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, co
12
13 if constants.LX_CONFIG_MMU:
14 vmap_area_type = utils.CachedType('struct
15 vmap_area_ptr_type = vmap_area_type.get_ty
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 ad
21
22 class LxVmallocInfo(gdb.Command):
23 """Show vmallocinfo"""
24
25 def __init__(self):
26 super(LxVmallocInfo, self).__init__("l
27
28 def invoke(self, arg, from_tty):
29 if not constants.LX_CONFIG_MMU:
30 raise gdb.GdbError("Requires MMU s
31
32 nr_vmap_nodes = gdb.parse_and_eval('nr
33 for i in range(0, nr_vmap_nodes):
34 vn = gdb.parse_and_eval('&vmap_nod
35 for vmap_area in lists.list_for_ea
36 if not vmap_area['vm']:
37 gdb.write("0x%x-0x%x %10d
38 vmap_area['va_end'] -
39 continue
40 v = vmap_area['vm']
41 gdb.write("0x%x-0x%x %10d" % (
42 if v['caller']:
43 gdb.write(" %s" % str(v['c
44 if v['nr_pages']:
45 gdb.write(" pages=%d" % v[
46 if v['phys_addr']:
47 gdb.write(" phys=0x%x" % v
48 if v['flags'] & constants.LX_V
49 gdb.write(" ioremap")
50 if v['flags'] & constants.LX_V
51 gdb.write(" vmalloc")
52 if v['flags'] & constants.LX_V
53 gdb.write(" vmap")
54 if v['flags'] & constants.LX_V
55 gdb.write(" user")
56 if v['flags'] & constants.LX_V
57 gdb.write(" dma-coherent")
58 if is_vmalloc_addr(v['pages'])
59 gdb.write(" vpages")
60 gdb.write("\n")
61
62 LxVmallocInfo()
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