Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

[6.12] Track PF uksmd patches #37

Draft
wants to merge 2 commits into
base: base-6.12
Choose a base branch
from
Draft

[6.12] Track PF uksmd patches #37

wants to merge 2 commits into from

Conversation

kakra
Copy link
Owner

@kakra kakra commented Nov 23, 2024

Export patch series: https://github.com/kakra/linux/pull/37.patch

  • post-factum KSM patches: for use with uksmd, merges identical memory pages to reduce cache and memory pressure, useful when running similar containers in parallel

d7597f5 added a new API to enable per-process KSM control. It
however uses prctl, which doesn't allow controlling KSM from outside of
the current process.

Hence, expose this API via 3 syscalls: process_ksm_enable,
process_ksm_disable and process_ksm_status. Given sufficient privileges,
auto-KSM can be enable by another process.

Since these syscalls are not in the upstream kernel, also expose their
numbers under /sys/kernel/process_ksm so that userspace tooling like
uksmd knows how to use them.

Signed-off-by: Oleksandr Natalenko <[email protected]>
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Labels
None yet
Projects
None yet
Development

Successfully merging this pull request may close these issues.

2 participants