Re: [PATCH 0/5] v2: block subsystem refcounter conversions

From	Jens Axboe <axboe@kernel.dk>
Newsgroups	linux.kernel
Subject	Re: [PATCH 0/5] v2: block subsystem refcounter conversions
Date	2017-04-21 19:10 +0200
Message-ID	<tyKed-8vc-5@gated-at.bofh.it> (permalink)
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On 04/21/2017 09:22 AM, Peter Zijlstra wrote:
> On Fri, Apr 21, 2017 at 08:03:13AM -0600, Jens Axboe wrote:
>> You have it so easy - the code is completely standalone, building a
>> small test framework around it and measuring performance in _user space_
>> is trivial.
> 
> Something like this you mean:
> 
>   https://lkml.kernel.org/r/20170322165144.dtidvvbxey7w5pbd@hirez.programming.kicks-ass.net

Yes, exactly. But it'd be great to see better coverage of the API, and
various cases of X threads running operations on the same refcount,
so we get a full view of that side too. The above looks like just
counting cycles for a single op of foo_inc().

-- 
Jens Axboe

Thread

[PATCH 0/5] v2: block subsystem refcounter conversions Elena Reshetova <elena.reshetova@intel.com> - 2017-04-20 13:30 +0200
  [PATCH 2/5] block: convert blk_queue_tag.refcnt from atomic_t to refcount_t Elena Reshetova <elena.reshetova@intel.com> - 2017-04-20 13:40 +0200
  [PATCH 3/5] block: convert blkcg_gq.refcnt from atomic_t to refcount_t Elena Reshetova <elena.reshetova@intel.com> - 2017-04-20 13:40 +0200
  Re: [PATCH 0/5] v2: block subsystem refcounter conversions Christoph Hellwig <hch@infradead.org> - 2017-04-20 16:00 +0200
    RE: [PATCH 0/5] v2: block subsystem refcounter conversions "Reshetova, Elena" <elena.reshetova@intel.com> - 2017-04-20 18:20 +0200
      Re: [PATCH 0/5] v2: block subsystem refcounter conversions Eric Biggers <ebiggers3@gmail.com> - 2017-04-20 20:40 +0200
        RE: [PATCH 0/5] v2: block subsystem refcounter conversions "Reshetova, Elena" <elena.reshetova@intel.com> - 2017-04-21 13:00 +0200
          Re: [PATCH 0/5] v2: block subsystem refcounter conversions Jens Axboe <axboe@kernel.dk> - 2017-04-21 16:10 +0200
            Re: [PATCH 0/5] v2: block subsystem refcounter conversions Jens Axboe <axboe@kernel.dk> - 2017-04-21 19:10 +0200
            Re: [PATCH 0/5] v2: block subsystem refcounter conversions Peter Zijlstra <peterz@infradead.org> - 2017-04-21 19:10 +0200
          Re: [PATCH 0/5] v2: block subsystem refcounter conversions Kees Cook <keescook@chromium.org> - 2017-04-21 21:30 +0200
          Re: [PATCH 0/5] v2: block subsystem refcounter conversions Eric Biggers <ebiggers3@gmail.com> - 2017-04-21 22:00 +0200
            Re: [PATCH 0/5] v2: block subsystem refcounter conversions Kees Cook <keescook@chromium.org> - 2017-04-21 22:30 +0200
              Re: [PATCH 0/5] v2: block subsystem refcounter conversions James Bottomley <James.Bottomley@HansenPartnership.com> - 2017-04-21 23:30 +0200
                Re: [PATCH 0/5] v2: block subsystem refcounter conversions Kees Cook <keescook@chromium.org> - 2017-04-21 23:40 +0200
                Re: [PATCH 0/5] v2: block subsystem refcounter conversions James Bottomley <James.Bottomley@HansenPartnership.com> - 2017-04-22 00:10 +0200
        Re: [PATCH 0/5] v2: block subsystem refcounter conversions Christoph Hellwig <hch@infradead.org> - 2017-04-21 13:00 +0200

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