[PATCH v10 1/2] mempool cache: add zero-copy get and put functions

[Morten Brørup]

> From: Morten Brørup [mailto:mb at smartsharesystems.com]
> Sent: Wednesday, 7 June 2023 15.43
> 
> > From: Thomas Monjalon [mailto:thomas at monjalon.net]
> > Sent: Wednesday, 7 June 2023 14.32
> >
> > 07/06/2023 14:04, Morten Brørup:
> > > > From: Thomas Monjalon [mailto:thomas at monjalon.net]
> > > > Sent: Wednesday, 7 June 2023 12.32
> > > >
> > > > 24/02/2023 19:10, Kamalakshitha Aligeri:
> > > > > From: = Morten Brørup <mb at smartsharesystems.com>
> > > >
> > > > There is an equal sign inserted above.
> > >
> > > Could be removed while applying?
> >
> > Better to fix in next version.
> 
> AFAIK, there are no other outstanding issues with this series (the patchwork
> warnings/errors [1] were bogus, except the inserted equal sign), and thus no
> next version pending. Mempool maintainers @Olivier and @Andrew, please speak
> up if you disagree!
> 
> [1]: https://patchwork.dpdk.org/project/dpdk/list/?series=27175
> 
> Mold has been slowly growing on the patch, so the comment in the version.map
> file also needs to be updated from "added in 23.03" to "added in 23.07". Could
> also be changed while applying. ;-)
> 
> >
> > > > > Zero-copy access to mempool caches is beneficial for PMD performance,
> > and
> > > > > must be provided by the mempool library to fix [Bug 1052] without a
> > > > > performance regression.
> > > > >
> > > > > [Bug 1052]: https://bugs.dpdk.org/show_bug.cgi?id=1052
> > > > >
> > > > > Bugzilla ID: 1052
> > > >
> > > > It would be fun if the bug content was a link to an email :)
> > > > More fun: refer to a place which will be deleted in some time.
> > > > Really, please explain the problem in the patch.
> > > > You can refer to the Bugzilla, but the idea must be in the patch.
> > > > Then no need for the full link.
> > > >
> > > >
> > >
> > > OK, how about this:
> > >
> > > Zero-copy access to mempool caches is beneficial for PMD performance.
> > >
> > > Furthermore, having a zero-copy mempool API is considered a precondition
> for
> > fixing a certain category of bugs, present in some PMDs: For performance
> > reasons, some PMDs had bypassed the mempool API in order to achieve zero-
> copy
> > access to the mempool cache. This can only be fixed in those PMDs without a
> > performance regression if the mempool library offers zero-copy access APIs,
> so
> > the PMDs can use the proper mempool API instead of copy-pasting code from
> the
> > mempool library. Furthermore, the copy-pasted code in those PMDs has not
> been
> > kept up to date with the improvements of the mempool library, so when they
> > bypass the mempool API, mempool trace is missing and mempool statistics is
> not
> > updated.
> > >
> > > Bugzilla ID: 1052
> >
> > Looks good, thanks.
> >

@Kamalakshitha,

Please send v11 of the series with the requested changes:
1. Remove "=" from the From line.
2. Update the patch 1/2 description to the text above.
3. Update the version from 23.03 to 23.07 in the version.map file.

Thanks.