forked from mirrors/linux
6620999f0d
vmap_area does not exist on no-MMU, therefore the GDB scripts fail to
load:
Traceback (most recent call last):
File "<...>/vmlinux-gdb.py", line 51, in <module>
import linux.vmalloc
File "<...>/scripts/gdb/linux/vmalloc.py", line 14, in <module>
vmap_area_ptr_type = vmap_area_type.get_type().pointer()
^^^^^^^^^^^^^^^^^^^^^^^^^
File "<...>/scripts/gdb/linux/utils.py", line 28, in get_type
self._type = gdb.lookup_type(self._name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^
gdb.error: No struct type named vmap_area.
To fix this, disable the command and add an informative error message if
CONFIG_MMU is not defined, following the example of lx-slabinfo.
Link: https://lkml.kernel.org/r/20231031202235.2655333-2-ben.wolsieffer@hefring.com
Fixes: 852622bf36 ("scripts/gdb/vmalloc: add vmallocinfo support")
Signed-off-by: Ben Wolsieffer <ben.wolsieffer@hefring.com>
Cc: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Kieran Bingham <kbingham@kernel.org>
Cc: Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
161 lines
4.1 KiB
Python
161 lines
4.1 KiB
Python
/*
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* gdb helper commands and functions for Linux kernel debugging
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*
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* Kernel constants derived from include files.
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*
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* Copyright (c) 2016 Linaro Ltd
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*
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* Authors:
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* Kieran Bingham <kieran.bingham@linaro.org>
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*
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* This work is licensed under the terms of the GNU GPL version 2.
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*
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*/
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#include <linux/clk-provider.h>
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#include <linux/fs.h>
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#include <linux/hrtimer.h>
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#include <linux/irq.h>
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#include <linux/mount.h>
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#include <linux/of_fdt.h>
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#include <linux/page_ext.h>
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#include <linux/radix-tree.h>
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#include <linux/slab.h>
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#include <linux/threads.h>
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#include <linux/vmalloc.h>
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/* We need to stringify expanded macros so that they can be parsed */
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#define STRING(x) #x
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#define XSTRING(x) STRING(x)
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#define LX_VALUE(x) LX_##x = x
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#define LX_GDBPARSED(x) LX_##x = gdb.parse_and_eval(XSTRING(x))
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/*
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* IS_ENABLED generates (a || b) which is not compatible with python
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* We can only switch on configuration items we know are available
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* Therefore - IS_BUILTIN() is more appropriate
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*/
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#define LX_CONFIG(x) LX_##x = IS_BUILTIN(x)
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/* The build system will take care of deleting everything above this marker */
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<!-- end-c-headers -->
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import gdb
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LX_CONFIG(CONFIG_DEBUG_INFO_REDUCED)
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/* linux/clk-provider.h */
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if IS_BUILTIN(CONFIG_COMMON_CLK):
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LX_GDBPARSED(CLK_GET_RATE_NOCACHE)
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/* linux/fs.h */
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LX_GDBPARSED(SB_RDONLY)
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LX_GDBPARSED(SB_SYNCHRONOUS)
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LX_GDBPARSED(SB_MANDLOCK)
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LX_GDBPARSED(SB_DIRSYNC)
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LX_GDBPARSED(SB_NOATIME)
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LX_GDBPARSED(SB_NODIRATIME)
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/* linux/htimer.h */
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LX_GDBPARSED(hrtimer_resolution)
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/* linux/irq.h */
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LX_GDBPARSED(IRQD_LEVEL)
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LX_GDBPARSED(IRQ_HIDDEN)
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/* linux/module.h */
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if IS_BUILTIN(CONFIG_MODULES):
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LX_GDBPARSED(MOD_TEXT)
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LX_GDBPARSED(MOD_DATA)
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LX_GDBPARSED(MOD_RODATA)
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LX_GDBPARSED(MOD_RO_AFTER_INIT)
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/* linux/mount.h */
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LX_VALUE(MNT_NOSUID)
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LX_VALUE(MNT_NODEV)
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LX_VALUE(MNT_NOEXEC)
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LX_VALUE(MNT_NOATIME)
