33 lines
589 B
C
33 lines
589 B
C
// SPDX-License-Identifier: GPL-2.0
|
|
/* Copyright (c) 2021 Facebook */
|
|
#include "vmlinux.h"
|
|
#include <bpf/bpf_helpers.h>
|
|
#include <bpf/bpf_tracing.h>
|
|
#include "bpf_misc.h"
|
|
|
|
char LICENSE[] SEC("license") = "GPL";
|
|
|
|
int pid = 0;
|
|
int fentry_cnt = 0;
|
|
int fexit_cnt = 0;
|
|
|
|
SEC("fentry/" SYS_PREFIX "sys_nanosleep")
|
|
int nanosleep_fentry(void *ctx)
|
|
{
|
|
if (bpf_get_current_pid_tgid() >> 32 != pid)
|
|
return 0;
|
|
|
|
fentry_cnt++;
|
|
return 0;
|
|
}
|
|
|
|
SEC("fexit/" SYS_PREFIX "sys_nanosleep")
|
|
int nanosleep_fexit(void *ctx)
|
|
{
|
|
if (bpf_get_current_pid_tgid() >> 32 != pid)
|
|
return 0;
|
|
|
|
fexit_cnt++;
|
|
return 0;
|
|
}
|