Contributors: 3
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| He Kuang |
111 |
96.52% |
1 |
33.33% |
| Arnaldo Carvalho de Melo |
3 |
2.61% |
1 |
33.33% |
| Greg Kroah-Hartman |
1 |
0.87% |
1 |
33.33% |
| Total |
115 |
|
3 |
|
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2015, He Kuang <hekuang@huawei.com>
* Copyright (C) 2015, Huawei Inc.
*/
#ifndef __BPF_PROLOGUE_H
#define __BPF_PROLOGUE_H
#include <linux/compiler.h>
#include <linux/filter.h>
#include "probe-event.h"
#define BPF_PROLOGUE_MAX_ARGS 3
#define BPF_PROLOGUE_START_ARG_REG BPF_REG_3
#define BPF_PROLOGUE_FETCH_RESULT_REG BPF_REG_2
#ifdef HAVE_BPF_PROLOGUE
int bpf__gen_prologue(struct probe_trace_arg *args, int nargs,
struct bpf_insn *new_prog, size_t *new_cnt,
size_t cnt_space);
#else
#include <errno.h>
static inline int
bpf__gen_prologue(struct probe_trace_arg *args __maybe_unused,
int nargs __maybe_unused,
struct bpf_insn *new_prog __maybe_unused,
size_t *new_cnt,
size_t cnt_space __maybe_unused)
{
if (!new_cnt)
return -EINVAL;
*new_cnt = 0;
return -ENOTSUP;
}
#endif
#endif /* __BPF_PROLOGUE_H */