Re: [PATCH] futex: add FUTEX_SET_WAIT operation

[Darren Hart]

Peter Zijlstra wrote:
> On Tue, 2009-11-17 at 09:18 +0100, Ingo Molnar wrote:
> > Would you be interested in adding it as a 'perf bench futex' testcase? 
> > That way kernel developers could monitor futex performance in the future 
> > as well.
> >
> > See 'perf bench' in the latest perf events tree:
> >
> >   http://people.redhat.com/mingo/tip.git/README
> >
> > Do 'cd tools/perf; make -j install' to install perf.
>
> Darren has recently been putting a lot of effort in making a futex test
> suite:
>
> http://git.kernel.org/?p=linux/kernel/git/dvhart/futextest.git
>
> Its not yet complete, but hopefully it will soon be :-)

Michael, would you be willing to include a version of this test in the 
above test suite? If so, then in keeping with the rest of the test 
suite, I would recommend splitting into two tests, one of each opcode 
being tested, and  add argument to define thread count. The run.sh 
script would then run each thread count as a separate test run.

--
Darren Hart
IBM Linux Technology Center
Real-Time Linux Team
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