// SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2020 Facebook */ /* "undefine" structs in vmlinux.h, because we "override" them below */ #define bpf_iter_meta bpf_iter_meta___not_used #define bpf_iter__bpf_map bpf_iter__bpf_map___not_used #include "vmlinux.h" #undef bpf_iter_meta #undef bpf_iter__bpf_map #include <bpf/bpf_helpers.h> #include <bpf/bpf_tracing.h> char _license[] SEC("license") = "GPL"; struct bpf_iter_meta { struct seq_file *seq; __u64 session_id; __u64 seq_num; } __attribute__((preserve_access_index)); struct bpf_iter__bpf_map { struct bpf_iter_meta *meta; struct bpf_map *map; } __attribute__((preserve_access_index)); SEC("iter/bpf_map") int dump_bpf_map(struct bpf_iter__bpf_map *ctx) { struct seq_file *seq = ctx->meta->seq; __u64 seq_num = ctx->meta->seq_num; struct bpf_map *map = ctx->map; if (map == (void *)0) { BPF_SEQ_PRINTF(seq, " %%%%%% END %%%%%%\n"); return 0; } if (seq_num == 0) BPF_SEQ_PRINTF(seq, " id refcnt usercnt locked_vm\n"); BPF_SEQ_PRINTF(seq, "%8u %8ld %8ld %10lu\n", map->id, map->refcnt.counter, map->usercnt.counter, map->memory.user->locked_vm.counter); return 0; }