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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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import gdbimport sys
from linux.utils import CachedType, gdb_eval_or_nonefrom 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'])
child_names = [] for link in list_for_each_entry( genpd['parent_links'], device_link_type.get_type().pointer(), 'parent_node'): child_names.append(link['child']['name'])
gdb.write('%-30s %-15s %s\n' % ( genpd['name'].string(), status_string, ', '.join(child_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): if gdb_eval_or_none("&gpd_list") is None: raise gdb.GdbError("No power domain(s) registered") gdb.write('domain status children\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()