Re: [PATCH v3 2/2] Make hard lockup detection use timestamps

[ZAK Magnus]

An update:

I realized that the timing function I was using was no good. On x86 it
will try to use the TSC but if it can't (which, as I understand, isn't
a very rare case), it will fall back on a jiffies-based solution. If
interrupts are disabled, time would appear to "stand still" and
lockups wouldn't be detected. So, looks like I have to nix this
particular patch and not change the hard lockup detection that much.

Meanwhile, I'm working on printing stack traces to a buffer/out to
file. I got some help and it looks like it's not that hard to do. I'll
send it when it's ready.
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