-----Original Message-----
From: Thomas Monjalon <redacted>
Sent: Wednesday, July 7, 2021 2:32 PM
To: Ruifeng Wang <redacted>
Cc: Jan Viktorin <redacted>; jerinj@marvell.com; Bruce
Richardson [off-list ref]; dev@dpdk.org;
david.marchand@redhat.com; nd [off-list ref]; Honnappa Nagarahalli
[off-list ref]
Subject: Re: [PATCH v4 3/3] build: add option to enable wait until equal

07/07/2021 07:48, Ruifeng Wang:

quoted

Introduce a meson option 'use_wfe' to select wait until equal method.
The default is disable. Traditional polling loop is used.
When enabled, architecture specific mechanism is relied on to do the
wait.

Why do we need an option?
Can it be automatic to enable it when supported?

The problem is inconsistency in performance on different Arm platforms. We had decided that each platform needs to enable it after some testing.