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-rw-r--r--kernel/die_notifier.c38
1 files changed, 38 insertions, 0 deletions
diff --git a/kernel/die_notifier.c b/kernel/die_notifier.c
new file mode 100644
index 00000000000..0d98827887a
--- /dev/null
+++ b/kernel/die_notifier.c
@@ -0,0 +1,38 @@
+
+#include <linux/module.h>
+#include <linux/notifier.h>
+#include <linux/vmalloc.h>
+#include <linux/kdebug.h>
+
+
+static ATOMIC_NOTIFIER_HEAD(die_chain);
+
+int notify_die(enum die_val val, const char *str,
+ struct pt_regs *regs, long err, int trap, int sig)
+{
+ struct die_args args = {
+ .regs = regs,
+ .str = str,
+ .err = err,
+ .trapnr = trap,
+ .signr = sig,
+
+ };
+
+ return atomic_notifier_call_chain(&die_chain, val, &args);
+}
+
+int register_die_notifier(struct notifier_block *nb)
+{
+ vmalloc_sync_all();
+ return atomic_notifier_chain_register(&die_chain, nb);
+}
+EXPORT_SYMBOL_GPL(register_die_notifier);
+
+int unregister_die_notifier(struct notifier_block *nb)
+{
+ return atomic_notifier_chain_unregister(&die_chain, nb);
+}
+EXPORT_SYMBOL_GPL(unregister_die_notifier);
+
+