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-rw-r--r--scripts/gdb/linux/Makefile4
-rw-r--r--scripts/gdb/linux/cpus.py37
-rw-r--r--scripts/gdb/linux/interrupts.py6
-rw-r--r--scripts/gdb/linux/kasan.py44
-rw-r--r--scripts/gdb/linux/mm.py23
-rw-r--r--scripts/gdb/linux/modules.py3
-rw-r--r--scripts/gdb/linux/pgtable.py4
-rw-r--r--scripts/gdb/linux/proc.py4
-rw-r--r--scripts/gdb/linux/rbtree.py12
-rw-r--r--scripts/gdb/linux/stackdepot.py35
-rw-r--r--scripts/gdb/linux/symbols.py85
-rw-r--r--scripts/gdb/linux/tasks.py2
-rw-r--r--scripts/gdb/linux/timerlist.py31
-rw-r--r--scripts/gdb/linux/utils.py59
14 files changed, 275 insertions, 74 deletions
diff --git a/scripts/gdb/linux/Makefile b/scripts/gdb/linux/Makefile
index 48941faa6ea6..fcd32fcf3ae0 100644
--- a/scripts/gdb/linux/Makefile
+++ b/scripts/gdb/linux/Makefile
@@ -2,10 +2,10 @@
ifdef building_out_of_srctree
-symlinks := $(patsubst $(srctree)/$(src)/%,%,$(wildcard $(srctree)/$(src)/*.py))
+symlinks := $(patsubst $(src)/%,%,$(wildcard $(src)/*.py))
quiet_cmd_symlink = SYMLINK $@
- cmd_symlink = ln -fsn $(patsubst $(obj)/%,$(abspath $(srctree))/$(src)/%,$@) $@
+ cmd_symlink = ln -fsn $(patsubst $(obj)/%,$(abspath $(src))/%,$@) $@
always-y += $(symlinks)
$(addprefix $(obj)/, $(symlinks)): FORCE
diff --git a/scripts/gdb/linux/cpus.py b/scripts/gdb/linux/cpus.py
index cba589e5b57d..6edf4ef61636 100644
--- a/scripts/gdb/linux/cpus.py
+++ b/scripts/gdb/linux/cpus.py
@@ -26,11 +26,7 @@ def get_current_cpu():
if utils.get_gdbserver_type() == utils.GDBSERVER_QEMU:
return gdb.selected_thread().num - 1
elif utils.get_gdbserver_type() == utils.GDBSERVER_KGDB:
- tid = gdb.selected_thread().ptid[2]
- if tid > (0x100000000 - MAX_CPUS - 2):
- return 0x100000000 - tid - 2
- else:
- return tasks.get_thread_info(tasks.get_task_by_pid(tid))['cpu']
+ return gdb.parse_and_eval("kgdb_active.counter")
else:
raise gdb.GdbError("Sorry, obtaining the current CPU is not yet "
"supported with this gdb server.")
@@ -50,7 +46,7 @@ def per_cpu(var_ptr, cpu):
# !CONFIG_SMP case
offset = 0
pointer = var_ptr.cast(utils.get_long_type()) + offset
- return pointer.cast(var_ptr.type).dereference()
+ return pointer.cast(var_ptr.type)
cpu_mask = {}
@@ -145,20 +141,37 @@ LxCpus()
class PerCpu(gdb.Function):
"""Return per-cpu variable.
-$lx_per_cpu("VAR"[, CPU]): Return the per-cpu variable called VAR for the
+$lx_per_cpu(VAR[, CPU]): Return the per-cpu variable called VAR for the
given CPU number. If CPU is omitted, the CPU of the current context is used.
Note that VAR has to be quoted as string."""
def __init__(self):
super(PerCpu, self).__init__("lx_per_cpu")
- def invoke(self, var_name, cpu=-1):
- var_ptr = gdb.parse_and_eval("&" + var_name.string())
- return per_cpu(var_ptr, cpu)
+ def invoke(self, var, cpu=-1):
+ return per_cpu(var.address, cpu).dereference()
PerCpu()
+
+class PerCpuPtr(gdb.Function):
+ """Return per-cpu pointer.
+
+$lx_per_cpu_ptr(VAR[, CPU]): Return the per-cpu pointer called VAR for the
+given CPU number. If CPU is omitted, the CPU of the current context is used.
+Note that VAR has to be quoted as string."""
