[None][test] Add pure -Perf- stage exclusion in CBTS logic

[yufeiwu-nv]

Introduced a new function to identify pure -Perf- stages and updated the main processing logic to exclude these stages from the affected stages list.

Currently, whether to prune --Perf- Stage is aligned.

Enhanced logging to include details about excluded stages for better diagnostics in Jenkins console output.

Signed-off-by: yufeiwu-nv 230315618+yufeiwu-nv@users.noreply.github.com

Summary by CodeRabbit

• Bug Fixes
  • Improved affected-stage detection by excluding stages that are exclusively performance-related when they do not require testing.
  • Updated diagnostic output to clearly identify performance stages excluded from the results.

Description

Test Coverage

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[yufeiwu-nv]

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📥 Commits

Reviewing files that changed from the base of the PR and between 5603308 and eec6b5d.

📒 Files selected for processing (1)

• jenkins/scripts/cbts/main.py

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📝 Walkthrough

Walkthrough

Changes

CBTS performance-stage filtering

Layer / File(s)	Summary
Pure performance stage filtering jenkins/scripts/cbts/main.py	Adds detection for -Perf- stages, excluding -PerfSanity-, and removes pure performance stages from result.affected_stages.
Exclusion diagnostic reporting jenkins/scripts/cbts/main.py	Passes excluded stages to _log_decision_to_stderr and reports their count and names when present.

Estimated code review effort: 2 (Simple) | ~10 minutes

Suggested reviewers: mlefeb01, dpitman-nvda

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title is specific and matches the main change: excluding pure -Perf- stages from CBTS logic.
Description check	✅ Passed	The description explains the change and checklist, but it omits the required Test Coverage section.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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