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-rw-r--r--kernel/debug/debug_core.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/kernel/debug/debug_core.c b/kernel/debug/debug_core.c
index 17e073c309e6..9a61738cefc8 100644
--- a/kernel/debug/debug_core.c
+++ b/kernel/debug/debug_core.c
@@ -696,6 +696,22 @@ out:
696 return ret; 696 return ret;
697} 697}
698 698
699/*
700 * GDB places a breakpoint at this function to know dynamically
701 * loaded objects. It's not defined static so that only one instance with this
702 * name exists in the kernel.
703 */
704
705static int module_event(struct notifier_block *self, unsigned long val,
706 void *data)
707{
708 return 0;
709}
710
711static struct notifier_block dbg_module_load_nb = {
712 .notifier_call = module_event,
713};
714
699int kgdb_nmicallback(int cpu, void *regs) 715int kgdb_nmicallback(int cpu, void *regs)
700{ 716{
701#ifdef CONFIG_SMP 717#ifdef CONFIG_SMP
@@ -824,6 +840,7 @@ static void kgdb_register_callbacks(void)
824 kgdb_arch_init(); 840 kgdb_arch_init();
825 if (!dbg_is_early) 841 if (!dbg_is_early)
826 kgdb_arch_late(); 842 kgdb_arch_late();
843 register_module_notifier(&dbg_module_load_nb);
827 register_reboot_notifier(&dbg_reboot_notifier); 844 register_reboot_notifier(&dbg_reboot_notifier);
828 atomic_notifier_chain_register(&panic_notifier_list, 845 atomic_notifier_chain_register(&panic_notifier_list,
829 &kgdb_panic_event_nb); 846 &kgdb_panic_event_nb);
@@ -847,6 +864,7 @@ static void kgdb_unregister_callbacks(void)
847 if (kgdb_io_module_registered) { 864 if (kgdb_io_module_registered) {
848 kgdb_io_module_registered = 0; 865 kgdb_io_module_registered = 0;
849 unregister_reboot_notifier(&dbg_reboot_notifier); 866 unregister_reboot_notifier(&dbg_reboot_notifier);
867 unregister_module_notifier(&dbg_module_load_nb);
850 atomic_notifier_chain_unregister(&panic_notifier_list, 868 atomic_notifier_chain_unregister(&panic_notifier_list,
851 &kgdb_panic_event_nb); 869 &kgdb_panic_event_nb);
852 kgdb_arch_exit(); 870 kgdb_arch_exit();