svn commit: r194204 - in head/sys: amd64/conf i386/conf

Sam Leffler sam at
Mon Jun 15 00:49:44 UTC 2009

Bruce Evans wrote:
> On Sun, 14 Jun 2009, Sam Leffler wrote:
>>> Log:
>>>   Enable PRINTF_BUFR_SIZE on i386 and amd64 by default.
>>>   In the past there have been some reports of PRINTF_BUFR_SIZE not
>>>   functioning correctly. Instead of having garbled console messages, we
>>>   should just see whether the issues are still there and analyze them.
>> When I suggested enabling this by default for SMP configurations I was
>> reminded it wasn't enabled because of potential stack overflow.
> Stack overflow shouldn't be a problem, since printf shouldn't be called
> recursively.  

You don't need recursion to overflow the stack.  I'd love to see someone 
properly lock printf/console output instead of kludges like 


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