+
+ def __init__(self):
+ super(PerCpuPtr, self).__init__("lx_per_cpu_ptr")
+
+ def invoke(self, var, cpu=-1):
+ return per_cpu(var, cpu)
+
+
+PerCpuPtr()
+
+
def get_current_task(cpu):
task_ptr_type = task_type.get_type().pointer()
@@ -169,10 +182,10 @@ def get_current_task(cpu):
var_ptr = gdb.parse_and_eval("(struct task_struct *)cpu_tasks[0].task")
return var_ptr.dereference()
else:
- var_ptr = gdb.parse_and_eval("&pcpu_hot.current_task")
+ var_ptr = gdb.parse_and_eval("&current_task")
return per_cpu(var_ptr, cpu).dereference()
elif utils.is_target_arch("aarch64"):
- current_task_addr = gdb.parse_and_eval("$SP_EL0")
+ current_task_addr = gdb.parse_and_eval("(unsigned long)$SP_EL0")
if (current_task_addr >> 63) != 0:
current_task = current_task_addr.cast(task_ptr_type)
return current_task.dereference()
diff --git a/scripts/gdb/linux/interrupts.py b/scripts/gdb/linux/interrupts.py
index 66ae5c7690cf..616a5f26377a 100644
--- a/scripts/gdb/linux/interrupts.py
+++ b/scripts/gdb/linux/interrupts.py
@@ -37,7 +37,7 @@ def show_irq_desc(prec, irq):
any_count = 0
if desc['kstat_irqs']:
for cpu in cpus.each_online_cpu():
- any_count += cpus.per_cpu(desc['kstat_irqs'], cpu)
+ any_count += cpus.per_cpu(desc['kstat_irqs'], cpu)['cnt']
if (desc['action'] == 0 or irq_desc_is_chained(desc)) and any_count == 0:
return text;
@@ -45,7 +45,7 @@ def show_irq_desc(prec, irq):
text += "%*d: " % (prec, irq)
for cpu in cpus.each_online_cpu():
if desc['kstat_irqs']:
- count = cpus.per_cpu(desc['kstat_irqs'], cpu)
+ count = cpus.per_cpu(desc['kstat_irqs'], cpu)['cnt']
else:
count = 0
text += "%10u" % (count)
@@ -177,7 +177,7 @@ def arm_common_show_interrupts(prec):
if desc == 0:
continue
for cpu in cpus.each_online_cpu():
- text += "%10u" % (cpus.per_cpu(desc['kstat_irqs'], cpu))
+ text += "%10u" % (cpus.per_cpu(desc['kstat_irqs'], cpu)['cnt'])
text += " %s" % (ipi_types[ipi].string())
text += "\n"
return text
diff --git a/scripts/gdb/linux/kasan.py b/scripts/gdb/linux/kasan.py
new file mode 100644
index 000000000000..56730b3fde0b
--- /dev/null
+++ b/scripts/gdb/linux/kasan.py
@@ -0,0 +1,44 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Copyright 2024 Canonical Ltd.
+#
+# Authors:
+# Kuan-Ying Lee <kuan-ying.lee@canonical.com>
+#
+
+import gdb
+from linux import constants, mm
+
+def help():
+ t = """Usage: lx-kasan_mem_to_shadow [Hex memory addr]
+ Example:
+ lx-kasan_mem_to_shadow 0xffff000008eca008\n"""
+ gdb.write("Unrecognized command\n")
+ raise gdb.GdbError(t)
+
+class KasanMemToShadow(gdb.Command):
+ """Translate memory address to kasan shadow address"""
+
+ p_ops = None
+
+ def __init__(self):
+ if constants.LX_CONFIG_KASAN_GENERIC or constants.LX_CONFIG_KASAN_SW_TAGS:
+ super(KasanMemToShadow, self).__init__("lx-kasan_mem_to_shadow", gdb.COMMAND_SUPPORT)
+
+ def invoke(self, args, from_tty):
+ if not constants.LX_CONFIG_KASAN_GENERIC or constants.LX_CONFIG_KASAN_SW_TAGS:
+ raise gdb.GdbError('CONFIG_KASAN_GENERIC or CONFIG_KASAN_SW_TAGS is not set')
+
+ argv = gdb.string_to_argv(args)
+ if len(argv) == 1:
+ if self.p_ops is None:
+ self.p_ops = mm.page_ops().ops
+ addr = int(argv[0], 16)
+ shadow_addr = self.kasan_mem_to_shadow(addr)
+ gdb.write('shadow addr: 0x%x\n' % shadow_addr)
