map_percpu_stats.c

 1// SPDX-License-Identifier: GPL-2.0
 2/* Copyright (c) 2023 Isovalent */
 3
 4#include "vmlinux.h"
 5#include <bpf/bpf_helpers.h>
 6#include <bpf/bpf_tracing.h>
 7
 8__u32 target_id;
 9
10__s64 bpf_map_sum_elem_count(const struct bpf_map *map) __ksym;
11
12SEC("iter/bpf_map")
13int dump_bpf_map(struct bpf_iter__bpf_map *ctx)
14{
15	struct seq_file *seq = ctx->meta->seq;
16	struct bpf_map *map = ctx->map;
17
18	if (map && map->id == target_id)
19		BPF_SEQ_PRINTF(seq, "%lld", bpf_map_sum_elem_count(map));
20
21	return 0;
22}
23
24char _license[] SEC("license") = "GPL";