revert "scripts/gdb/symbols: add specific ko module load command"

Revert 11f9565 ("scripts/gdb/symbols: add specific ko module load
command") due to breakage identified by Johannes Berg in [1].

Fixes: 11f9565 ("scripts/gdb/symbols: add specific ko module load command")
Reported-by: Johannes Berg <johannes@sipsolutions.net>
Closes: https://lkml.kernel.org/r/c44b748307a074d0c250002cdcfe209b8cce93c9.camel@sipsolutions.net [1]
Cc: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Cc: Chinwen Chang <chinwen.chang@mediatek.com>
Cc: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Kieran Bingham <kbingham@kernel.org>
Cc: Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: Qun-Wei Lin <qun-wei.lin@mediatek.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

Author: akpm00

scripts/gdb/linux/symbols.py

@@ -111,12 +111,11 @@ def _section_arguments(self, module, module_addr):
         return "{textaddr} {sections}".format(
             textaddr=textaddr, sections="".join(args))
 
-    def load_module_symbols(self, module, module_file=None):
+    def load_module_symbols(self, module):
         module_name = module['name'].string()
         module_addr = str(module['mem'][constants.LX_MOD_TEXT]['base']).split()[0]
 
-        if not module_file:
-            module_file = self._get_module_file(module_name)
+        module_file = self._get_module_file(module_name)
         if not module_file and not self.module_files_updated:
             self._update_module_files()
             module_file = self._get_module_file(module_name)
@@ -139,19 +138,6 @@ def load_module_symbols(self, module, module_file=None):
         else:
             gdb.write("no module object found for '{0}'\n".format(module_name))
 
-    def load_ko_symbols(self, mod_path):
-        self.loaded_modules = []
-        module_list = modules.module_list()
-
-        for module in module_list:
-            module_name = module['name'].string()
-            module_pattern = ".*/{0}\.ko(?:.debug)?$".format(
-                module_name.replace("_", r"[_\-]"))
-            if re.match(module_pattern, mod_path) and os.path.exists(mod_path):
-                self.load_module_symbols(module, mod_path)
-                return
-        raise gdb.GdbError("%s is not a valid .ko\n" % mod_path)
-
     def load_all_symbols(self):
         gdb.write("loading vmlinux\n")
 
@@ -190,11 +176,6 @@ def invoke(self, arg, from_tty):
         self.module_files = []
         self.module_files_updated = False
 
-        argv = gdb.string_to_argv(arg)
-        if len(argv) == 1:
-            self.load_ko_symbols(argv[0])
-            return
-
         self.load_all_symbols()
 
         if hasattr(gdb, 'Breakpoint'):