+ else:
+ help()
+ def kasan_mem_to_shadow(self, addr):
+ return (addr >> self.p_ops.KASAN_SHADOW_SCALE_SHIFT) + self.p_ops.KASAN_SHADOW_OFFSET
+
+KasanMemToShadow()
diff --git a/scripts/gdb/linux/mm.py b/scripts/gdb/linux/mm.py
index 515730fd4c9d..7571aebbe650 100644
--- a/scripts/gdb/linux/mm.py
+++ b/scripts/gdb/linux/mm.py
@@ -33,7 +33,7 @@ class aarch64_page_ops():
def __init__(self):
self.SUBSECTION_SHIFT = 21
self.SEBSECTION_SIZE = 1 << self.SUBSECTION_SHIFT
- self.MODULES_VSIZE = 128 * 1024 * 1024
+ self.MODULES_VSIZE = 2 * 1024 * 1024 * 1024
if constants.LX_CONFIG_ARM64_64K_PAGES:
self.SECTION_SIZE_BITS = 29
@@ -47,8 +47,13 @@ class aarch64_page_ops():
self.VA_BITS = constants.LX_CONFIG_ARM64_VA_BITS
if self.VA_BITS > 48:
- self.VA_BITS_MIN = 48
- self.vabits_actual = gdb.parse_and_eval('vabits_actual')
+ if constants.LX_CONFIG_ARM64_16K_PAGES:
+ self.VA_BITS_MIN = 47
+ else:
+ self.VA_BITS_MIN = 48
+ tcr_el1 = gdb.execute("info registers $TCR_EL1", to_string=True)
+ tcr_el1 = int(tcr_el1.split()[1], 16)
+ self.vabits_actual = 64 - ((tcr_el1 >> 16) & 63)
else:
self.VA_BITS_MIN = self.VA_BITS
self.vabits_actual = self.VA_BITS
@@ -59,9 +64,9 @@ class aarch64_page_ops():
if str(constants.LX_CONFIG_ARCH_FORCE_MAX_ORDER).isdigit():
self.MAX_ORDER = constants.LX_CONFIG_ARCH_FORCE_MAX_ORDER
else:
- self.MAX_ORDER = 11
+ self.MAX_ORDER = 10
- self.MAX_ORDER_NR_PAGES = 1 << (self.MAX_ORDER - 1)
+ self.MAX_ORDER_NR_PAGES = 1 << (self.MAX_ORDER)
self.PFN_SECTION_SHIFT = self.SECTION_SIZE_BITS - self.PAGE_SHIFT
self.NR_MEM_SECTIONS = 1 << self.SECTIONS_SHIFT
self.PAGES_PER_SECTION = 1 << self.PFN_SECTION_SHIFT
@@ -89,10 +94,10 @@ class aarch64_page_ops():
self.MODULES_VADDR = self._PAGE_END(self.VA_BITS_MIN)
self.MODULES_END = self.MODULES_VADDR + self.MODULES_VSIZE
- self.VMEMMAP_SHIFT = (self.PAGE_SHIFT - self.STRUCT_PAGE_MAX_SHIFT)
- self.VMEMMAP_SIZE = ((self._PAGE_END(self.VA_BITS_MIN) - self.PAGE_OFFSET) >> self.VMEMMAP_SHIFT)
- self.VMEMMAP_START = (-(1 << (self.VA_BITS - self.VMEMMAP_SHIFT))) & 0xffffffffffffffff
- self.VMEMMAP_END = self.VMEMMAP_START + self.VMEMMAP_SIZE
+ self.VMEMMAP_RANGE = self._PAGE_END(self.VA_BITS_MIN) - self.PAGE_OFFSET
+ self.VMEMMAP_SIZE = (self.VMEMMAP_RANGE >> self.PAGE_SHIFT) * self.struct_page_size
+ self.VMEMMAP_END = (-(1 * 1024 * 1024 * 1024)) & 0xffffffffffffffff
+ self.VMEMMAP_START = self.VMEMMAP_END - self.VMEMMAP_SIZE
self.VMALLOC_START = self.MODULES_END
self.VMALLOC_END = self.VMEMMAP_START - 256 * 1024 * 1024
diff --git a/scripts/gdb/linux/modules.py b/scripts/gdb/linux/modules.py
index 298dfcc25eae..fa15f872ddbe 100644
--- a/scripts/gdb/linux/modules.py
+++ b/scripts/gdb/linux/modules.py
@@ -19,6 +19,9 @@ from linux import cpus, utils, lists, constants
module_type = utils.CachedType("struct module")
+def has_modules():
+ return utils.gdb_eval_or_none("modules") is not None
+
def module_list():
global module_type
modules = utils.gdb_eval_or_none("modules")
diff --git a/scripts/gdb/linux/pgtable.py b/scripts/gdb/linux/pgtable.py
index 30d837f3dfae..09aac2421fb8 100644
--- a/scripts/gdb/linux/pgtable.py
+++ b/scripts/gdb/linux/pgtable.py
@@ -29,11 +29,9 @@ def page_mask(level=1):
raise Exception(f'Unknown page level: {level}')
