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Re: [PATCH -tip 00/12] locking/atomics: Add and use inc,dec calls for FETCH-OP flavors

From Davidlohr Bueso <dave@stgolabs.net>
Newsgroups linux.kernel
Subject Re: [PATCH -tip 00/12] locking/atomics: Add and use inc,dec calls for FETCH-OP flavors
Date 2016-06-24 21:40 +0200
Message-ID <rNF7j-3VP-5@gated-at.bofh.it> (permalink)
References <rMdG9-4no-3@gated-at.bofh.it> <rNCsN-28b-7@gated-at.bofh.it> <rNDfb-2Hg-5@gated-at.bofh.it> <rNDIe-3c2-13@gated-at.bofh.it>
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On Fri, 24 Jun 2016, KY Srinivasan wrote:

>How so? Can you expand on the racy part. The subtraction is done on a local copy of
>the value.

Yeah, you're right. I took a look at the generated code and I was unnecessarily worried
about the window between the return value and the subtraction.

Thanks,
Davidlohr

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Re: [PATCH -tip 00/12] locking/atomics: Add and use inc,dec calls  for FETCH-OP flavors James Bottomley <James.Bottomley@HansenPartnership.com> - 2016-06-24 18:50 +0200
  Re: [PATCH -tip 00/12] locking/atomics: Add and use inc,dec calls  for FETCH-OP flavors Davidlohr Bueso <dave@stgolabs.net> - 2016-06-24 19:40 +0200
    Re: [PATCH -tip 00/12] locking/atomics: Add and use inc,dec calls  for FETCH-OP flavors James Bottomley <James.Bottomley@HansenPartnership.com> - 2016-06-24 19:50 +0200
      Re: [PATCH -tip 00/12] locking/atomics: Add and use inc,dec calls  for FETCH-OP flavors Davidlohr Bueso <dave@stgolabs.net> - 2016-06-24 22:40 +0200
    RE: [PATCH -tip 00/12] locking/atomics: Add and use inc,dec calls for  FETCH-OP flavors KY Srinivasan <kys@microsoft.com> - 2016-06-24 20:10 +0200
      Re: [PATCH -tip 00/12] locking/atomics: Add and use inc,dec calls  for FETCH-OP flavors Davidlohr Bueso <dave@stgolabs.net> - 2016-06-24 21:40 +0200
  Re: [PATCH -tip 00/12] locking/atomics: Add and use inc,dec calls  for FETCH-OP flavors Peter Zijlstra <peterz@infradead.org> - 2016-06-24 21:20 +0200

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