On 3/25/2013 2:22 PM, Jason Wessel wrote:
> On 03/25/2013 01:50 PM, Mike Travis wrote:
>> Currently the default for the # of lines displayed by the KDB pager
>> is 24. This does not allow all of the lines for the entry messages,
>> reg dump and process trace. Increase it to something more reasonable.
>>
>
>
> Unfortunately this is something that breaks compatibility with the
> standard VGA console, so this patch will not be merged.
>
> Is it the case that your hardware specifies how many lines and columns
> there are in the display? We have some hooks into the console VT code
> to properly detect this but perhaps something is wrong there, or it is
> only called in the KMS (kernel mode setting case). Example:
> drivers/tty/vt/vt.c - look at con_debug_enter()
>
> Another option might be to add a variable which allows you to change
> the default at compile time, but I would prefer to get the auto detect
> code working properly if it is an option.
>
> Jason.
Nah, this was more of an annoyance before I added the "system nmi" entry
reason code, which changes the entry message to be more like it is for a
requested entry (like sysreq 'g') than it is for a real error which
dumps a ton of stuff. Our primary system console is a serial connection,
so we can't use the VT stuff (though the VT console is an option).
>
>
>
>> Cc: Tim Bird <tim.b...@am.sony.com>
>> Reviewed-by: Dimitri Sivanich <sivan...@sgi.com>
>> Signed-off-by: Mike Travis <tra...@sgi.com>
>> ---
>> kernel/debug/kdb/kdb_io.c | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> --- linux.orig/kernel/debug/kdb/kdb_io.c
>> +++ linux/kernel/debug/kdb/kdb_io.c
>> @@ -586,7 +586,7 @@ int vkdb_printf(const char *fmt, va_list
>>
>> diag = kdbgetintenv("LINES", &linecount);
>> if (diag || linecount <= 1)
>> - linecount = 24;
>> + linecount = 60;
>>
>> diag = kdbgetintenv("COLUMNS", &colcount);
>> if (diag || colcount <= 1)
>>
>> --
>>
>
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