-#page_offset_base in case CONFIG_DYNAMIC_MEMORY_LAYOUT is disabled
-POB_NO_DYNAMIC_MEM_LAYOUT = '0xffff888000000000'
def _page_offset_base():
pob_symbol = gdb.lookup_global_symbol('page_offset_base')
- pob = pob_symbol.name if pob_symbol else POB_NO_DYNAMIC_MEM_LAYOUT
+ pob = pob_symbol.name
return gdb.parse_and_eval(pob)
diff --git a/scripts/gdb/linux/proc.py b/scripts/gdb/linux/proc.py
index 43c687e7a69d..65dd1bd12964 100644
--- a/scripts/gdb/linux/proc.py
+++ b/scripts/gdb/linux/proc.py
@@ -18,6 +18,7 @@ from linux import utils
from linux import tasks
from linux import lists
from linux import vfs
+from linux import rbtree
from struct import *
@@ -172,8 +173,7 @@ values of that process namespace"""
gdb.write("{:^18} {:^15} {:>9} {} {} options\n".format(
"mount", "super_block", "devname", "pathname", "fstype"))
- for mnt in lists.list_for_each_entry(namespace['list'],
- mount_ptr_type, "mnt_list"):
+ for mnt in rbtree.rb_inorder_for_each_entry(namespace['mounts'], mount_ptr_type, "mnt_node"):
devname = mnt['mnt_devname'].string()
devname = devname if devname else "none"
diff --git a/scripts/gdb/linux/rbtree.py b/scripts/gdb/linux/rbtree.py
index fe462855eefd..fcbcc5f4153c 100644
--- a/scripts/gdb/linux/rbtree.py
+++ b/scripts/gdb/linux/rbtree.py
@@ -9,6 +9,18 @@ from linux import utils
rb_root_type = utils.CachedType("struct rb_root")
rb_node_type = utils.CachedType("struct rb_node")
+def rb_inorder_for_each(root):
+ def inorder(node):
+ if node:
+ yield from inorder(node['rb_left'])
+ yield node
+ yield from inorder(node['rb_right'])
+
+ yield from inorder(root['rb_node'])
+
+def rb_inorder_for_each_entry(root, gdbtype, member):
+ for node in rb_inorder_for_each(root):
+ yield utils.container_of(node, gdbtype, member)
def rb_first(root):
if root.type == rb_root_type.get_type():
diff --git a/scripts/gdb/linux/stackdepot.py b/scripts/gdb/linux/stackdepot.py
index 0281d9de4b7c..37313a5a51a0 100644
--- a/scripts/gdb/linux/stackdepot.py
+++ b/scripts/gdb/linux/stackdepot.py
@@ -13,6 +13,13 @@ if constants.LX_CONFIG_STACKDEPOT:
stack_record_type = utils.CachedType('struct stack_record')
DEPOT_STACK_ALIGN = 4
+def help():
+ t = """Usage: lx-stack_depot_lookup [Hex handle value]
+ Example:
+ lx-stack_depot_lookup 0x00c80300\n"""
+ gdb.write("Unrecognized command\n")
+ raise gdb.GdbError(t)
+
def stack_depot_fetch(handle):
global DEPOT_STACK_ALIGN
global stack_record_type
@@ -27,14 +34,18 @@ def stack_depot_fetch(handle):
offset = parts['offset'] << DEPOT_STACK_ALIGN
pools_num = gdb.parse_and_eval('pools_num')
- if parts['pool_index'] > pools_num:
+ if handle == 0:
+ raise gdb.GdbError("handle is 0\n")
+
+ pool_index = parts['pool_index_plus_1'] - 1
+ if pool_index >= pools_num:
gdb.write("pool index %d out of bounds (%d) for stack id 0x%08x\n" % (parts['pool_index'], pools_num, handle))
return gdb.Value(0), 0
stack_pools = gdb.parse_and_eval('stack_pools')
try:
- pool = stack_pools[parts['pool_index']]
+ pool = stack_pools[pool_index]
stack = (pool + gdb.Value(offset).cast(utils.get_size_t_type())).cast(stack_record_type.get_type().pointer())
size = int(stack['size'].cast(utils.get_ulong_type()))
return stack['entries'], size
@@ -53,3 +64,23 @@ def stack_depot_print(handle):
