Re: [PATCH] making the printk buffer bigger

Martin J. Bligh (Martin.Bligh@us.ibm.com)
Mon, 29 Oct 2001 16:25:19 -0800


> For larger machines, 16K isn't big enough to hold all the boot
> messages - which means some of the earlier boot messages don't
> make it to the log files.
>
> Could you add this tiny patch to fix it?

OK, seeing as people don't seem to want a decent size buffer on
CONFIG_SMP machines, could we at least do it under
CONFIG_MULTIQUAD? Loosing half my boot time messages is
annoying, and I have gigabytes of RAM to waste. Please .......

M.

diff -urN virgin-2.4.13-pre2/kernel/printk.c linux-2.4.13-pre2/kernel/printk.c
--- virgin-2.4.13-pre2/kernel/printk.c Mon Sep 17 13:16:30 2001
+++ linux-2.4.13-pre2/kernel/printk.c Mon Oct 15 13:15:37 2001
@@ -27,7 +27,12 @@

#include <asm/uaccess.h>

-#define LOG_BUF_LEN (16384) /* This must be a power of two */
+#ifdef CONFIG_MULTIQUAD
+#define LOG_BUF_LEN (65536) /* This must be a power of two */
+#else
+#define LOG_BUF_LEN (16384) /* This must be a power of two */
+#endif
+
#define LOG_BUF_MASK (LOG_BUF_LEN-1)

/* printk's without a loglevel use this.. */

-
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