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LX_VALUE(MNT_NODIRATIME)
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LX_VALUE(MNT_RELATIME)
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/* linux/threads.h */
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LX_VALUE(NR_CPUS)
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/* linux/of_fdt.h> */
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LX_VALUE(OF_DT_HEADER)
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/* linux/radix-tree.h */
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LX_GDBPARSED(RADIX_TREE_ENTRY_MASK)
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LX_GDBPARSED(RADIX_TREE_INTERNAL_NODE)
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LX_GDBPARSED(RADIX_TREE_MAP_SIZE)
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LX_GDBPARSED(RADIX_TREE_MAP_SHIFT)
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LX_GDBPARSED(RADIX_TREE_MAP_MASK)
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/* linux/vmalloc.h */
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LX_VALUE(VM_IOREMAP)
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LX_VALUE(VM_ALLOC)
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LX_VALUE(VM_MAP)
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LX_VALUE(VM_USERMAP)
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LX_VALUE(VM_DMA_COHERENT)
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/* linux/page_ext.h */
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if IS_BUILTIN(CONFIG_PAGE_OWNER):
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LX_GDBPARSED(PAGE_EXT_OWNER)
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LX_GDBPARSED(PAGE_EXT_OWNER_ALLOCATED)
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/* linux/slab.h */
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LX_GDBPARSED(SLAB_RED_ZONE)
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LX_GDBPARSED(SLAB_POISON)
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LX_GDBPARSED(SLAB_KMALLOC)
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LX_GDBPARSED(SLAB_HWCACHE_ALIGN)
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LX_GDBPARSED(SLAB_CACHE_DMA)
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LX_GDBPARSED(SLAB_CACHE_DMA32)
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LX_GDBPARSED(SLAB_STORE_USER)
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LX_GDBPARSED(SLAB_PANIC)
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/* Kernel Configs */
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LX_CONFIG(CONFIG_GENERIC_CLOCKEVENTS)
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LX_CONFIG(CONFIG_GENERIC_CLOCKEVENTS_BROADCAST)
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LX_CONFIG(CONFIG_HIGH_RES_TIMERS)
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LX_CONFIG(CONFIG_NR_CPUS)
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LX_CONFIG(CONFIG_OF)
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LX_CONFIG(CONFIG_TICK_ONESHOT)
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LX_CONFIG(CONFIG_GENERIC_IRQ_SHOW_LEVEL)
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LX_CONFIG(CONFIG_X86_LOCAL_APIC)
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LX_CONFIG(CONFIG_SMP)
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LX_CONFIG(CONFIG_X86_THERMAL_VECTOR)
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LX_CONFIG(CONFIG_X86_MCE_THRESHOLD)
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LX_CONFIG(CONFIG_X86_MCE_AMD)
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LX_CONFIG(CONFIG_X86_MCE)
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LX_CONFIG(CONFIG_X86_IO_APIC)
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LX_CONFIG(CONFIG_HAVE_KVM)
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LX_CONFIG(CONFIG_NUMA)
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LX_CONFIG(CONFIG_ARM64)
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LX_CONFIG(CONFIG_ARM64_4K_PAGES)
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LX_CONFIG(CONFIG_ARM64_16K_PAGES)
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LX_CONFIG(CONFIG_ARM64_64K_PAGES)
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if IS_BUILTIN(CONFIG_ARM64):
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LX_VALUE(CONFIG_ARM64_PA_BITS)
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LX_VALUE(CONFIG_ARM64_VA_BITS)
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LX_VALUE(CONFIG_ARM64_PAGE_SHIFT)
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LX_VALUE(CONFIG_ARCH_FORCE_MAX_ORDER)
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LX_CONFIG(CONFIG_SPARSEMEM)
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LX_CONFIG(CONFIG_SPARSEMEM_EXTREME)
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LX_CONFIG(CONFIG_SPARSEMEM_VMEMMAP)
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LX_CONFIG(CONFIG_KASAN)
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LX_CONFIG(CONFIG_KASAN_GENERIC)
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LX_CONFIG(CONFIG_KASAN_SW_TAGS)
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LX_CONFIG(CONFIG_KASAN_HW_TAGS)
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if IS_BUILTIN(CONFIG_KASAN_GENERIC) or IS_BUILTIN(CONFIG_KASAN_SW_TAGS):
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LX_VALUE(CONFIG_KASAN_SHADOW_OFFSET)
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LX_CONFIG(CONFIG_VMAP_STACK)
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if IS_BUILTIN(CONFIG_NUMA):
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LX_VALUE(CONFIG_NODES_SHIFT)
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LX_CONFIG(CONFIG_DEBUG_VIRTUAL)
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LX_CONFIG(CONFIG_STACKDEPOT)
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LX_CONFIG(CONFIG_PAGE_OWNER)
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LX_CONFIG(CONFIG_SLUB_DEBUG)
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LX_CONFIG(CONFIG_SLAB_FREELIST_HARDENED)
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LX_CONFIG(CONFIG_MMU)
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