gdb.execute("x /i 0x%x" % (int(entries[i])))
except Exception as e:
gdb.write("%s\n" % e)
+
+class StackDepotLookup(gdb.Command):
+ """Search backtrace by handle"""
+
+ def __init__(self):
+ if constants.LX_CONFIG_STACKDEPOT:
+ super(StackDepotLookup, self).__init__("lx-stack_depot_lookup", gdb.COMMAND_SUPPORT)
+
+ def invoke(self, args, from_tty):
+ if not constants.LX_CONFIG_STACKDEPOT:
+ raise gdb.GdbError('CONFIG_STACKDEPOT is not set')
+
+ argv = gdb.string_to_argv(args)
+ if len(argv) == 1:
+ handle = int(argv[0], 16)
+ stack_depot_print(gdb.Value(handle).cast(utils.get_uint_type()))
+ else:
+ help()
+
+StackDepotLookup()
diff --git a/scripts/gdb/linux/symbols.py b/scripts/gdb/linux/symbols.py
index e8316beb17a7..2332bd8eddf1 100644
--- a/scripts/gdb/linux/symbols.py
+++ b/scripts/gdb/linux/symbols.py
@@ -14,7 +14,9 @@
import gdb
import os
import re
+import struct
+from itertools import count
from linux import modules, utils, constants
@@ -36,23 +38,52 @@ if hasattr(gdb, 'Breakpoint'):
# Disable pagination while reporting symbol (re-)loading.
# The console input is blocked in this context so that we would
# get stuck waiting for the user to acknowledge paged output.
- show_pagination = gdb.execute("show pagination", to_string=True)
- pagination = show_pagination.endswith("on.\n")
- gdb.execute("set pagination off")
-
- if module_name in cmd.loaded_modules:
- gdb.write("refreshing all symbols to reload module "
- "'{0}'\n".format(module_name))
- cmd.load_all_symbols()
- else:
- cmd.load_module_symbols(module)
-
- # restore pagination state
- gdb.execute("set pagination %s" % ("on" if pagination else "off"))
+ with utils.pagination_off():
+ if module_name in cmd.loaded_modules:
+ gdb.write("refreshing all symbols to reload module "
+ "'{0}'\n".format(module_name))
+ cmd.load_all_symbols()
+ else:
+ cmd.load_module_symbols(module)
return False
+def get_vmcore_s390():
+ with utils.qemu_phy_mem_mode():
+ vmcore_info = 0x0e0c
+ paddr_vmcoreinfo_note = gdb.parse_and_eval("*(unsigned long long *)" +
+ hex(vmcore_info))
+ if paddr_vmcoreinfo_note == 0 or paddr_vmcoreinfo_note & 1:
+ # In the early boot case, extract vm_layout.kaslr_offset from the
+ # vmlinux image in physical memory.
+ if paddr_vmcoreinfo_note == 0:
+ kaslr_offset_phys = 0
+ else:
+ kaslr_offset_phys = paddr_vmcoreinfo_note - 1
+ with utils.pagination_off():
+ gdb.execute("symbol-file {0} -o {1}".format(
+ utils.get_vmlinux(), hex(kaslr_offset_phys)))
+ kaslr_offset = gdb.parse_and_eval("vm_layout.kaslr_offset")
+ return "KERNELOFFSET=" + hex(kaslr_offset)[2:]
+ inferior = gdb.selected_inferior()
+ elf_note = inferior.read_memory(paddr_vmcoreinfo_note, 12)
+ n_namesz, n_descsz, n_type = struct.unpack(">III", elf_note)
+ desc_paddr = paddr_vmcoreinfo_note + len(elf_note) + n_namesz + 1
+ return gdb.parse_and_eval("(char *)" + hex(desc_paddr)).string()
+
+
+def get_kerneloffset():
+ if utils.is_target_arch('s390'):
+ try:
+ vmcore_str = get_vmcore_s390()
+ except gdb.error as e:
+ gdb.write("{}\n".format(e))
+ return None
+ return utils.parse_vmcore(vmcore_str).kerneloffset
+ return None
+
+
class LxSymbols(gdb.Command):
"""(Re-)load symbols of Linux kernel and currently loaded modules.
