[PATCH] gdb: lx-symbols: do not error out on monolithic build

[Etienne Buira]

This avoids spurious message:
(gdb) lx-symbols
loading vmlinux
No source file named kernel/module/main.c.

Signed-off-by: Etienne Buira <etienne.buira@xxxxxxx>
---
 scripts/gdb/linux/modules.py | 3 +++
 scripts/gdb/linux/symbols.py | 4 ++--
 2 files changed, 5 insertions(+), 2 deletions(-)

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/symbols.py b/scripts/gdb/linux/symbols.py
index e8316beb17a7..fb0f55d81686 100644
--- a/scripts/gdb/linux/symbols.py
+++ b/scripts/gdb/linux/symbols.py
@@ -178,13 +178,13 @@ lx-symbols command."""
 
         self.load_all_symbols()
 
-        if hasattr(gdb, 'Breakpoint'):
+        if hasattr(gdb, 'Breakpoint') and modules.has_modules():
             if self.breakpoint is not None:
                 self.breakpoint.delete()
                 self.breakpoint = None
             self.breakpoint = LoadModuleBreakpoint(
                 "kernel/module/main.c:do_init_module", self)
-        else:
+        elif modules.has_modules():
             gdb.write("Note: symbol update on module loading not supported "
                       "with this gdb version\n")
 
-- 
2.45.2