Index: abi/include/abi/ipc/event.h
===================================================================
--- abi/include/abi/ipc/event.h	(revision 6fa9a99d9fa209ffacbdbc40837bf0f435c98e1b)
+++ abi/include/abi/ipc/event.h	(revision 91db0280db48f5f3ca71923f5d70cbafe2611a02)
@@ -44,4 +44,6 @@
 	/** A task/thread has faulted and will be terminated */
 	EVENT_FAULT,
+	/** New data available in kernel log */
+	EVENT_KLOG,
 	EVENT_END
 } event_type_t;
Index: abi/include/abi/klog.h
===================================================================
--- abi/include/abi/klog.h	(revision 91db0280db48f5f3ca71923f5d70cbafe2611a02)
+++ abi/include/abi/klog.h	(revision 91db0280db48f5f3ca71923f5d70cbafe2611a02)
@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2014 Martin Sucha
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup generic
+ * @{
+ */
+/** @file
+ */
+
+#ifndef ABI_KLOG_H_
+#define ABI_KLOG_H_
+
+typedef enum {
+	KLOG_WRITE,
+	KLOG_READ
+} klog_operation_t;
+
+#endif
+
+/** @}
+ */
Index: abi/include/abi/log.h
===================================================================
--- abi/include/abi/log.h	(revision 91db0280db48f5f3ca71923f5d70cbafe2611a02)
+++ abi/include/abi/log.h	(revision 91db0280db48f5f3ca71923f5d70cbafe2611a02)
@@ -0,0 +1,69 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * Copyright (c) 2011 Jiri Svoboda
+ * Copyright (c) 2013 Martin Sucha
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup genericlog
+ * @{
+ */
+/** @file
+ */
+
+#ifndef ABI_LOG_H_
+#define ABI_LOG_H_
+
+/** Log message level. */
+typedef enum {
+	/** Fatal error, program is not able to recover at all. */
+	LVL_FATAL,
+	/** Serious error but the program can recover from it. */
+	LVL_ERROR,
+	/** Easily recoverable problem. */
+	LVL_WARN,
+	/** Information message that ought to be printed by default. */
+	LVL_NOTE,
+	/** Debugging purpose message. */
+	LVL_DEBUG,
+	/** More detailed debugging message. */
+	LVL_DEBUG2,
+	
+	/** For checking range of values */
+	LVL_LIMIT
+} log_level_t;
+
+/* Who is the source of the message? */
+typedef enum {
+	LF_OTHER = 0,
+	LF_USPACE,
+	LF_ARCH
+} log_facility_t;
+
+#endif
+
+/** @}
+ */