@@ -95,10 +126,14 @@ lx-symbols command."""
except gdb.error:
return str(module_addr)
- attrs = sect_attrs['attrs']
- section_name_to_address = {
- attrs[n]['battr']['attr']['name'].string(): attrs[n]['address']
- for n in range(int(sect_attrs['nsections']))}
+ section_name_to_address = {}
+ for i in count():
+ # this is a NULL terminated array
+ if sect_attrs['grp']['bin_attrs'][i] == 0x0:
+ break
+
+ attr = sect_attrs['grp']['bin_attrs'][i].dereference()
+ section_name_to_address[attr['attr']['name'].string()] = attr['private']
textaddr = section_name_to_address.get(".text", module_addr)
args = []
@@ -149,13 +184,14 @@ lx-symbols command."""
saved_states.append({'breakpoint': bp, 'enabled': bp.enabled})
# drop all current symbols and reload vmlinux
- orig_vmlinux = 'vmlinux'
- for obj in gdb.objfiles():
- if (obj.filename.endswith('vmlinux') or
- obj.filename.endswith('vmlinux.debug')):
- orig_vmlinux = obj.filename
+ orig_vmlinux = utils.get_vmlinux()
gdb.execute("symbol-file", to_string=True)
- gdb.execute("symbol-file {0}".format(orig_vmlinux))
+ kerneloffset = get_kerneloffset()
+ if kerneloffset is None:
+ offset_arg = ""
+ else:
+ offset_arg = " -o " + hex(kerneloffset)
+ gdb.execute("symbol-file {0}{1}".format(orig_vmlinux, offset_arg))
self.loaded_modules = []
module_list = modules.module_list()
@@ -178,6 +214,9 @@ lx-symbols command."""
self.load_all_symbols()
+ if not modules.has_modules():
+ return
+
if hasattr(gdb, 'Breakpoint'):
if self.breakpoint is not None:
self.breakpoint.delete()
diff --git a/scripts/gdb/linux/tasks.py b/scripts/gdb/linux/tasks.py
index 6793d6e86e77..62348397c1f5 100644
--- a/scripts/gdb/linux/tasks.py
+++ b/scripts/gdb/linux/tasks.py
@@ -85,7 +85,7 @@ thread_info_type = utils.CachedType("struct thread_info")
def get_thread_info(task):
thread_info_ptr_type = thread_info_type.get_type().pointer()
- if task.type.fields()[0].type == thread_info_type.get_type():
+ if task_type.get_type().fields()[0].type == thread_info_type.get_type():
return task['thread_info']
thread_info = task['stack'].cast(thread_info_ptr_type)
return thread_info.dereference()
diff --git a/scripts/gdb/linux/timerlist.py b/scripts/gdb/linux/timerlist.py
index 64bc87191003..98445671fe83 100644
--- a/scripts/gdb/linux/timerlist.py
+++ b/scripts/gdb/linux/timerlist.py
@@ -87,21 +87,22 @@ def print_cpu(hrtimer_bases, cpu, max_clock_bases):
text += "\n"
if constants.LX_CONFIG_TICK_ONESHOT:
- fmts = [(" .{} : {}", 'nohz_mode'),
- (" .{} : {} nsecs", 'last_tick'),
- (" .{} : {}", 'tick_stopped'),
- (" .{} : {}", 'idle_jiffies'),
- (" .{} : {}", 'idle_calls'),
- (" .{} : {}", 'idle_sleeps'),
- (" .{} : {} nsecs", 'idle_entrytime'),
- (" .{} : {} nsecs", 'idle_waketime'),
- (" .{} : {} nsecs", 'idle_exittime'),
- (" .{} : {} nsecs", 'idle_sleeptime'),
- (" .{}: {} nsecs", 'iowait_sleeptime'),
- (" .{} : {}", 'last_jiffies'),
- (" .{} : {}", 'next_timer'),
- (" .{} : {} nsecs", 'idle_expires')]
- text += "\n".join([s.format(f, ts[f]) for s, f in fmts])
+ TS_FLAG_STOPPED = 1 << 1
+ TS_FLAG_NOHZ = 1 << 4
