Public bug reported: This is a public version of https://bugs.launchpad.net/bugs/2034981
Backport upstream commit: 873f64b791a2 mm/memcontrol.c: remove the redundant updating of stats_flush_threshold to jammy. [Impact] Remove the redundant updating of stats_flush_threshold. If the global var stats_flush_threshold has exceeded the trigger value for __mem_cgroup_flush_stats, further increment is unnecessary. This is targeting Sapphire Rapids platforms. [Fix] Upstream commit 873f64b791a2 fixes this issue. The fix involves not updating the status after a certain threshold has been hit as it is unnecessary. [Test Plan] I have tested the changes, and hit no regressions. [Where problems could occur] As the change has been upstream since 6.0-rc1, and is reducing a stats update which isn't needed, the change for regressions should be minimal. ** Affects: linux (Ubuntu) Importance: Undecided Assignee: Philip Cox (philcox) Status: In Progress ** Affects: linux (Ubuntu Jammy) Importance: Undecided Assignee: Philip Cox (philcox) Status: In Progress ** Also affects: linux (Ubuntu Jammy) Importance: Undecided Status: New ** Changed in: linux (Ubuntu Jammy) Assignee: (unassigned) => Philip Cox (philcox) ** Changed in: linux (Ubuntu) Status: New => In Progress ** Changed in: linux (Ubuntu Jammy) Status: New => In Progress -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2052827 Title: performance: mm/memcontrol.c: remove the redundant updating of stats_flush_threshold Status in linux package in Ubuntu: In Progress Status in linux source package in Jammy: In Progress Bug description: This is a public version of https://bugs.launchpad.net/bugs/2034981 Backport upstream commit: 873f64b791a2 mm/memcontrol.c: remove the redundant updating of stats_flush_threshold to jammy. [Impact] Remove the redundant updating of stats_flush_threshold. If the global var stats_flush_threshold has exceeded the trigger value for __mem_cgroup_flush_stats, further increment is unnecessary. This is targeting Sapphire Rapids platforms. [Fix] Upstream commit 873f64b791a2 fixes this issue. The fix involves not updating the status after a certain threshold has been hit as it is unnecessary. [Test Plan] I have tested the changes, and hit no regressions. [Where problems could occur] As the change has been upstream since 6.0-rc1, and is reducing a stats update which isn't needed, the change for regressions should be minimal. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2052827/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp