SMP kernels /w POLLING enabled - combination garbles(syncer?) console line message(s) on reboot

Steven Hartland killing at
Sat Jan 26 06:53:08 PST 2008

----- Original Message ----- 
From: "Kris Kennaway" <kris at>

>> ----- Original Message ----- From: "Kris Kennaway" <kris at>
>>> It's harmless (actually a sign of increased concurrency); two threads 
>>> are running printf concurrently.  Add options PRINTF_BUFR_SIZE=[...] 
>>> if you don't want to see this.
>> Surely if it was just concurrency it would just be the messages jumbled
>> and not totally corrupt as though some buffer overrun had happened?
> Hard to say since I dont think you defined or gave an example of 
> "garbled" :)

I'm just building a kernel with PRINTF_BUFR_SIZE=128 is this the recommended
value? I'll see if that fixes it but what I've seen is a mixture of what
looks like jumbled chars and total Greek i.e. none a-zA-Z0-9... chars.

I'll look to get a screen shot of the console if I can reproduce reliably.

Thanks for the quick answers :)


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