linuxppc / linuxppc/issues

Investigate KFUNC/KRETFUNC support

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enhancement need info
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Description

A new way of calling into BPF called KFUNC/KRETFUNC was added recently. We should investigate if it will lower the cost of making BPF calls on PowerPC

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

No files or tests are named. Start by researching the existing BPF call path on PowerPC and the KFUNC/KRETFUNC implementation, then compare their call costs. Done means documenting whether this can reduce BPF call overhead and identifying the concrete work needed.

Written by the indexing model from the issue text.

Assessment

Domain
operating-systems
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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