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yaml --- r: 23826 b: refs/heads/master c: 4bdc3b7 h: refs/heads/master v: v3
git-mirror · Mar 25, 2006 · 1c31047 · 1c31047
1 parent 3dd62f0
commit 1c31047
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Showing 6 changed files with 1,322 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 9b2a13b963dece8d45e07692b7872ae5a075ca2a
+refs/heads/master: 4bdc3b7f1b730c07f5a6ccca77ee68e044036ffc
diff --git a/trunk/arch/x86_64/Kconfig b/trunk/arch/x86_64/Kconfig
@@ -464,6 +464,14 @@ config SECCOMP
 
 source kernel/Kconfig.hz
 
+config REORDER
+	bool "Function reordering"
+	default n
+	help
+         This option enables the toolchain to reorder functions for a more 
+         optimal TLB usage. If you have pretty much any version of binutils, 
+	 this can increase your kernel build time by roughly one minute.
+
 endmenu
 
 #

diff --git a/trunk/arch/x86_64/Makefile b/trunk/arch/x86_64/Makefile
@@ -36,6 +36,7 @@ CFLAGS += -m64
 CFLAGS += -mno-red-zone
 CFLAGS += -mcmodel=kernel
 CFLAGS += -pipe
+cflags-$(CONFIG_REORDER) += -ffunction-sections
 # this makes reading assembly source easier, but produces worse code
 # actually it makes the kernel smaller too.
 CFLAGS += -fno-reorder-blocks