Automate regular x86-64 stable RT kernel Upgrade by jatinjb444 · Pull Request #345 · ni/nilrt

jatinjb444 · 2026-04-09T06:30:42Z

Changes

#work item - 3181494
https://dev.azure.com/ni/DevCentral/_workitems/edit/3181494

This PR automates fetching and merging the latest stable‑RT kernel tags into the NI Linux Real‑Time branch. It includes clean repository setup, RT merge, kernel build, deployment, and driver rebuild integration using SSHFS and DKMS. Additionally it also include defconfig regeneration and PR creation automatically once the script ran sucessfully and also sends an email to notify the user about the result status.

Justification

The RT kernel upgrade process involves multiple manual steps and is error-prone. This automation streamlines the workflow, improves reliability, and ensures consistent execution across runs.

Testing

Verified RT tag detection and merge
Successfully built and installed kernel on target
Confirmed reboot and kernel update using uname -r
Validated network functionality post-reboot
Verified SSHFS mount, header preparation, and DKMS rebuild
Confirmed driver status using dkms status

Process

Suggested Reviewers:
@rajendra-desai-ni
@Shreejit-03
@ni/rtos

Shreejit-03 · 2026-04-24T04:47:44Z

Please run flake8 ( python3 -m flake8 ) on all the python files and fix all the issues we can. Some of them could be fixed by running black (python3 -m black ).

rajendra-desai-ni

This commit doesn't have a proper title.
Remove "Finalized" word from the PR title.
Add AB work item in the PR description.
You don't have to add 'Updates' section in the PR description. All the updates should go into their respective work items.
Try to follow 'Summary', 'Justification', and 'Testing' section in the PR description which is cleaner compared to existing sections.

chaitu236

Convention for commit message header is "recipe/subsystem: commit header". This lets us know just by looking at a commit header which files/subsystem/recipe a commit is touching.

Please edit the commit messages to follow this pattern.

E.g., like
upstream_merge: Refactor build logic and clean up scripts

Also we try to keep commit header not too long (50 chars is ideal but we regularly go beyond that if we can't fit in 50 chars).
Following commit will become too long though, try to see if we can shorten it.

upstream_merge: Merge stable RT patches, build kernel, and validate target deployment this will become very long.

- Add automation for stable RT kernel merge from upstream - Implement kernel build, module install and target deployment - Integrate toolchain setup and environment initialization - Add kernel version verification using uname after reboot - Add driver rebuild flow with DKMS and SSHFS support Signed-off-by: Jatin Bharti <jatin.bharti@emerson.com>

- Add defconfig regeneration with change detection logic - Implement gated PR creation after successful workflow - Add PR metadata generation including work item and summary - Ensure PR creation only on successful merge and validation Signed-off-by: Jatin Bharti <jatin.bharti@emerson.com>

- Extract driver rebuild into dedicated helper function - Move PR creation logic into separate function - Remove redundant variables and unify toolchain handling - Improve logging, validation and error handling - Align code and commit structure with project conventions Signed-off-by: Jatin Bharti <jatin.bharti@emerson.com>

jatinjb444 force-pushed the dev branch 6 times, most recently from dbeefde to e0fcb85 Compare May 5, 2026 05:45

jatinjb444 changed the title ~~Finalized fetch and merge script for rt-tags~~ Finalized Automation scripts for x86-64 RT kernel Upgrade May 7, 2026

jatinjb444 force-pushed the dev branch 4 times, most recently from 4709c45 to 34fd7ec Compare May 11, 2026 05:59