1 files changed, 61 insertions, 0 deletions

diff --git a/include/linux/kmsg_dump.h b/include/linux/kmsg_dump.h
new file mode 100644
index 000000000000..24b44145a886
--- /dev/null
+++ b/include/linux/kmsg_dump.h
@@ -0,0 +1,61 @@
+/*
+ * linux/include/kmsg_dump.h
+ *
+ * Copyright (C) 2009 Net Insight AB
+ *
+ * Author: Simon Kagstrom <simon.kagstrom@netinsight.net>
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file COPYING in the main directory of this archive
+ * for more details.
+ */
+#ifndef _LINUX_KMSG_DUMP_H
+#define _LINUX_KMSG_DUMP_H
+
+#include <linux/list.h>
+
+enum kmsg_dump_reason {
+        KMSG_DUMP_OOPS,
+        KMSG_DUMP_PANIC,
+        KMSG_DUMP_KEXEC,
+};
+
+/**
+ * struct kmsg_dumper - kernel crash message dumper structure
+ * @dump:       The callback which gets called on crashes. The buffer is passed
+ *              as two sections, where s1 (length l1) contains the older
+ *              messages and s2 (length l2) contains the newer.
+ * @list:       Entry in the dumper list (private)
+ * @registered: Flag that specifies if this is already registered
+ */
+struct kmsg_dumper {
+        void (*dump)(struct kmsg_dumper *dumper, enum kmsg_dump_reason reason,
+                        const char *s1, unsigned long l1,
+                        const char *s2, unsigned long l2);
+        struct list_head list;
+        int registered;
+};
+
+#ifdef CONFIG_PRINTK
+void kmsg_dump(enum kmsg_dump_reason reason);
+
+int kmsg_dump_register(struct kmsg_dumper *dumper);
+
+int kmsg_dump_unregister(struct kmsg_dumper *dumper);
+#else
+static inline void kmsg_dump(enum kmsg_dump_reason reason)
+{
+}
+
+static inline int kmsg_dump_register(struct kmsg_dumper *dumper)
+{
+        return -EINVAL;
+}
+
+static inline int kmsg_dump_unregister(struct kmsg_dumper *dumper)
+{
+        return -EINVAL;
+}
+#endif
+
+#endif /* _LINUX_KMSG_DUMP_H */