Re: [patch] x86, perf_counter, bts: optimize BTS overflow handling

[Pavel Machek]

On Tue 2009-09-08 08:31:10, Markus Metzger wrote:
> Draining the BTS buffer on a buffer overflow interrupt takes too long
> resulting in a kernel lockup when tracing the kernel.

Wait. If 'takes too long' leads to 'lockup'...solution is not making
it faster. Solution should be making kernel robust -- maybe disable
tracing when it can't keep up or something...? or maybe disabling
interrupt until you handle the previous one...?
								Pavel 



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