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Groups > linux.kernel > #1739157 > unrolled thread
| Started by | Alexei Starovoitov <alexei.starovoitov@gmail.com> |
|---|---|
| First post | 2017-09-25 18:30 +0200 |
| Last post | 2017-09-26 10:40 +0200 |
| Articles | 3 — 3 participants |
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Re: [PATCH v3 00/20] Speculative page faults Alexei Starovoitov <alexei.starovoitov@gmail.com> - 2017-09-25 18:30 +0200
Re: [PATCH v3 00/20] Speculative page faults Andrew Morton <akpm@linux-foundation.org> - 2017-09-26 01:40 +0200
Re: [PATCH v3 00/20] Speculative page faults Laurent Dufour <ldufour@linux.vnet.ibm.com> - 2017-09-26 10:40 +0200
| From | Alexei Starovoitov <alexei.starovoitov@gmail.com> |
|---|---|
| Date | 2017-09-25 18:30 +0200 |
| Subject | Re: [PATCH v3 00/20] Speculative page faults |
| Message-ID | <utEqC-mA-23@gated-at.bofh.it> |
On Mon, Sep 18, 2017 at 12:15 AM, Laurent Dufour <ldufour@linux.vnet.ibm.com> wrote: > Despite the unprovable lockdep warning raised by Sergey, I didn't get any > feedback on this series. > > Is there a chance to get it moved upstream ? what is the status ? We're eagerly looking forward for this set to land, since we have several use cases for tracing that will build on top of this set as discussed at Plumbers.
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| From | Andrew Morton <akpm@linux-foundation.org> |
|---|---|
| Date | 2017-09-26 01:40 +0200 |
| Message-ID | <utL8J-4Uf-3@gated-at.bofh.it> |
| In reply to | #1739157 |
On Mon, 25 Sep 2017 09:27:43 -0700 Alexei Starovoitov <alexei.starovoitov@gmail.com> wrote: > On Mon, Sep 18, 2017 at 12:15 AM, Laurent Dufour > <ldufour@linux.vnet.ibm.com> wrote: > > Despite the unprovable lockdep warning raised by Sergey, I didn't get any > > feedback on this series. > > > > Is there a chance to get it moved upstream ? > > what is the status ? > We're eagerly looking forward for this set to land, > since we have several use cases for tracing that > will build on top of this set as discussed at Plumbers. There has been sadly little review and testing so far :( I'll be taking a close look at it all over the next couple of weeks. One terribly important thing (especially for a patchset this large and intrusive) is the rationale for merging it: the justification, usually in the form of end-user benefit. Laurent's [0/n] provides some nice-looking performance benefits for workloads which are chosen to show performance benefits(!) but, alas, no quantitative testing results for workloads which we may suspect will be harmed by the changes(?). Even things as simple as impact upon single-threaded pagefault-intensive workloads and its effect upon CONFIG_SMP=n .text size? If you have additional usecases then please, spell them out for us in full detail so we can better understand the benefits which this patchset provides.
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| From | Laurent Dufour <ldufour@linux.vnet.ibm.com> |
|---|---|
| Date | 2017-09-26 10:40 +0200 |
| Message-ID | <utTzm-2jm-75@gated-at.bofh.it> |
| In reply to | #1739157 |
Hi Alexei, Le 25/09/2017 à 18:27, Alexei Starovoitov a écrit : > On Mon, Sep 18, 2017 at 12:15 AM, Laurent Dufour > <ldufour@linux.vnet.ibm.com> wrote: >> Despite the unprovable lockdep warning raised by Sergey, I didn't get any >> feedback on this series. >> >> Is there a chance to get it moved upstream ? > > what is the status ? As mentioned by Andrew this lacks review and test, what about your Ack/Review/Tested-By ? > We're eagerly looking forward for this set to land, > since we have several use cases for tracing that > will build on top of this set as discussed at Plumbers. Unfortunately I was not able to attend Plumbers this year, but I'll be pleased, as well as the MM mailing readers, to get your feedback and use cases of this series. Thanks, Laurent.
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