diff options
Diffstat (limited to 'scripts/gdb')
| -rw-r--r-- | scripts/gdb/linux/Makefile | 2 | ||||
| -rw-r--r-- | scripts/gdb/linux/device.py | 182 | ||||
| -rw-r--r-- | scripts/gdb/linux/genpd.py | 83 | ||||
| -rw-r--r-- | scripts/gdb/vmlinux-gdb.py | 2 |
4 files changed, 268 insertions, 1 deletions
diff --git a/scripts/gdb/linux/Makefile b/scripts/gdb/linux/Makefile index 9fd3d8ed731a..124755087510 100644 --- a/scripts/gdb/linux/Makefile +++ b/scripts/gdb/linux/Makefile @@ -1,6 +1,6 @@ # SPDX-License-Identifier: GPL-2.0 -ifneq ($(srctree),.) +ifdef building_out_of_srctree symlinks := $(patsubst $(srctree)/$(src)/%,%,$(wildcard $(srctree)/$(src)/*.py)) diff --git a/scripts/gdb/linux/device.py b/scripts/gdb/linux/device.py new file mode 100644 index 000000000000..16376c5cfec6 --- /dev/null +++ b/scripts/gdb/linux/device.py @@ -0,0 +1,182 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# Copyright (c) NXP 2019 + +import gdb + +from linux.utils import CachedType +from linux.utils import container_of +from linux.lists import list_for_each_entry + + +device_private_type = CachedType('struct device_private') +device_type = CachedType('struct device') + +subsys_private_type = CachedType('struct subsys_private') +kobject_type = CachedType('struct kobject') +kset_type = CachedType('struct kset') + +bus_type = CachedType('struct bus_type') +class_type = CachedType('struct class') + + +def dev_name(dev): + dev_init_name = dev['init_name'] + if dev_init_name: + return dev_init_name.string() + return dev['kobj']['name'].string() + + +def kset_for_each_object(kset): + return list_for_each_entry(kset['list'], + kobject_type.get_type().pointer(), "entry") + + +def for_each_bus(): + for kobj in kset_for_each_object(gdb.parse_and_eval('bus_kset')): + subsys = container_of(kobj, kset_type.get_type().pointer(), 'kobj') + subsys_priv = container_of(subsys, subsys_private_type.get_type().pointer(), 'subsys') + yield subsys_priv['bus'] + + +def for_each_class(): + for kobj in kset_for_each_object(gdb.parse_and_eval('class_kset')): + subsys = container_of(kobj, kset_type.get_type().pointer(), 'kobj') + subsys_priv = container_of(subsys, subsys_private_type.get_type().pointer(), 'subsys') + yield subsys_priv['class'] + + +def get_bus_by_name(name): + for item in for_each_bus(): + if item['name'].string() == name: + return item + raise gdb.GdbError("Can't find bus type {!r}".format(name)) + + +def get_class_by_name(name): + for item in for_each_class(): + if item['name'].string() == name: + return item + raise gdb.GdbError("Can't find device class {!r}".format(name)) + + +klist_type = CachedType('struct klist') +klist_node_type = CachedType('struct klist_node') + + +def klist_for_each(klist): + return list_for_each_entry(klist['k_list'], + klist_node_type.get_type().pointer(), 'n_node') + + +def bus_for_each_device(bus): + for kn in klist_for_each(bus['p']['klist_devices']): + dp = container_of(kn, device_private_type.get_type().pointer(), 'knode_bus') + yield dp['device'] + + +def class_for_each_device(cls): + for kn in klist_for_each(cls['p']['klist_devices']): + dp = container_of(kn, device_private_type.get_type().pointer(), 'knode_class') + yield dp['device'] + + +def device_for_each_child(dev): + for kn in klist_for_each(dev['p']['klist_children']): + dp = container_of(kn, device_private_type.get_type().pointer(), 'knode_parent') + yield dp['device'] + + +def _show_device(dev, level=0, recursive=False): + gdb.write('{}dev {}:\t{}\n'.format('\t' * level, dev_name(dev), dev)) + if recursive: + for child in device_for_each_child(dev): + _show_device(child, level + 1, recursive) + + +class LxDeviceListBus(gdb.Command): + '''Print devices on a bus (or all buses if not specified)''' + + def __init__(self): + super(LxDeviceListBus, self).__init__('lx-device-list-bus', gdb.COMMAND_DATA) + + def invoke(self, arg, from_tty): + if not arg: + for bus in for_each_bus(): + gdb.write('bus {}:\t{}\n'.format(bus['name'].string(), bus)) + for dev in bus_for_each_device(bus): + _show_device(dev, level=1) + else: + bus = get_bus_by_name(arg) + if not bus: + raise gdb.GdbError("Can't find bus {!r}".format(arg)) + for dev in bus_for_each_device(bus): + _show_device(dev) + + +class LxDeviceListClass(gdb.Command): + '''Print devices in a class (or all classes if not specified)''' + + def __init__(self): + super(LxDeviceListClass, self).