| # SPDX-License-Identifier: GPL-2.0 | |
| # | |
| # Copyright (c) 2023 MediaTek Inc. | |
| # | |
| # Authors: | |
| # Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com> | |
| # | |
| import gdb | |
| import re | |
| from linux import lists, utils, stackdepot, constants, mm | |
| if constants.LX_CONFIG_MMU: | |
| vmap_area_type = utils.CachedType('struct vmap_area') | |
| vmap_area_ptr_type = vmap_area_type.get_type().pointer() | |
| def is_vmalloc_addr(x): | |
| pg_ops = mm.page_ops().ops | |
| addr = pg_ops.kasan_reset_tag(x) | |
| return addr >= pg_ops.VMALLOC_START and addr < pg_ops.VMALLOC_END | |
| class LxVmallocInfo(gdb.Command): | |
| """Show vmallocinfo""" | |
| def __init__(self): | |
| super(LxVmallocInfo, self).__init__("lx-vmallocinfo", gdb.COMMAND_DATA) | |
| def invoke(self, arg, from_tty): | |
| if not constants.LX_CONFIG_MMU: | |
| raise gdb.GdbError("Requires MMU support") | |
| nr_vmap_nodes = gdb.parse_and_eval('nr_vmap_nodes') | |
| for i in range(0, nr_vmap_nodes): | |
| vn = gdb.parse_and_eval('&vmap_nodes[%d]' % i) | |
| for vmap_area in lists.list_for_each_entry(vn['busy']['head'], vmap_area_ptr_type, "list"): | |
| if not vmap_area['vm']: | |
| gdb.write("0x%x-0x%x %10d vm_map_ram\n" % (vmap_area['va_start'], vmap_area['va_end'], | |
| vmap_area['va_end'] - vmap_area['va_start'])) | |
| continue | |
| v = vmap_area['vm'] | |
| gdb.write("0x%x-0x%x %10d" % (v['addr'], v['addr'] + v['size'], v['size'])) | |
| if v['caller']: | |
| gdb.write(" %s" % str(v['caller']).split(' ')[-1]) | |
| if v['nr_pages']: | |
| gdb.write(" pages=%d" % v['nr_pages']) | |
| if v['phys_addr']: | |
| gdb.write(" phys=0x%x" % v['phys_addr']) | |
| if v['flags'] & constants.LX_VM_IOREMAP: | |
| gdb.write(" ioremap") | |
| if v['flags'] & constants.LX_VM_ALLOC: | |
| gdb.write(" vmalloc") | |
| if v['flags'] & constants.LX_VM_MAP: | |
| gdb.write(" vmap") | |
| if v['flags'] & constants.LX_VM_USERMAP: | |
| gdb.write(" user") | |
| if v['flags'] & constants.LX_VM_DMA_COHERENT: | |
| gdb.write(" dma-coherent") | |
| if is_vmalloc_addr(v['pages']): | |
| gdb.write(" vpages") | |
| gdb.write("\n") | |
| LxVmallocInfo() |