The patch titled
printk time parameter
has been added to the -mm tree. Its filename is
printk-time-parameter.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: printk time parameter
From: Jan Engelhardt <jengelh@xxxxxxxxxxxxxxx>
Currently, enabling/disabling printk timestamps is only possible through
reboot (bootparam) or recompile. I normally do not run with timestamps
(since syslog handles that in a good manner), but for measuring small
kernel delays (e.g. irq probing - see parport thread) I needed subsecond
precision, but then again, just for some minutes rather than all kernel
messages to come. The following patch adds a module_param() with which the
timestamps can be en-/disabled in a live system through
/sys/modules/printk/parameters/printk_time.
Signed-off-by: Jan Engelhardt <jengelh@xxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
kernel/printk.c | 2 ++
1 file changed, 2 insertions(+)
diff -puN kernel/printk.c~printk-time-parameter kernel/printk.c
--- devel/kernel/printk.c~printk-time-parameter 2006-06-06 01:08:42.000000000 -0700
+++ devel-akpm/kernel/printk.c 2006-06-06 01:09:08.000000000 -0700
@@ -24,6 +24,7 @@
#include <linux/console.h>
#include <linux/init.h>
#include <linux/module.h>
+#include <linux/moduleparam.h>
#include <linux/interrupt.h> /* For in_interrupt() */
#include <linux/config.h>
#include <linux/delay.h>
@@ -438,6 +439,7 @@ static int printk_time = 1;
#else
static int printk_time = 0;
#endif
+module_param(printk_time, int, S_IRUGO | S_IWUSR);
static int __init printk_time_setup(char *str)
{
_
Patches currently in -mm which might be from jengelh@xxxxxxxxxxxxxxx are
lsm-add-task_setioprio-hook.patch
update-devicestxt.patch
printk-time-parameter.patch
-
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