=============================================
preset-lpj-04.12.10.patch: 

This patch adds support for a preset value for loops_per_jiffy.

Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com> for CELF
---

 Kconfig |   39 +++++++++++++++++++++++++++++++++++++++
 main.c  |    4 ++--
 2 files changed, 41 insertions(+), 2 deletions(-)


diff -pruN -X ../cvs-admin/dontdiff tag_LINUX_2_6_9/init/Kconfig branch_PRESET_LPJ/init/Kconfig
--- tag_LINUX_2_6_9/init/Kconfig	2004-10-22 14:42:45.000000000 -0700
+++ branch_PRESET_LPJ/init/Kconfig	2004-11-03 12:16:40.000000000 -0800
@@ -224,6 +224,45 @@ config IKCONFIG_PROC
 	  This option enables access to the kernel configuration file
 	  through /proc/config.gz.
 
+menuconfig FASTBOOT
+	bool "Fast boot options"
+	help
+	  Say Y here to select among various options that can decrease
+	  kernel boot time. These options commonly involve providing
+	  hardcoded values for some parameters that the kernel usually
+	  determines automatically.
+	
+	  This option is useful primarily on embedded systems.
+	
+	  If unsure, say N.
+
+config PRESET_LPJ
+	int "Preset loops_per_jiffy" if FASTBOOT
+	default 0
+	help
+	  This is the number of loops used by delay() to achieve a single
+	  jiffy of delay inside the kernel.  It is normally calculated at
+	  boot time, but that calculation can take up to 250 ms per CPU.
+	  Specifying a constant value here will eliminate that delay.
+
+	  A value of 0 results in the normal autodetect behavior.
+
+	  To determine the correct value for your kernel, first set this
+	  option to 0, compile and boot the kernel on your target hardware,
+	  then see what value is printed during the kernel boot.  Use that
+	  value here.
+
+	  The kernel command line parameter "lpj=" can be used to override
+	  the value configured here.
+
+	  Note that on SMP systems the preset will be applied to all CPUs
+	  which will cause problems if for some reason your CPUs need
+	  significantly divergent settings.
+
+	  If unsure, set this to 0. An incorrect value will cause delays in
+	  the kernel to be wrong, leading to unpredictable I/O errors and
+	  other breakage.  Although unlikely, in the extreme case this might
+	  damage your hardware.
 
 menuconfig EMBEDDED
 	bool "Configure standard kernel features (for small systems)"
diff -pruN -X ../cvs-admin/dontdiff tag_LINUX_2_6_9/init/main.c branch_PRESET_LPJ/init/main.c
--- tag_LINUX_2_6_9/init/main.c	2004-10-22 14:42:45.000000000 -0700
+++ branch_PRESET_LPJ/init/main.c	2004-11-03 12:16:40.000000000 -0800
@@ -182,7 +182,7 @@ static int __init obsolete_checksetup(ch
 	return 0;
 }
 
-static unsigned long preset_lpj;
+static unsigned long preset_lpj = CONFIG_PRESET_LPJ;
 static int __init lpj_setup(char *str)
 {
 	preset_lpj = simple_strtoul(str,NULL,0);
@@ -220,7 +220,7 @@ void __devinit calibrate_delay(void)
 	} else {
 		loops_per_jiffy = (1<<12);
 
-		printk(KERN_DEBUG "Calibrating delay loop... ");
+		printk("Calibrating delay loop... ");
 		while ((loops_per_jiffy <<= 1) != 0) {
 			/* wait for "start of" clock tick */
 			ticks = jiffies;