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Groups > linux.kernel > #1661907
| From | Manfred Spraul <manfred@colorfullife.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH v2] refcount: Create unchecked atomic_t implementation |
| Date | 2017-06-09 06:30 +0200 |
| Message-ID | <tQjIB-5hD-1@gated-at.bofh.it> (permalink) |
| References | <tPVPX-6Nn-3@gated-at.bofh.it> <tPZAf-Nh-29@gated-at.bofh.it> <tQ0wh-1oo-1@gated-at.bofh.it> <tQbUJ-nj-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
Hi Davidlohr,
On 06/08/2017 10:09 PM, Davidlohr Bueso wrote:
>
> Yes, this would be a prerequisite for ipc; which I initially thought
> didn't
> take a performance hit.
>
Did you see a regression for ipc?
The fast paths don't use the refcount, it is only used for rare situations:
- GETALL, SETALL for large arrays
- alloc undo
--
Manfred
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[PATCH v2] refcount: Create unchecked atomic_t implementation Kees Cook <keescook@chromium.org> - 2017-06-08 05:00 +0200
Re: [PATCH v2] refcount: Create unchecked atomic_t implementation Greg KH <gregkh@linuxfoundation.org> - 2017-06-08 08:00 +0200
Re: [PATCH v2] refcount: Create unchecked atomic_t implementation Christoph Hellwig <hch@infradead.org> - 2017-06-08 09:00 +0200
RE: [PATCH v2] refcount: Create unchecked atomic_t implementation "Reshetova, Elena" <elena.reshetova@intel.com> - 2017-06-08 10:00 +0200
Re: [PATCH v2] refcount: Create unchecked atomic_t implementation Davidlohr Bueso <dave@stgolabs.net> - 2017-06-08 22:10 +0200
Re: [PATCH v2] refcount: Create unchecked atomic_t implementation Manfred Spraul <manfred@colorfullife.com> - 2017-06-09 06:30 +0200
Re: [PATCH v2] refcount: Create unchecked atomic_t implementation Peter Zijlstra <peterz@infradead.org> - 2017-06-09 09:30 +0200
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