This reverts commit cb6e74a094.
Reason for revert: This CL itself is fine, but b:249692652 reported
that virtio-console has been broken with epoll executor. cb6e74a0 also makes this broken virtio-console, which is confusing for users of virtio-console. cb6e74a0 can be merged again with the workaround for the default executor or after b:249692652 is fixed.
Original change's description:
> cros_async: add a command-line option to switch Executor backend
>
> Currently Executor internally decides which backend to use, such as
> FdExecutor vs URingExecutor on Linux. This makes it hard to test both
> FdExecutor and URingExecutor. In addition, we came across the uring
> instability issue (b:238965061), thus we need a way to explicitly switch
> the polling backend to mitigate the issue.
>
> This commit adds a command-line option to explicitly configure the
> Executor's polling backend.
>
> BUG=b:239154263
> TEST=confirmed crosvm --async-executor correcly switchs the Executor for
> `crosvm --async-executor epoll (or uring) device gpu --socket
> /tmp/gpu.sock` command. Used additional debug log to tell which executor
> is running, which is not commited
>
> Change-Id: Ib310d9edc8ab6005f1b7f210b03668b9a45fa73f
> Reviewed-on: https://chromium-review.googlesource.com/c/crosvm/crosvm/+/3811014
> Reviewed-by: Keiichi Watanabe <keiichiw@chromium.org>
> Commit-Queue: Takaya Saeki <takayas@chromium.org>
> Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
> Reviewed-by: Noah Gold <nkgold@google.com>
Bug: b:239154263
Bug: b:249692652
Change-Id: I15f575597534cea6004bca4679245ef958bbe1e6
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/crosvm/crosvm/+/3925329
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Reviewed-by: Alexandre Courbot <acourbot@chromium.org>
Commit-Queue: Alexandre Courbot <acourbot@chromium.org>
03fdffb447