Quelle  test_tracepoint.c   Sprache: C

// SPDX-License-Identifier: GPL-2.0
// Copyright (c) 2017 Facebook

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

/* taken from /sys/kernel/tracing/events/sched/sched_switch/format */
struct sched_switch_args {
 unsigned long long pad;
 char prev_comm[TASK_COMM_LEN];
 int prev_pid;
 int prev_prio;
 long long prev_state;
 char next_comm[TASK_COMM_LEN];
 int next_pid;
 int next_prio;
};

SEC("tracepoint/sched/sched_switch")
int oncpu(struct sched_switch_args *ctx)
{
 return 0;
}

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