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// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2022 Bytedance */
#include <argp.h>
#include "bench.h"
#include "bpf_hashmap_full_update_bench.skel.h"
#include "bpf_util.h"
/* BPF triggering benchmarks */
static struct ctx {
struct bpf_hashmap_full_update_bench *skel;
} ctx;
#define MAX_LOOP_NUM 10000
static void validate(void)
{
if (env.consumer_cnt != 1) {
fprintf(stderr, "benchmark doesn't support multi-consumer!\n");
exit(1);
}
}
static void *producer(void *input)
{
while (true) {
/* trigger the bpf program */
syscall(__NR_getpgid);
}
return NULL;
}
static void *consumer(void *input)
{
return NULL;
}
static void measure(struct bench_res *res)
{
}
static void setup(void)
{
struct bpf_link *link;
int map_fd, i, max_entries;
setup_libbpf();
ctx.skel = bpf_hashmap_full_update_bench__open_and_load();
if (!ctx.skel) {
fprintf(stderr, "failed to open skeleton\n");
exit(1);
}
ctx.skel->bss->nr_loops = MAX_LOOP_NUM;
link = bpf_program__attach(ctx.skel->progs.benchmark);
if (!link) {
fprintf(stderr, "failed to attach program!\n");
exit(1);
}
/* fill hash_map */
map_fd = bpf_map__fd(ctx.skel->maps.hash_map_bench);
max_entries = bpf_map__max_entries(ctx.skel->maps.hash_map_bench);
for (i = 0; i < max_entries; i++)
bpf_map_update_elem(map_fd, &i, &i, BPF_ANY);
}
void hashmap_report_final(struct bench_res res[], int res_cnt)
{
unsigned int nr_cpus = bpf_num_possible_cpus();
int i;
for (i = 0; i < nr_cpus; i++) {
u64 time = ctx.skel->bss->percpu_time[i];
if (!time)
continue;
printf("%d:hash_map_full_perf %lld events per sec\n",
i, ctx.skel->bss->nr_loops * 1000000000ll / time);
}
}
const struct bench bench_bpf_hashmap_full_update = {
.name = "bpf-hashmap-ful-update",
.validate = validate,
.setup = setup,
.producer_thread = producer,
.consumer_thread = consumer,
.measure = measure,
.report_progress = NULL,
.report_final = hashmap_report_final,
};
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