diff -rupN linux-2.6.11-rc1/arch/i386/Kconfig linux-2.6.11-rc1.config-hz/arch/i386/Kconfig
--- linux-2.6.11-rc1/arch/i386/Kconfig	2005-01-12 19:19:39.000000000 +0100
+++ linux-2.6.11-rc1.config-hz/arch/i386/Kconfig	2005-01-12 19:42:22.000000000 +0100
@@ -1051,6 +1051,27 @@ source "arch/i386/kernel/cpu/cpufreq/Kco
 
 endmenu
 
+choice
+	prompt "Kernel internal timer frequency"
+	default HZ_1000
+
+config HZ_1000
+	bool "1000"
+
+config HZ_512
+	bool "512"
+
+config HZ_100
+	bool "100"
+
+endchoice
+
+config HZ
+	int
+	default "1000" if HZ_1000
+	default "512" if HZ_512
+	default "100" if HZ_100
+
 menu "Bus options (PCI, PCMCIA, EISA, MCA, ISA)"
 
 config X86_VISWS_APIC
diff -rupN linux-2.6.11-rc1/arch/ppc/Kconfig linux-2.6.11-rc1.config-hz/arch/ppc/Kconfig
--- linux-2.6.11-rc1/arch/ppc/Kconfig	2005-01-12 19:19:39.000000000 +0100
+++ linux-2.6.11-rc1.config-hz/arch/ppc/Kconfig	2005-01-12 19:42:22.000000000 +0100
@@ -1042,6 +1042,27 @@ source "drivers/zorro/Kconfig"
 
 endmenu
 
+choice
+	prompt "Kernel internal timer frequency"
+	default HZ_1000
+
+config HZ_1000
+	bool "1000"
+
+config HZ_512
+	bool "512"
+
+config HZ_100
+	bool "100"
+
+endchoice
+
+config HZ
+	int
+	default "1000" if HZ_1000
+	default "512" if HZ_512
+	default "100" if HZ_100
+
 menu "Bus options"
 
 config ISA
diff -rupN linux-2.6.11-rc1/arch/x86_64/Kconfig linux-2.6.11-rc1.config-hz/arch/x86_64/Kconfig
--- linux-2.6.11-rc1/arch/x86_64/Kconfig	2005-01-12 19:19:40.000000000 +0100
+++ linux-2.6.11-rc1.config-hz/arch/x86_64/Kconfig	2005-01-12 19:42:22.000000000 +0100
@@ -382,6 +382,27 @@ source "arch/x86_64/kernel/cpufreq/Kconf
 
 endmenu
 
+choice
+	prompt "Kernel internal timer frequency"
+	default HZ_1000
+
+config HZ_1000
+	bool "1000"
+
+config HZ_512
+	bool "512"
+
+config HZ_100
+	bool "100"
+
+endchoice
+
+config HZ
+	int
+	default "1000" if HZ_1000
+	default "512" if HZ_512
+	default "100" if HZ_100
+
 menu "Bus options (PCI etc.)"
 
 config PCI
diff -rupN linux-2.6.11-rc1/include/asm-i386/param.h linux-2.6.11-rc1.config-hz/include/asm-i386/param.h
--- linux-2.6.11-rc1/include/asm-i386/param.h	2004-08-14 13:14:29.000000000 +0200
+++ linux-2.6.11-rc1.config-hz/include/asm-i386/param.h	2005-01-12 19:42:22.000000000 +0100
@@ -2,7 +2,7 @@
 #define _ASMi386_PARAM_H
 
 #ifdef __KERNEL__
-# define HZ		1000		/* Internal kernel timer frequency */
+# define HZ		CONFIG_HZ	/* Internal kernel timer frequency */
 # define USER_HZ	100		/* .. some user interfaces are in "ticks" */
 # define CLOCKS_PER_SEC		(USER_HZ)	/* like times() */
 #endif
diff -rupN linux-2.6.11-rc1/include/asm-ppc/param.h linux-2.6.11-rc1.config-hz/include/asm-ppc/param.h
--- linux-2.6.11-rc1/include/asm-ppc/param.h	2004-03-11 14:01:30.000000000 +0100
+++ linux-2.6.11-rc1.config-hz/include/asm-ppc/param.h	2005-01-12 19:42:22.000000000 +0100
@@ -2,7 +2,7 @@
 #define _ASM_PPC_PARAM_H
 
 #ifdef __KERNEL__
-#define HZ		1000		/* internal timer frequency */
+#define HZ		CONFIG_HZ	/* internal timer frequency */
 #define USER_HZ		100		/* for user interfaces in "ticks" */
 #define CLOCKS_PER_SEC	(USER_HZ)	/* frequency at which times() counts */
 #endif /* __KERNEL__ */
diff -rupN linux-2.6.11-rc1/include/asm-x86_64/param.h linux-2.6.11-rc1.config-hz/include/asm-x86_64/param.h
--- linux-2.6.11-rc1/include/asm-x86_64/param.h	2004-03-11 14:01:30.000000000 +0100
+++ linux-2.6.11-rc1.config-hz/include/asm-x86_64/param.h	2005-01-12 19:42:22.000000000 +0100
@@ -2,7 +2,7 @@
 #define _ASMx86_64_PARAM_H
 
 #ifdef __KERNEL__
-# define HZ            1000            /* Internal kernel timer frequency */
+# define HZ            CONFIG_HZ       /* Internal kernel timer frequency */
 # define USER_HZ       100          /* .. some user interfaces are in "ticks */
 #define CLOCKS_PER_SEC        (USER_HZ)       /* like times() */
 #endif