/comm: %d\n", -errno);
exit(1);
}
}
static void attach_bpf(struct bpf_program *prog)
{
struct bpf_link *link;
link = bpf_program__attach(prog);
if (!link) {
fprintf(stderr, "failed to attach program!\n");
exit(1);
}
}
static void setup_base(void)
{
setup_ctx();
}
static void setup_kprobe(void)
{
setup_ctx();
attach_bpf(ctx.skel->progs.prog1);
}
static void setup_kretprobe(void)
{
setup_ctx();
attach_bpf(ctx.skel->progs.prog2);
}
static void setup_rawtp(void)
{
setup_ctx();
attach_bpf(ctx.skel->progs.prog3);
}
static void setup_fentry(void)
{
setup_ctx();
attach_bpf(ctx.skel->progs.prog4);
}
static void setup_fexit(void)
{
setup_ctx();
attach_bpf(ctx.skel->progs.prog5);
}
const struct bench bench_rename_base = {
.name = "rename-base",
.validate = validate,
.setup = setup_base,
.producer_thread = producer,
.measure = measure,
.report_progress = hits_drops_report_progress,
.report_final = hits_drops_report_final,
};
const struct bench bench_rename_kprobe = {
.name = "rename-kprobe",
.validate = validate,
.setup = setup_kprobe,
.producer_thread = producer,
.measure = measure,
.report_progress = hits_drops_report_progress,
.report_final = hits_drops_report_final,
};
const struct bench bench_rename_kretprobe = {
.name = "rename-kretprobe",
.validate = validate,
.setup = setup_kretprobe,
.producer_thread = producer,
.measure = measure,
.report_progress = hits_drops_report_progress,
.report_final = hits_drops_report_final,
};
const struct bench bench_rename_rawtp = {
.name = "rename-rawtp",
.validate = validate,
.setup = setup_rawtp,
.producer_thread = producer,
.measure = measure,
.report_progress = hits_drops_report_progress,
.report_final = hits_drops_report_final,
};
const struct bench bench_rename_fentry = {
.name = "rename-fentry",
.validate = validate,
.setup = setup_fentry,
.producer_thread = producer,
.measure = measure,
.report_progress = hits_drops_report_progress,
.report_final = hits_drops_report_final,
};
const struct bench bench_rename_fexit = {
.name = "rename-fexit",
.validate = validate,
.setup = setup_fexit,
.producer_thread = producer,
.measure = measure,
.report_progress = hits_drops_report_progress,
.report_final = hits_drops_report_final,
};
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