[all-commits] [llvm/llvm-project] 173514: [libc] Disable epoll_pwait2 for now. (#99967)

[Michael Jones via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 173514ff129620364ac0ed61027e81194d997d76
      https://github.com/llvm/llvm-project/commit/173514ff129620364ac0ed61027e81194d997d76
  Author: Michael Jones <michaelrj at google.com>
  Date:   2024-07-22 (Mon, 22 Jul 2024)

  Changed paths:
    M libc/config/linux/riscv/entrypoints.txt
    M libc/config/linux/x86_64/entrypoints.txt
    M libc/src/sys/epoll/linux/epoll_pwait2.cpp

  Log Message:
  -----------
  [libc] Disable epoll_pwait2 for now. (#99967)

This patch reverts #99781 and part of #99771 since `epoll_pwait2` is not
in fact available on all supported systems. It is my opinion that we
shouldn't provide a version of a function that doesn't perform as
expected, which is why this revert needs to happen.

The `epoll_pwait2` function can be reenabled when we have a way to check
if it is available on the target system, tracking bug for that is #80060



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