** Changed in: ubuntu-power-systems
Status: In Progress => Fix Released
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https://bugs.launchpad.net/bugs/1709220
Title:
RPT related fixes missing in Ubuntu 16.04.3
Status in The Ubuntu-power-systems project:
Fix Released
Status in linux package in Ubuntu:
Fix Released
Status in linux source package in Zesty:
Fix Released
Bug description:
== SRU Justification ==
These four commits are Radix performance patches specific to powerpc.
The patches are reported to help anywhere from 40% up to 3.5X on
unixbench fork/exec testcases.
The first patch was included in mainlne as of 4.12-rc1. The last three
patches are
still in linux-next.
---Problem Description---
The following patches are missing in the ubuntu 16.04.3 kernel
https://lists.ozlabs.org/pipermail/linuxppc-dev/2017-April/156104.html
https://lists.ozlabs.org/pipermail/linuxppc-dev/2017-April/156105.html
https://lists.ozlabs.org/pipermail/linuxppc-dev/2017-April/157130.html
---uname output---
4.10.0-29-generic #33~16.04.1-Ubuntu SMP Tue Jul 25 18:17:06 UTC 2017
ppc64le ppc64le ppc64le GNU/Linux
Machine Type = power9
---Steps to Reproduce---
Did a fork and exec benchmark to look at the performance and they
pointed to radix routines.
Upstream commits mentioned:
commit f7327e0ba3805470cced2acfa053e795362ee41d
powerpc/mm/radix: Remove unnecessary ptesync
commit f6b0df55cad252fedd60aa2ba75a0207d0006283
powerpc/mm/radix: Don't do page walk cache flush when doing full mm
flush
commit a5998fcb92552a18713b6aa5c146aa400e4d75ee
powerpc/mm/radix: Optimise tlbiel flush all case
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