X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;f=init%2FKconfig;h=4ad6de163238f2bfc252e0cc9ef6c6dc2548e34b;hb=f7e4217b007d1f73e7e3cf10ba4fea4a608c603f;hp=b170aa1d43bd127c75b7380237e18bbb2f1c3f2e;hpb=5b3c1184e78dd7d74eced83b25af88cf1d13e686;p=powerpc.git

diff --git a/init/Kconfig b/init/Kconfig
index b170aa1d43..4ad6de1632 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -80,16 +80,20 @@ config LOCALVERSION_AUTO
 	default y
 	help
 	  This will try to automatically determine if the current tree is a
-	  release tree by looking for git tags that
-	  belong to the current top of tree revision.
+	  release tree by looking for git tags that belong to the current
+	  top of tree revision.
 
 	  A string of the format -gxxxxxxxx will be added to the localversion
-	  if a git based tree is found.  The string generated by this will be
+	  if a git-based tree is found.  The string generated by this will be
 	  appended after any matching localversion* files, and after the value
-	  set in CONFIG_LOCALVERSION
+	  set in CONFIG_LOCALVERSION.
 
-	  Note: This requires Perl, and a git repository, but not necessarily
-	  the git or cogito tools to be installed.
+	  (The actual string used here is the first eight characters produced
+	  by running the command:
+
+	    $ git rev-parse --verify HEAD
+
+	  which is done within the script "scripts/setlocalversion".)
 
 config SWAP
 	bool "Support for paging of anonymous memory (swap)"
@@ -262,6 +266,23 @@ config IKCONFIG_PROC
 	  This option enables access to the kernel configuration file
 	  through /proc/config.gz.
 
+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
+	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
+		     13 =>  8 KB
+		     12 =>  4 KB
+
 config CPUSETS
 	bool "Cpuset support"
 	depends on SMP
@@ -352,7 +373,7 @@ menuconfig EMBEDDED
 
 config UID16
 	bool "Enable 16-bit UID system calls" if EMBEDDED
-	depends on ARM || CRIS || FRV || H8300 || X86_32 || M68K || (S390 && !64BIT) || SUPERH || SPARC32 || (SPARC64 && SPARC32_COMPAT) || UML || (X86_64 && IA32_EMULATION)
+	depends on ARM || BFIN || CRIS || FRV || H8300 || X86_32 || M68K || (S390 && !64BIT) || SUPERH || SPARC32 || (SPARC64 && SPARC32_COMPAT) || UML || (X86_64 && IA32_EMULATION)
 	default y
 	help
 	  This enables the legacy 16-bit UID syscall wrappers.
@@ -474,15 +495,6 @@ config SHMEM
 	  option replaces shmem and tmpfs with the much simpler ramfs code,
 	  which may be appropriate on small systems without swap.
 
-config SLAB
-	default y
-	bool "Use full SLAB allocator" if (EMBEDDED && !SMP && !SPARSEMEM)
-	help
-	  Disabling this replaces the advanced SLAB allocator and
-	  kmalloc support with the drastically simpler SLOB allocator.
-	  SLOB is more space efficient but does not scale well and is
-	  more susceptible to fragmentation.
-
 config VM_EVENT_COUNTERS
 	default y
 	bool "Enable VM event counters for /proc/vmstat" if EMBEDDED
@@ -492,6 +504,54 @@ config VM_EVENT_COUNTERS
 	  on EMBEDDED systems.  /proc/vmstat will only show page counts
 	  if VM event counters are disabled.
 
+config SLUB_DEBUG
+	default y
+	bool "Enable SLUB debugging support" if EMBEDDED
+	help
+	  SLUB has extensive debug support features. Disabling these can
+	  result in significant savings in code size. This also disables
+	  SLUB sysfs support. /sys/slab will not exist and there will be
+	  no support for cache validation etc.
+
+choice
+	prompt "Choose SLAB allocator"
+	default SLAB
+	help
+	   This option allows to select a slab allocator.
+
+config SLAB
+	bool "SLAB"
+	help
+	  The regular slab allocator that is established and known to work
+	  well in all environments. It organizes cache hot objects in
+	  per cpu and per node queues. SLAB is the default choice for
+	  a slab allocator.
+
+config SLUB
+	depends on EXPERIMENTAL && !ARCH_USES_SLAB_PAGE_STRUCT
+	bool "SLUB (Unqueued Allocator)"
+	help
+	   SLUB is a slab allocator that minimizes cache line usage
+	   instead of managing queues of cached objects (SLAB approach).
+	   Per cpu caching is realized using slabs of objects instead
+	   of queues of objects. SLUB can use memory efficiently
+	   and has enhanced diagnostics.
+
+config SLOB
+#
+#	SLOB does not support SMP because SLAB_DESTROY_BY_RCU is unsupported
+#
+	depends on EMBEDDED && !SMP && !SPARSEMEM
+	bool "SLOB (Simple Allocator)"
+	help
+	   SLOB replaces the SLAB allocator with a drastically simpler
+	   allocator.  SLOB is more space efficient that SLAB but does not
+	   scale well (single lock for all operations) and is also highly
+	   susceptible to fragmentation. SLUB can accomplish a higher object
+	   density. It is usually better to use SLUB instead of SLOB.
+
+endchoice
+
 endmenu		# General setup
 
 config RT_MUTEXES
@@ -507,10 +567,6 @@ config BASE_SMALL
 	default 0 if BASE_FULL
 	default 1 if !BASE_FULL
 
-config SLOB
-	default !SLAB
-	bool
-
 menu "Loadable module support"
 
 config MODULES