Re: [PATCH] trim memory not covered by WB MTRRs

[Justin Piszcz <jpiszcz@lucidpixels.com>]

On Wed, 6 Jun 2007, Jesse Barnes wrote:

> On Wednesday, June 6, 2007 3:26 pm Justin Piszcz wrote:
> > Nope, I booted with only netconsole= options.  I have a lot of HW in
> > the box and I guess the buffer is too small.  Not sure where to
> > change it in the kernel.  Looking..
>
> It's called "kernel log buffer size" and it's in "General setup".
>
> Jesse

I was reviewing some OLD mailing list archives then!

--------------

Per: http://www.edlug.ed.ac.uk/archive/Aug2003/msg00270.html

The kernel has a cyclic buffer of length LOG_BUF_LEN (4096, since 1.3.54:
8192, since 2.1.113: 16384; in
       recent kernels the size can be set at compile time) in which 
messages
given as argument  to  the  kernel
       function printk() are stored (regardless of their loglevel).

So it doesn't look like you can without recompiling...

Bruce

--------------

Getting you the E820 memory map in a few moments.


Changed from 15 -> 16.

  | |    (16) Kernel log buffer size (16 => 64KB, 17 => 128KB)


Justin.
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