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Date: Mon, 23 Dec 2013 20:37:14 -0800
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Subject: Re: A tweak to HWPMC hooks to improve code generation
From: Adrian Chadd <adrian@freebsd.org>
To: "Rang, Anton" <anton.rang@isilon.com>
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Hm! Cool! I'll give this a spin tomorrow on my
frequently-very-lock-busy boxes and get back to you.


-a

On 23 December 2013 09:52, Rang, Anton <anton.rang@isilon.com> wrote:
> The HWPMC hooks are never invoked except when using the soft PMC feature =
for performance monitoring. This trivial patch hints as much to the compile=
r, which then moves some fairly lengthy code sequences out of the locking p=
rimitives (in particular), reducing their runtime footprint.
>
> This patch was reviewed by Attilio Rao.
>
> Anton
>
>
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