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Date:      Fri, 19 Nov 2010 16:39:07 +0200
From:      Andriy Gapon <avg@freebsd.org>
To:        freebsd-acpi@freebsd.org, freebsd-current@freebsd.org
Subject:   Re: aperf/mperf
Message-ID:  <4CE68C0B.1080007@freebsd.org>
In-Reply-To: <4CE533DE.7010401@freebsd.org>
References:  <4CE29718.2050508@freebsd.org>	<D1DB20AD-779E-469B-BFFA-C0BA1A249858@neville-neil.com>	<4CE51CDA.6010202@freebsd.org> <AANLkTimcJFL8Y47mTznKz72w0z5%2BVoc9oWrz92kE%2BwQa@mail.gmail.com> <4CE533DE.7010401@freebsd.org>

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I am thinking about providing two APIs for this.

1. KPI
void cpu_get_a_m_perf(u_int cpu, uint64_t *aperf, uint64_t *mperf);

2. Userland
sysctl dev.cpu.N.aperf_mperf that returns two UQUAD values.

But I am not sure where to put the code for both APIs.
Adding another device under cpu seems like an overkill.

Ideas?
Thanks!
-- 
Andriy Gapon



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