tools/testing/selftests/bpf/progs/map_percpu_stats.c

Source file repositories/reference/linux-study-clean/tools/testing/selftests/bpf/progs/map_percpu_stats.c

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/bpf/progs/map_percpu_stats.c
Extension
.c
Size
528 bytes
Lines
25
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: implementation source
Status
source implementation candidate

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2023 Isovalent */

#include "vmlinux.h"
#include <bpf/bpf_helpers.h>
#include <bpf/bpf_tracing.h>

__u32 target_id;

__s64 bpf_map_sum_elem_count(const struct bpf_map *map) __ksym;

SEC("iter/bpf_map")
int dump_bpf_map(struct bpf_iter__bpf_map *ctx)
{
	struct seq_file *seq = ctx->meta->seq;
	struct bpf_map *map = ctx->map;

	if (map && map->id == target_id)
		BPF_SEQ_PRINTF(seq, "%lld", bpf_map_sum_elem_count(map));

	return 0;
}

char _license[] SEC("license") = "GPL";

Annotation

Implementation Notes