+ text += f" .{'nohz':15s}: {int(bool(ts['flags'] & TS_FLAG_NOHZ))}\n"
+ text += f" .{'last_tick':15s}: {ts['last_tick']}\n"
+ text += f" .{'tick_stopped':15s}: {int(bool(ts['flags'] & TS_FLAG_STOPPED))}\n"
+ text += f" .{'idle_jiffies':15s}: {ts['idle_jiffies']}\n"
+ text += f" .{'idle_calls':15s}: {ts['idle_calls']}\n"
+ text += f" .{'idle_sleeps':15s}: {ts['idle_sleeps']}\n"
+ text += f" .{'idle_entrytime':15s}: {ts['idle_entrytime']} nsecs\n"
+ text += f" .{'idle_waketime':15s}: {ts['idle_waketime']} nsecs\n"
+ text += f" .{'idle_exittime':15s}: {ts['idle_exittime']} nsecs\n"
+ text += f" .{'idle_sleeptime':15s}: {ts['idle_sleeptime']} nsecs\n"
+ text += f" .{'iowait_sleeptime':15s}: {ts['iowait_sleeptime']} nsecs\n"
+ text += f" .{'last_jiffies':15s}: {ts['last_jiffies']}\n"
+ text += f" .{'next_timer':15s}: {ts['next_timer']}\n"
+ text += f" .{'idle_expires':15s}: {ts['idle_expires']} nsecs\n"
text += "\njiffies: {}\n".format(jiffies)
text += "\n"
diff --git a/scripts/gdb/linux/utils.py b/scripts/gdb/linux/utils.py
index 7d5278d815fa..e11f6f67961a 100644
--- a/scripts/gdb/linux/utils.py
+++ b/scripts/gdb/linux/utils.py
@@ -11,6 +11,11 @@
# This work is licensed under the terms of the GNU GPL version 2.
#
+import contextlib
+import dataclasses
+import re
+import typing
+
import gdb
@@ -195,8 +200,8 @@ def get_gdbserver_type():
def probe_kgdb():
try:
- thread_info = gdb.execute("info thread 2", to_string=True)
- return "shadowCPU0" in thread_info
+ thread_info = gdb.execute("info thread 1", to_string=True)
+ return "shadowCPU" in thread_info
except gdb.error:
return False
@@ -216,3 +221,53 @@ def gdb_eval_or_none(expresssion):
return gdb.parse_and_eval(expresssion)
except gdb.error:
return None
+
+
+@contextlib.contextmanager
+def qemu_phy_mem_mode():
+ connection = gdb.selected_inferior().connection
+ orig = connection.send_packet("qqemu.PhyMemMode")
+ if orig not in b"01":
+ raise gdb.error("Unexpected qemu.PhyMemMode")
+ orig = orig.decode()
+ if connection.send_packet("Qqemu.PhyMemMode:1") != b"OK":
+ raise gdb.error("Failed to set qemu.PhyMemMode")
+ try:
+ yield
+ finally:
+ if connection.send_packet("Qqemu.PhyMemMode:" + orig) != b"OK":
+ raise gdb.error("Failed to restore qemu.PhyMemMode")
+
+
+@dataclasses.dataclass
+class VmCore:
+ kerneloffset: typing.Optional[int]
+
+
+def parse_vmcore(s):
+ match = re.search(r"KERNELOFFSET=([0-9a-f]+)", s)
+ if match is None:
+ kerneloffset = None
+ else:
+ kerneloffset = int(match.group(1), 16)
+ return VmCore(kerneloffset=kerneloffset)
+
+
+def get_vmlinux():
+ vmlinux = 'vmlinux'
+ for obj in gdb.objfiles():
+ if (obj.filename.endswith('vmlinux') or
+ obj.filename.endswith('vmlinux.debug')):
+ vmlinux = obj.filename
+ return vmlinux
+
+
+@contextlib.contextmanager
+def pagination_off():
+ show_pagination = gdb.execute("show pagination", to_string=True)
+ pagination = show_pagination.endswith("on.\n")
+ gdb.execute("set pagination off")
+ try:
+ yield
+ finally:
+ gdb.execute("set pagination %s" % ("on" if pagination else "off"))
generated by cgit (git 2.34.1) at 2025-07-23 18:46:37 +0000