# SPDX-License-Identifier: GPL-2.0## Copyright (c) 2023 MediaTek Inc.## Authors:#  Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com># import gdbimport refrom linux import lists, utils, stackdepot, constants, mm 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):        vmap_area_list = gdb.parse_and_eval('vmap_area_list')        for vmap_area in lists.list_for_each_entry(vmap_area_list, 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()