mirror of https://gitee.com/openkylin/linux.git
26 lines
587 B
C
26 lines
587 B
C
// SPDX-License-Identifier: GPL-2.0
|
|
// Copyright (c) 2019 Facebook
|
|
|
|
#include <linux/ptrace.h>
|
|
#include <linux/bpf.h>
|
|
#include <bpf/bpf_helpers.h>
|
|
#include "bpf_trace_helpers.h"
|
|
|
|
struct {
|
|
__uint(type, BPF_MAP_TYPE_PERF_EVENT_ARRAY);
|
|
__uint(key_size, sizeof(int));
|
|
__uint(value_size, sizeof(int));
|
|
} perf_buf_map SEC(".maps");
|
|
|
|
SEC("kprobe/sys_nanosleep")
|
|
int BPF_KPROBE(handle_sys_nanosleep_entry)
|
|
{
|
|
int cpu = bpf_get_smp_processor_id();
|
|
|
|
bpf_perf_event_output(ctx, &perf_buf_map, BPF_F_CURRENT_CPU,
|
|
&cpu, sizeof(cpu));
|
|
return 0;
|
|
}
|
|
|
|
char _license[] SEC("license") = "GPL";
|