X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=init%2FKconfig;h=e037a5a22b468a47f331f2d5bd5bce957e3f76e6;hb=f17a32e97eaa924754bf4463aee588a3890c7ae0;hp=074ac97f55e32a505ea3479ba85d0c3c619ac9e6;hpb=b881502666783b2d9ca2fc7a056d0f773073a808;p=linux-2.6

diff --git a/init/Kconfig b/init/Kconfig
index 074ac97f55..e037a5a22b 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -259,17 +259,14 @@ config IKCONFIG_PROC
 config LOG_BUF_SHIFT
 	int "Kernel log buffer size (16 => 64KB, 17 => 128KB)"
 	range 12 21
-	default 17 if S390 || LOCKDEP
-	default 16 if X86_NUMAQ || IA64
-	default 15 if SMP
-	default 14
+	default 17
 	help
 	  Select kernel log buffer size as a power of 2.
-	  Defaults and Examples:
-	  	     17 => 128 KB for S/390
-		     16 => 64 KB for x86 NUMAQ or IA-64
-	             15 => 32 KB for SMP
-	             14 => 16 KB for uniprocessor
+	  Examples:
+	  	     17 => 128 KB
+		     16 => 64 KB
+	             15 => 32 KB
+	             14 => 16 KB
 		     13 =>  8 KB
 		     12 =>  4 KB
 
@@ -328,6 +325,13 @@ config RT_GROUP_SCHED
 	depends on EXPERIMENTAL
 	depends on GROUP_SCHED
 	default n
+	help
+	  This feature lets you explicitly allocate real CPU bandwidth
+	  to users or control groups (depending on the "Basis for grouping tasks"
+	  setting below. If enabled, it will also make it impossible to
+	  schedule realtime tasks for non-root users until you allocate
+	  realtime bandwidth for them.
+	  See Documentation/sched-rt-group.txt for more information.
 
 choice
 	depends on GROUP_SCHED
@@ -489,16 +493,12 @@ source "usr/Kconfig"
 endif
 
 config CC_OPTIMIZE_FOR_SIZE
-	bool "Optimize for size (Look out for broken compilers!)"
+	bool "Optimize for size"
 	default y
-	depends on ARM || H8300 || SUPERH || EXPERIMENTAL
 	help
 	  Enabling this option will pass "-Os" instead of "-O2" to gcc
 	  resulting in a smaller kernel.
 
-	  WARNING: some versions of gcc may generate incorrect code with this
-	  option.  If problems are observed, a gcc upgrade may be needed.
-
 	  If unsure, say N.
 
 config SYSCTL
@@ -514,7 +514,7 @@ menuconfig EMBEDDED
 
 config UID16
 	bool "Enable 16-bit UID system calls" if EMBEDDED
-	depends on ARM || BLACKFIN || CRIS || FRV || H8300 || X86_32 || M68K || (S390 && !64BIT) || SUPERH || SPARC32 || (SPARC64 && SPARC32_COMPAT) || UML || (X86_64 && IA32_EMULATION)
+	depends on ARM || BLACKFIN || CRIS || FRV || H8300 || X86_32 || M68K || (S390 && !64BIT) || SUPERH || SPARC32 || (SPARC64 && COMPAT) || UML || (X86_64 && IA32_EMULATION)
 	default y
 	help
 	  This enables the legacy 16-bit UID syscall wrappers.
@@ -763,7 +763,7 @@ endmenu		# General setup
 config SLABINFO
 	bool
 	depends on PROC_FS
-	depends on SLAB || SLUB
+	depends on SLAB || SLUB_DEBUG
 	default y
 
 config RT_MUTEXES
@@ -865,38 +865,10 @@ source "block/Kconfig"
 config PREEMPT_NOTIFIERS
 	bool
 
-choice
-	prompt "RCU implementation type:"
-	default CLASSIC_RCU
-	help
-	  This allows you to choose either the classic RCU implementation
-	  that is designed for best read-side performance on non-realtime
-	  systems, or the preemptible RCU implementation for best latency
-	  on realtime systems.  Note that some kernel preemption modes
-	  will restrict your choice.
-
-	  Select the default if you are unsure.
-
 config CLASSIC_RCU
-	bool "Classic RCU"
+	def_bool !PREEMPT_RCU
 	help
 	  This option selects the classic RCU implementation that is
 	  designed for best read-side performance on non-realtime
-	  systems.
-
-	  Say Y if you are unsure.
-
-config PREEMPT_RCU
-	bool "Preemptible RCU"
-	depends on PREEMPT
-	help
-	  This option reduces the latency of the kernel by making certain
-	  RCU sections preemptible. Normally RCU code is non-preemptible, if
-	  this option is selected then read-only RCU sections become
-	  preemptible. This helps latency, but may expose bugs due to
-	  now-naive assumptions about each RCU read-side critical section
-	  remaining on a given CPU through its execution.
-
-	  Say N if you are unsure.
-
-endchoice
+	  systems.  Classic RCU is the default.  Note that the
+	  PREEMPT_RCU symbol is used to select/deselect this option.