-----Original Message-----
From: David Marchand <redacted>
Sent: Monday, July 5, 2021 4:52 PM
To: Ruifeng Wang <redacted>
Cc: Bruce Richardson <redacted>; Honnappa Nagarahalli
[off-list ref]; thomas@monjalon.net; dev
[off-list ref]; jerinj@marvell.com; nd [off-list ref]
Subject: Re: Use WFE for spinlock and ring

On Fri, May 7, 2021 at 12:24 PM Bruce Richardson
[off-list ref] wrote:

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The problem is inconsistency in performance on different Arm

platforms.

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We had decided that each platform needs to enable it after some

testing.

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Then it sounds like it does indeed need to be a build option. Does
it need to be added to the meson_options.txt, or can it just be
specified in cross-files and optionally via c_args?

Add it to the meson_options.txt is good as the option will be clearly

exposed.

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My concern is more options (e.g. RTE_ARCH_ARM64_MEMCPY) need to

be added in.

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Will the options bloat meson_options.txt?

That bloat would indeed become a concern. We may need to look at more
use of auto-detection and cross files for such options.

Ruifeng,

This series is blocked on this last topic.
Do you intend to send a n+1?

I think the best way to expose this config is adding it to meson_options.
Will send v4 to update.

--
David Marchand