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/* Copyright (c) 2016 Facebook
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of version 2 of the GNU General Public
* License as published by the Free Software Foundation.
*/
#include "vmlinux.h"
#include <linux/version.h>
#include <bpf/bpf_helpers.h>
#include <bpf/bpf_tracing.h>
#include <bpf/bpf_core_read.h>
SEC("kprobe/__set_task_comm")
int prog(struct pt_regs *ctx)
{
struct signal_struct *signal;
struct task_struct *tsk;
char oldcomm[TASK_COMM_LEN] = {};
char newcomm[TASK_COMM_LEN] = {};
u16 oom_score_adj;
u32 pid;
tsk = (void *)PT_REGS_PARM1_CORE(ctx);
pid = BPF_CORE_READ(tsk, pid);
bpf_core_read_str(oldcomm, sizeof(oldcomm), &tsk->comm);
bpf_core_read_str(newcomm, sizeof(newcomm),
(void *)PT_REGS_PARM2(ctx));
signal = BPF_CORE_READ(tsk, signal);
oom_score_adj = BPF_CORE_READ(signal, oom_score_adj);
return 0;
}
SEC("kprobe/fib_table_lookup")
int prog2(struct pt_regs *ctx)
{
return 0;
}
char _license[] SEC("license") = "GPL";
u32 _version SEC("version") = LINUX_VERSION_CODE;
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