/*
 * 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
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 */
thod='get'>
<input type='hidden' name='id' value='44091d29f2075972aede47ef17e1e70db3d51190'/><select name='h' onchange='this.form.submit();'>
<option value='emaclite-cleanup'>emaclite-cleanup</option>
<option value='master'>master</option>
<option value='nds-private-remove' selected='selected'>nds-private-remove</option>
<option value='packet-loop-back'>packet-loop-back</option>
<option value='packet-rx-pump-back'>packet-rx-pump-back</option>
</select> <input type='submit' value='switch'/></form></td></tr>
<tr><td class='sub'>net-next plumbings</td><td class='sub right'>Tobias Klauser</td></tr></table>
<table class='tabs'><tr><td>
<a href='/cgit.cgi/linux/net-next.git/?h=nds-private-remove'>summary</a><a href='/cgit.cgi/linux/net-next.git/refs/?h=nds-private-remove&amp;id=44091d29f2075972aede47ef17e1e70db3d51190'>refs</a><a class='active' href='/cgit.cgi/linux/net-next.git/log/tools/perf/ui/util.c?h=nds-private-remove'>log</a><a href='/cgit.cgi/linux/net-next.git/tree/tools/perf/ui/util.c?h=nds-private-remove&amp;id=44091d29f2075972aede47ef17e1e70db3d51190'>tree</a><a href='/cgit.cgi/linux/net-next.git/commit/tools/perf/ui/util.c?h=nds-private-remove&amp;id=44091d29f2075972aede47ef17e1e70db3d51190'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/tools/perf/ui/util.c?h=nds-private-remove&amp;id=44091d29f2075972aede47ef17e1e70db3d51190'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/tools/perf/ui/util.c'>
<input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='44091d29f2075972aede47ef17e1e70db3d51190'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?h=nds-private-remove&amp;id=44091d29f2075972aede47ef17e1e70db3d51190'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/tools?h=nds-private-remove&amp;id=44091d29f2075972aede47ef17e1e70db3d51190'>tools</a>/<a href='/cgit.cgi/linux/net-next.git/log/tools/perf?h=nds-private-remove&amp;id=44091d29f2075972aede47ef17e1e70db3d51190'>perf</a>/<a href='/cgit.cgi/linux/net-next.git/log/tools/perf/ui?h=nds-private-remove&amp;id=44091d29f2075972aede47ef17e1e70db3d51190'>ui</a>/<a href='/cgit.cgi/linux/net-next.git/log/tools/perf/ui/util.c?h=nds-private-remove&amp;id=44091d29f2075972aede47ef17e1e70db3d51190'>util.c</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/tools/perf/ui/util.c?h=nds-private-remove&amp;id=44091d29f2075972aede47ef17e1e70db3d51190&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>