PERFORCE change 129145 for review

[John Birrell]

http://perforce.freebsd.org/chv.cgi?CH=129145

Change 129145 by jb at jb_freebsd1 on 2007/11/17 01:20:01

	Add the kernel DTrace hooks option.

Affected files ...

.. //depot/projects/dtrace7/src/sys/conf/NOTES#2 edit
.. //depot/projects/dtrace7/src/sys/conf/files#2 edit
.. //depot/projects/dtrace7/src/sys/conf/options#2 edit
.. //depot/projects/dtrace7/src/sys/kern/kern_dtrace.c#1 add
.. //depot/projects/dtrace7/src/sys/sys/kernel.h#2 edit

Differences ...

==== //depot/projects/dtrace7/src/sys/conf/NOTES#2 (text+ko) ====

@@ -353,6 +353,12 @@
 options 	GDB
 
 #
+# Enable the kernel DTrace hooks which are required to load the DTrace
+# kernel modules.
+#
+options 	KDTRACE_HOOKS
+
+#
 # SYSCTL_DEBUG enables a 'sysctl' debug tree that can be used to dump the
 # contents of the registered sysctl nodes on the console.  It is disabled by
 # default because it generates excessively verbose console output that can

==== //depot/projects/dtrace7/src/sys/conf/files#2 (text+ko) ====

@@ -1415,6 +1415,7 @@
 kern/kern_cpu.c			standard
 kern/kern_context.c		standard
 kern/kern_descrip.c		standard
+kern/kern_dtrace.c		optional kdtrace_hooks
 kern/kern_environment.c		standard
 kern/kern_event.c		standard
 kern/kern_exec.c		standard

==== //depot/projects/dtrace7/src/sys/conf/options#2 (text+ko) ====

@@ -99,6 +99,7 @@
 GEOM_VIRSTOR	opt_geom.h
 GEOM_VOL	opt_geom.h
 GEOM_ZERO	opt_geom.h
+KDTRACE_HOOKS	opt_kdtrace.h
 KSE		opt_global.h
 KSTACK_MAX_PAGES
 KSTACK_PAGES

==== //depot/projects/dtrace7/src/sys/sys/kernel.h#2 (text+ko) ====

@@ -115,6 +115,7 @@
 	SI_SUB_EVENTHANDLER	= 0x1C00000,	/* eventhandler init */
 	SI_SUB_KLD		= 0x2000000,	/* KLD and module setup */
 	SI_SUB_CPU		= 0x2100000,	/* CPU resource(s)*/
+	SI_SUB_KDTRACE		= 0x2140000,	/* Kernel dtrace hooks */
 	SI_SUB_MAC		= 0x2180000,	/* TrustedBSD MAC subsystem */
 	SI_SUB_MAC_POLICY	= 0x21C0000,	/* TrustedBSD MAC policies */
 	SI_SUB_MAC_LATE		= 0x21D0000,	/* TrustedBSD MAC subsystem */