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efcef17a6d
This patch let bpftool print .dot graph file into stdout. This graph is generated by the following steps: - iterate through the function list. - generate basic-block(BB) definition for each BB in the function. - draw out edges to connect BBs. This patch is the initial support, the layout and decoration of the .dot graph could be improved. Also, it will be useful if we could visualize some performance data from static analysis. Signed-off-by: Jiong Wang <jiong.wang@netronome.com> Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
65 lines
2.5 KiB
C
65 lines
2.5 KiB
C
// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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/*
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* Copyright (C) 2018 Netronome Systems, Inc.
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*
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* This software is dual licensed under the GNU General License Version 2,
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* June 1991 as shown in the file COPYING in the top-level directory of this
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* source tree or the BSD 2-Clause License provided below. You have the
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* option to license this software under the complete terms of either license.
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*
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* The BSD 2-Clause License:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* 1. Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __BPF_TOOL_XLATED_DUMPER_H
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#define __BPF_TOOL_XLATED_DUMPER_H
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#define SYM_MAX_NAME 256
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struct kernel_sym {
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unsigned long address;
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char name[SYM_MAX_NAME];
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};
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struct dump_data {
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unsigned long address_call_base;
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struct kernel_sym *sym_mapping;
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__u32 sym_count;
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char scratch_buff[SYM_MAX_NAME];
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};
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void kernel_syms_load(struct dump_data *dd);
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void kernel_syms_destroy(struct dump_data *dd);
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void dump_xlated_json(struct dump_data *dd, void *buf, unsigned int len,
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bool opcodes);
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void dump_xlated_plain(struct dump_data *dd, void *buf, unsigned int len,
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bool opcodes);
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void dump_xlated_for_graph(struct dump_data *dd, void *buf, void *buf_end,
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unsigned int start_index);
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#endif
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