kernel/tools/testing/selftests/bpf/progs/bpf_iter_task.c

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2024-07-22 17:22:30 +08:00
// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2020 Facebook */
#include "bpf_iter.h"
#include <bpf/bpf_helpers.h>
char _license[] SEC("license") = "GPL";
SEC("iter/task")
int dump_task(struct bpf_iter__task *ctx)
{
struct seq_file *seq = ctx->meta->seq;
struct task_struct *task = ctx->task;
static char info[] = " === END ===";
if (task == (void *)0) {
BPF_SEQ_PRINTF(seq, "%s\n", info);
return 0;
}
if (ctx->meta->seq_num == 0)
BPF_SEQ_PRINTF(seq, " tgid gid\n");
BPF_SEQ_PRINTF(seq, "%8d %8d\n", task->tgid, task->pid);
return 0;
}