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