performance: mm/memcontrol.c: remove the redundant updating of stats_flush_threshold
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Invalid
|
Undecided
|
Philip Cox | ||
Jammy |
Fix Released
|
Medium
|
Philip Cox |
Bug Description
This is a public version of https:/
Backport upstream commit:
873f64b791a2 mm/memcontrol.c: remove the redundant updating of stats_flush_
to jammy.
[Impact]
Remove the redundant updating of stats_flush_
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.
CVE References
Changed in linux (Ubuntu Jammy): | |
assignee: | nobody → Philip Cox (philcox) |
Changed in linux (Ubuntu): | |
status: | New → In Progress |
Changed in linux (Ubuntu Jammy): | |
status: | New → In Progress |
Changed in linux (Ubuntu): | |
status: | In Progress → Invalid |
Changed in linux (Ubuntu Jammy): | |
importance: | Undecided → Medium |
status: | In Progress → Fix Committed |
tags: |
added: verification-passed-focal-linux-aws-5.15 verification-passed-jammy-linux verification-passed-jammy-linux-aws-fips removed: verification-needed-focal-linux-aws-5.15 verification-needed-jammy-linux verification-needed-jammy-linux-aws-fips |
tags: |
added: verification-passed-focal-linux-nvidia-tegra-5.15 verification-passed-jammy-linux-nvidia-tegra removed: verification-needed-focal-linux-nvidia-tegra-5.15 verification-needed-jammy-linux-nvidia-tegra |
tags: |
added: verification-done-focal-linux-aws-5.15 verification-done-focal-linux-nvidia-tegra-5.15 verification-done-jammy-linux verification-done-jammy-linux-aws-fips verification-done-jammy-linux-nvidia-tegra removed: verification-passed-focal-linux-aws-5.15 verification-passed-focal-linux-nvidia-tegra-5.15 verification-passed-jammy-linux verification-passed-jammy-linux-aws-fips verification-passed-jammy-linux-nvidia-tegra |
This bug is awaiting verification that the linux/5. 15.0-102. 112 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification- needed- jammy-linux' to 'verification- done-jammy- linux'. If the problem still exists, change the tag 'verification- needed- jammy-linux' to 'verification- failed- jammy-linux' .
If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.
See https:/ /wiki.ubuntu. com/Testing/ EnableProposed for documentation how to enable and use -proposed. Thank you!