issue: flag for adding epfd to inter thread epoll

[iftahl]

Description

Please provide a summary of the change.

What

Subject: what this PR is doing in one line.

Why ?

Justification for the PR. If there is existing issue/bug please reference.

How ?

It is optional but for complex PRs please provide information about the design,
architecture, approach, etc.

Change type

What kind of change does this PR introduce?

• Bugfix
• Feature
• Code style update
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Documentation content changes
• Tests
• Other

Check list

• Code follows the style de facto guidelines of this project
• Comments have been inserted in hard to understand places
• Documentation has been updated (if necessary)
• Test has been added (if possible)

[iftahl]

bot:retest