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-rw-r--r--init/Kconfig47
-rw-r--r--init/main.c8
2 files changed, 49 insertions, 6 deletions
diff --git a/init/Kconfig b/init/Kconfig
index ba42f3793a84..f8f6929d8f25 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -228,6 +228,25 @@ config CPUSETS
source "usr/Kconfig"
+config UID16
+ bool "Enable 16-bit UID system calls" if EMBEDDED
+ depends !ALPHA && !PPC && !PPC64 && !PARISC && !V850 && !ARCH_S390X
+ depends !X86_64 || IA32_EMULATION
+ depends !SPARC64 || SPARC32_COMPAT
+ default y
+ help
+ This enables the legacy 16-bit UID syscall wrappers.
+
+config VM86
+ depends X86
+ default y
+ bool "Enable VM86 support" if EMBEDDED
+ help
+ This option is required by programs like DOSEMU to run 16-bit legacy
+ code on X86 processors. It also may be needed by software like
+ XFree86 to initialize some video cards via BIOS. Disabling this
+ option saves about 6k.
+
config CC_OPTIMIZE_FOR_SIZE
bool "Optimize for size (Look out for broken compilers!)"
default y
@@ -309,6 +328,21 @@ config BUG
option for embedded systems with no facilities for reporting errors.
Just say Y.
+config DOUBLEFAULT
+ depends X86
+ default y if X86
+ bool "Enable doublefault exception handler" if EMBEDDED
+ help
+ This option allows trapping of rare doublefault exceptions that
+ would otherwise cause a system to silently reboot. Disabling this
+ option saves about 4k.
+
+config ELF_CORE
+ default y
+ bool "Enable ELF core dumps" if EMBEDDED
+ help
+ Enable support for generating core dumps. Disabling saves about 4k.
+
config BASE_FULL
default y
bool "Enable full-sized data structures for core" if EMBEDDED
@@ -380,6 +414,15 @@ config CC_ALIGN_JUMPS
no dummy operations need be executed.
Zero means use compiler's default.
+config SLAB
+ default y
+ bool "Use full SLAB allocator" if EMBEDDED
+ 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.
+
endmenu # General setup
config TINY_SHMEM
@@ -391,6 +434,10 @@ config BASE_SMALL
default 0 if BASE_FULL
default 1 if !BASE_FULL
+config SLOB
+ default !SLAB
+ bool
+
menu "Loadable module support"
config MODULES
diff --git a/init/main.c b/init/main.c
index 2ed3638deec7..8342c2890b16 100644
--- a/init/main.c
+++ b/init/main.c
@@ -58,11 +58,6 @@
* This is one of the first .c files built. Error out early
* if we have compiler trouble..
*/
-#if __GNUC__ == 2 && __GNUC_MINOR__ == 96
-#ifdef CONFIG_FRAME_POINTER
-#error This compiler cannot compile correctly with frame pointers enabled
-#endif
-#endif
#ifdef CONFIG_X86_LOCAL_APIC
#include <asm/smp.h>
@@ -74,7 +69,7 @@
* To avoid associated bogus bug reports, we flatly refuse to compile
* with a gcc that is known to be too old from the very beginning.
*/
-#if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 95)
+#if (__GNUC__ < 3) || (__GNUC__ == 3 && __GNUC_MINOR__ < 2)
#error Sorry, your GCC is too old. It builds incorrect kernels.
#endif
@@ -512,6 +507,7 @@ asmlinkage void __init start_kernel(void)
}
#endif
vfs_caches_init_early();
+ cpuset_init_early();
mem_init();
kmem_cache_init();
setup_per_cpu_pageset();