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1 | # SPDX-License-Identifier: GPL-2.0 |
2 | # | |
3 | # Copyright (c) 2023 MediaTek Inc. | |
4 | # | |
5 | # Authors: | |
6 | # Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com> | |
7 | # | |
8 | ||
9 | import gdb | |
10 | import re | |
11 | from linux import lists, utils, stackdepot, constants, mm | |
12 | ||
6620999f BW |
13 | if constants.LX_CONFIG_MMU: |
14 | vmap_area_type = utils.CachedType('struct vmap_area') | |
15 | vmap_area_ptr_type = vmap_area_type.get_type().pointer() | |
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16 | |
17 | def is_vmalloc_addr(x): | |
18 | pg_ops = mm.page_ops().ops | |
19 | addr = pg_ops.kasan_reset_tag(x) | |
20 | return addr >= pg_ops.VMALLOC_START and addr < pg_ops.VMALLOC_END | |
21 | ||
22 | class LxVmallocInfo(gdb.Command): | |
23 | """Show vmallocinfo""" | |
24 | ||
25 | def __init__(self): | |
26 | super(LxVmallocInfo, self).__init__("lx-vmallocinfo", gdb.COMMAND_DATA) | |
27 | ||
28 | def invoke(self, arg, from_tty): | |
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29 | if not constants.LX_CONFIG_MMU: |
30 | raise gdb.GdbError("Requires MMU support") | |
31 | ||
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32 | nr_vmap_nodes = gdb.parse_and_eval('nr_vmap_nodes') |
33 | for i in range(0, nr_vmap_nodes): | |
34 | vn = gdb.parse_and_eval('&vmap_nodes[%d]' % i) | |
35 | for vmap_area in lists.list_for_each_entry(vn['busy']['head'], vmap_area_ptr_type, "list"): | |
36 | if not vmap_area['vm']: | |
37 | gdb.write("0x%x-0x%x %10d vm_map_ram\n" % (vmap_area['va_start'], vmap_area['va_end'], | |
38 | vmap_area['va_end'] - vmap_area['va_start'])) | |
39 | continue | |
40 | v = vmap_area['vm'] | |
41 | gdb.write("0x%x-0x%x %10d" % (v['addr'], v['addr'] + v['size'], v['size'])) | |
42 | if v['caller']: | |
43 | gdb.write(" %s" % str(v['caller']).split(' ')[-1]) | |
44 | if v['nr_pages']: | |
45 | gdb.write(" pages=%d" % v['nr_pages']) | |
46 | if v['phys_addr']: | |
47 | gdb.write(" phys=0x%x" % v['phys_addr']) | |
48 | if v['flags'] & constants.LX_VM_IOREMAP: | |
49 | gdb.write(" ioremap") | |
50 | if v['flags'] & constants.LX_VM_ALLOC: | |
51 | gdb.write(" vmalloc") | |
52 | if v['flags'] & constants.LX_VM_MAP: | |
53 | gdb.write(" vmap") | |
54 | if v['flags'] & constants.LX_VM_USERMAP: | |
55 | gdb.write(" user") | |
56 | if v['flags'] & constants.LX_VM_DMA_COHERENT: | |
57 | gdb.write(" dma-coherent") | |
58 | if is_vmalloc_addr(v['pages']): | |
59 | gdb.write(" vpages") | |
60 | gdb.write("\n") | |
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61 | |
62 | LxVmallocInfo() |