enable tun/tap/iptables

hc

2024-05-10 ee930fffee469d076998274a2ca55e13dc1efb67

 kernel/scripts/gdb/linux/genpd.py
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@@ -5,7 +5,7 @@
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 import gdb
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 import sys
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-from linux.utils import CachedType
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+from linux.utils import CachedType, gdb_eval_or_none
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 from linux.lists import list_for_each_entry
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 generic_pm_domain_type = CachedType('struct generic_pm_domain')
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@@ -70,6 +70,8 @@
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             gdb.write('    %-50s  %s\n' % (kobj_path, rtpm_status_str(dev)))
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     def invoke(self, arg, from_tty):
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+        if gdb_eval_or_none("&gpd_list") is None:
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+            raise gdb.GdbError("No power domain(s) registered")
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         gdb.write('domain                          status          children\n');
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         gdb.write('    /device                                             runtime status\n');
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         gdb.write('----------------------------------------------------------------------\n');