Re: [Patch v5 0/9] liblockdep: userspace lockdep

From: Ingo Molnar
Date: Mon Jul 08 2013 - 04:39:23 EST



* Sasha Levin <sasha.levin@xxxxxxxxxx> wrote:

> >> The other issue is that with lock classes disabled you have to hit an
> >> actual deadlock to trigger any output.
> >>
> >> I.e. much of the power of lockdep is diminished :-/ When actual
> >> deadlocks are triggered then it's not particularly complex to debug
> >> user-space apps: gdb the hung task(s) and look at the backtraces.
> >
> > Lock classes are disabled only if you're using the LD_PRELOAD method
> > of testing. If you actually re-compile your code with the library (by
> > just including the header and setting a #define to enable it) you will
> > have lock classes.
>
> Hi Ingo,
>
> Just wondering if you're planning on pushing it over to Linus from your
> tree, or should I go ahead and do it on my own?

PeterZ is in favor as well so I'll apply them after the merge window, for
v3.12.

Thanks,

Ingo
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