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From: Martin Galvan <omgalvan.86@gmail.com>
Date: Mon, 09 Jan 2017 19:37:00 -0000
Message-ID: <CAN19L9EY2607SoxOBPYKpV7cyc1rg+Ma7Yv50xjnFQqKaMrm+g@mail.gmail.com>
Subject: Re: [PATCH v11] Add pretty printers for the NPTL lock types
To: Torvald Riegel <triegel@redhat.com>
Cc: siddhesh@sourceware.org, Joseph Myers <joseph@codesourcery.com>, 
	libc-alpha@sourceware.org
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2017-01-06 18:58 GMT-03:00 Torvald Riegel <triegel@redhat.com>:
> Did you test with or without lock elision?

Good point! I never explicitly enabled lock elision when running
configure. However, I just ran the tests having set
--enable-lock-elision=yes and it's still working for me (though I
don't know why-- how deterministic is lock elision? I just tested this
on a Haswell machine). However, maybe that's what's causing the owner
ID to be 0 in your case. I'll see about fixing the mutex test to
support lock elision and send a patch for you guys to test.

Thanks!