source "lib/Kconfig.debug"
+config NONPROMISC_DEVMEM
+ bool "Filter access to /dev/mem"
+ help
+ If this option is left off, you allow userspace access to all
+ of memory, including kernel and userspace memory. Accidental
+ access to this is obviously disastrous, but specific access can
+ be used by people debugging the kernel.
+
+ If this option is switched on, the /dev/mem file only allows
+ userspace access to PCI space and the BIOS code and data regions.
+ This is sufficient for dosemu and X and all common users of
+ /dev/mem.
+
+ If in doubt, say Y.
+
config EARLY_PRINTK
bool "Early printk" if EMBEDDED
default y
data. This is recommended so that we can catch kernel bugs sooner.
If in doubt, say "Y".
+config DIRECT_GBPAGES
+ bool "Enable gbpages-mapped kernel pagetables"
+ depends on DEBUG_KERNEL && EXPERIMENTAL && X86_64
+ help
+ Enable gigabyte pages support (if the CPU supports it). This can
+ improve the kernel's performance a tiny bit by reducing TLB
+ pressure.
+
+ This is experimental code.
+
+ If in doubt, say "N".
+
config DEBUG_RODATA_TEST
bool "Testcase for the DEBUG_RODATA feature"
depends on DEBUG_RODATA
config 4KSTACKS
bool "Use 4Kb for kernel stacks instead of 8Kb"
- depends on DEBUG_KERNEL
depends on X86_32
help
If you say Y here the kernel will use a 4Kb stacksize for the
help
Do change_page_attr() self-tests every 30 seconds.
+config OPTIMIZE_INLINING
+ bool "Allow gcc to uninline functions marked 'inline'"
+ depends on BROKEN
+ help
+ This option determines if the kernel forces gcc to inline the functions
+ developers have marked 'inline'. Doing so takes away freedom from gcc to
+ do what it thinks is best, which is desirable for the gcc 3.x series of
+ compilers. The gcc 4.x series have a rewritten inlining algorithm and
+ disabling this option will generate a smaller kernel there. Hopefully
+ this algorithm is so good that allowing gcc4 to make the decision can
+ become the default in the future, until then this option is there to
+ test gcc for this.
+
endmenu
+