| # 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() |