8312585: Rename DisableTHPStackMitigation flag to THPStackMitigation

[tstuefe]

Clean backport. 8312182 introduced a mitigation for THP-related RSS bloat; it came with a switch to switch it off. We then decided to rename the switch. Since the switch should be the same across all releases, this needs to be backported too.

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Progress

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Issue

• JDK-8312585: Rename DisableTHPStackMitigation flag to THPStackMitigation (Enhancement - P4)

Reviewing

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[bridgekeeper]

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[openjdk]

This backport pull request has now been updated with issue from the original commit.

[openjdk]

@tstuefe This change now passes all automated pre-integration checks.

ℹ️ This project also has non-automated pre-integration requirements. Please see the file CONTRIBUTING.md for details.

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8312585: Rename DisableTHPStackMitigation flag to THPStackMitigation

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[mlbridge]

Webrevs

• 00: Full (31e52971)

[tstuefe]

Tests green, push approval given.

/integrate

[openjdk]

Going to push as commit eb639a2.

[openjdk]

@tstuefe Pushed as commit eb639a2.

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