X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=arch%2Fx86%2FKconfig.debug;h=ac1e31ba4795cb0f067a280826da257432f93f33;hb=d23b200a75f78e62744c3c25d078855eec8a689b;hp=cb7002eca8875000b69e2c9165a8f9187b2942f6;hpb=926e5392ba8a388ae32ca0d2714cc2c73945c609;p=linux-2.6

diff --git a/arch/x86/Kconfig.debug b/arch/x86/Kconfig.debug
index cb7002eca8..ac1e31ba47 100644
--- a/arch/x86/Kconfig.debug
+++ b/arch/x86/Kconfig.debug
@@ -5,6 +5,17 @@ config TRACE_IRQFLAGS_SUPPORT
 
 source "lib/Kconfig.debug"
 
+config NONPROMISC_DEVMEM
+	bool "Disable promiscuous /dev/mem"
+	help
+	  The /dev/mem file by default 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. With this config
+	  option, you allow userspace access to all of memory, including
+	  kernel and userspace memory. Accidental access to this is
+	  obviously disasterous, but specific access can be used by people
+	  debugging the kernel.
+
 config EARLY_PRINTK
 	bool "Early printk" if EMBEDDED
 	default y
@@ -56,7 +67,7 @@ config DEBUG_PER_CPU_MAPS
 
 config X86_PTDUMP
 	bool "Export kernel pagetable layout to userspace via debugfs"
-	depends on X86_64
+	depends on DEBUG_KERNEL
 	select DEBUG_FS
 	help
 	  Say Y here if you want to show the kernel pagetable layout in a
@@ -76,6 +87,18 @@ config DEBUG_RODATA
 	  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
@@ -94,7 +117,6 @@ config DEBUG_NX_TEST
 
 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
@@ -233,4 +255,18 @@ config CPA_DEBUG
 	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
+