trace, RAS: Add basic RAS trace event

To avoid confuision and conflict of usage for RAS related trace event,
add an unified RAS trace event stub.

Start a RAS subsystem menu which will be fleshed out in time, when more
features get added to it.

Signed-off-by: Chen, Gong <[e-mail]>
Link: http://lkml.kernel.org/r/[e-mail]
Signed-off-by: Borislav Petkov <[e-mail]>
Signed-off-by: Tony Luck <[e-mail]>

drivers/Kconfig

···
 
 source "drivers/mcb/Kconfig"
 
+source "drivers/ras/Kconfig"
+
 endmenu

drivers/Makefile

···
 obj-$(CONFIG_FMC)		+= fmc/
 obj-$(CONFIG_POWERCAP)		+= powercap/
 obj-$(CONFIG_MCB)		+= mcb/
+obj-$(CONFIG_RAS)		+= ras/

drivers/edac/Kconfig

···
 
 config EDAC_MM_EDAC
 	tristate "Main Memory EDAC (Error Detection And Correction) reporting"
+	select RAS
 	help
 	  Some systems are able to detect and correct errors in main
 	  memory.  EDAC can report statistics on memory error

drivers/edac/edac_mc.c

···
 #include <asm/edac.h>
 #include "edac_core.h"
 #include "edac_module.h"
-
-#define CREATE_TRACE_POINTS
-#define TRACE_INCLUDE_PATH ../../include/ras
 #include <ras/ras_event.h>
 
 /* lock to memory controller's control array */

drivers/ras/Kconfig

···
+config RAS
+	bool

drivers/ras/Makefile

···
+obj-$(CONFIG_RAS) += ras.o

drivers/ras/ras.c

···
+/*
+ * Copyright (C) 2014 Intel Corporation
+ *
+ * Authors:
+ *	Chen, Gong <[e-mail]>
+ */
+
+#define CREATE_TRACE_POINTS
+#define TRACE_INCLUDE_PATH ../../include/ras
+#include <ras/ras_event.h>
+
+EXPORT_TRACEPOINT_SYMBOL_GPL(mc_event);