Index: head/sys/amd64/conf/GENERIC
===================================================================
--- head/sys/amd64/conf/GENERIC
+++ head/sys/amd64/conf/GENERIC
@@ -73,6 +73,9 @@
 options 	KDTRACE_HOOKS		# Kernel DTrace hooks
 options 	DDB_CTF			# Kernel ELF linker loads CTF data
 options 	INCLUDE_CONFIG_FILE	# Include this file in kernel
+options 	RACCT			# Resource accounting framework
+options 	RACCT_DEFAULT_TO_DISABLED # Set kern.racct.enable=0 by default
+options 	RCTL			# Resource limits
 
 # Debugging support.  Always need this:
 options 	KDB			# Enable kernel debugger support.
Index: head/sys/arm64/conf/GENERIC
===================================================================
--- head/sys/arm64/conf/GENERIC
+++ head/sys/arm64/conf/GENERIC
@@ -65,6 +65,9 @@
 options 	KDTRACE_FRAME		# Ensure frames are compiled in
 options 	KDTRACE_HOOKS		# Kernel DTrace hooks
 options 	VFP			# Floating-point support
+options 	RACCT			# Resource accounting framework
+options 	RACCT_DEFAULT_TO_DISABLED # Set kern.racct.enable=0 by default
+options 	RCTL			# Resource limits
 
 device		virtio
 device		virtio_mmio
Index: head/sys/conf/options
===================================================================
--- head/sys/conf/options
+++ head/sys/conf/options
@@ -931,7 +931,7 @@
 
 # Resource Accounting
 RACCT		opt_global.h
-RACCT_DISABLED	opt_global.h
+RACCT_DEFAULT_TO_DISABLED	opt_global.h
 
 # Resource Limits
 RCTL		opt_global.h
Index: head/sys/i386/conf/GENERIC
===================================================================
--- head/sys/i386/conf/GENERIC
+++ head/sys/i386/conf/GENERIC
@@ -73,6 +73,9 @@
 options 	KDTRACE_HOOKS		# Kernel DTrace hooks
 options 	DDB_CTF			# Kernel ELF linker loads CTF data
 options 	INCLUDE_CONFIG_FILE	# Include this file in kernel
+options 	RACCT			# Resource accounting framework
+options 	RACCT_DEFAULT_TO_DISABLED # Set kern.racct.enable=0 by default
+options 	RCTL			# Resource limits
 
 # Debugging support.  Always need this:
 options 	KDB			# Enable kernel debugger support.
Index: head/sys/kern/kern_racct.c
===================================================================
--- head/sys/kern/kern_racct.c
+++ head/sys/kern/kern_racct.c
@@ -70,7 +70,7 @@
  * Do not block processes that have their %cpu usage <= pcpu_threshold.
  */
 static int pcpu_threshold = 1;
-#ifdef RACCT_DISABLED
+#ifdef RACCT_DEFAULT_TO_DISABLED
 int racct_enable = 0;
 #else
 int racct_enable = 1;
Index: head/sys/pc98/conf/GENERIC
===================================================================
--- head/sys/pc98/conf/GENERIC
+++ head/sys/pc98/conf/GENERIC
@@ -71,6 +71,9 @@
 options 	CAPABILITIES		# Capsicum capabilities
 options 	MAC			# TrustedBSD MAC Framework
 options 	INCLUDE_CONFIG_FILE	# Include this file in kernel
+options 	RACCT			# Resource accounting framework
+options 	RACCT_DEFAULT_TO_DISABLED # Set kern.racct.enable=0 by default
+options 	RCTL			# Resource limits
 
 # Debugging support.  Always need this:
 options 	KDB			# Enable kernel debugger support.
Index: head/sys/powerpc/conf/GENERIC
===================================================================
--- head/sys/powerpc/conf/GENERIC
+++ head/sys/powerpc/conf/GENERIC
@@ -77,6 +77,9 @@
 options 	KDTRACE_HOOKS		# Kernel DTrace hooks
 options 	DDB_CTF			# Kernel ELF linker loads CTF data
 options 	INCLUDE_CONFIG_FILE     # Include this file in kernel
+options 	RACCT			# Resource accounting framework
+options 	RACCT_DEFAULT_TO_DISABLED # Set kern.racct.enable=0 by default
+options 	RCTL			# Resource limits
 
 # Debugging support.  Always need this:
 options 	KDB			# Enable kernel debugger support.
Index: head/sys/sparc64/conf/GENERIC
===================================================================
--- head/sys/sparc64/conf/GENERIC
+++ head/sys/sparc64/conf/GENERIC
@@ -67,6 +67,9 @@
 options 	CAPABILITIES		# Capsicum capabilities
 options 	MAC			# TrustedBSD MAC Framework
 options 	INCLUDE_CONFIG_FILE	# Include this file in kernel
+options 	RACCT			# Resource accounting framework
+options 	RACCT_DEFAULT_TO_DISABLED # Set kern.racct.enable=0 by default
+options 	RCTL			# Resource limits
 
 # Debugging support.  Always need this:
 options 	KDB			# Enable kernel debugger support.
Index: head/usr.bin/rctl/rctl.8
===================================================================
--- head/usr.bin/rctl/rctl.8
+++ head/usr.bin/rctl/rctl.8
@@ -233,6 +233,18 @@
 Not all actions are supported for all resources.
 Attempting to add a rule with an action not supported by a given resource will
 result in error.
+.Sh LOADER TUNABLES
+Tunables can be set at the
+.Xr loader 8
+prompt, or
+.Xr loader.conf 5 .
+.Bl -tag -width indent
+.It Va kern.racct.enable: No 1
+Enable
+.Nm .
+This defaults to 1, unless
+.Cd "options RACCT_DEFAULT_TO_DISABLED"
+is set in the kernel configuration file.
 .Sh EXIT STATUS
 .Ex -std
 .Sh EXAMPLES