__init__('lx-device-list-class', gdb.COMMAND_DATA) + + def invoke(self, arg, from_tty): + if not arg: + for cls in for_each_class(): + gdb.write("class {}:\t{}\n".format(cls['name'].string(), cls)) + for dev in class_for_each_device(cls): + _show_device(dev, level=1) + else: + cls = get_class_by_name(arg) + for dev in class_for_each_device(cls): + _show_device(dev) + + +class LxDeviceListTree(gdb.Command): + '''Print a device and its children recursively''' + + def __init__(self): + super(LxDeviceListTree, self).__init__('lx-device-list-tree', gdb.COMMAND_DATA) + + def invoke(self, arg, from_tty): + if not arg: + raise gdb.GdbError('Please provide pointer to struct device') + dev = gdb.parse_and_eval(arg) + if dev.type != device_type.get_type().pointer(): + raise gdb.GdbError('Please provide pointer to struct device') + _show_device(dev, level=0, recursive=True) + + +class LxDeviceFindByBusName(gdb.Function): + '''Find struct device by bus and name (both strings)''' + + def __init__(self): + super(LxDeviceFindByBusName, self).__init__('lx_device_find_by_bus_name') + + def invoke(self, bus, name): + name = name.string() + bus = get_bus_by_name(bus.string()) + for dev in bus_for_each_device(bus): + if dev_name(dev) == name: + return dev + + +class LxDeviceFindByClassName(gdb.Function): + '''Find struct device by class and name (both strings)''' + + def __init__(self): + super(LxDeviceFindByClassName, self).__init__('lx_device_find_by_class_name') + + def invoke(self, cls, name): + name = name.string() + cls = get_class_by_name(cls.string()) + for dev in class_for_each_device(cls): + if dev_name(dev) == name: + return dev + + +LxDeviceListBus() +LxDeviceListClass() +LxDeviceListTree() +LxDeviceFindByBusName() +LxDeviceFindByClassName() diff --git a/scripts/gdb/linux/genpd.py b/scripts/gdb/linux/genpd.py new file mode 100644 index 000000000000..6ca93bd2949e --- /dev/null +++ b/scripts/gdb/linux/genpd.py @@ -0,0 +1,83 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# Copyright (c) NXP 2019 + +import gdb +import sys + +from linux.utils import CachedType +from linux.lists import list_for_each_entry + +generic_pm_domain_type = CachedType('struct generic_pm_domain') +pm_domain_data_type = CachedType('struct pm_domain_data') +device_link_type = CachedType('struct device_link') + + +def kobject_get_path(kobj): + path = kobj['name'].string() + parent = kobj['parent'] + if parent: + path = kobject_get_path(parent) + '/' + path + return path + + +def rtpm_status_str(dev): + if dev['power']['runtime_error']: + return 'error' + if dev['power']['disable_depth']: + return 'unsupported' + _RPM_STATUS_LOOKUP = [ + "active", + "resuming", + "suspended", + "suspending" + ] + return _RPM_STATUS_LOOKUP[dev['power']['runtime_status']] + + +class LxGenPDSummary(gdb.Command): + '''Print genpd summary + +Output is similar to /sys/kernel/debug/pm_genpd/pm_genpd_summary''' + + def __init__(self): + super(LxGenPDSummary, self).__init__('lx-genpd-summary', gdb.COMMAND_DATA) + + def summary_one(self, genpd): + if genpd['status'] == 0: + status_string = 'on' + else: + status_string = 'off-{}'.format(genpd['state_idx']) + + slave_names = [] + for link in list_for_each_entry( + genpd['master_links'], + device_link_type.get_type().pointer(), + 'master_node'): + slave_names.apend(link['slave']['name']) + + gdb.write('%-30s %-15s %s\n' % ( + genpd['name'].string(), + status_string, + ', '.join(slave_names))) + + # Print devices in domain + for pm_data in list_for_each_entry(genpd['dev_list'], + pm_domain_data_type.get_type().pointer(), + 'list_node'): + dev = pm_data['dev'] + kobj_path = kobject_get_path(dev['kobj']) + gdb.write(' %-50s %s\n' % (kobj_path, rtpm_status_str(dev))) + + def invoke(self, arg, from_tty): + gdb.write('domain status slaves\n'); + gdb.write(' /device runtime status\n'); + gdb.write('----------------------------------------------------------------------\n'); + for genpd in list_for_each_entry( + gdb.parse_and_eval('&gpd_list'), + generic_pm_domain_type.get_type().pointer(), + 'gpd_list_node'): + self.summary_one(genpd) + + +LxGenPDSummary() diff --git a/scripts/gdb/vmlinux-gdb.py b/scripts/gdb/vmlinux-gdb.py index eff5a48ac026..4136dc2c59df 100644 --- a/scripts/gdb/vmlinux-gdb.py +++ b/scripts/gdb/vmlinux-gdb.py @@ -35,3 +35,5 @@ else: import linux.constants import linux.timerlist import linux.clk + import linux.genpd + import linux.device |