114 lines
3.5 KiB
Groff
114 lines
3.5 KiB
Groff
.\" Copyright (c) 2010 Fabien Thomas. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd March 30, 2010
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.Dt PMC.UCF 3
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.Os
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.Sh NAME
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.Nm pmc.ucf
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.Nd measurement events for
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.Tn Intel
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uncore fixed function performance counters.
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.Sh LIBRARY
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.Lb libpmc
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.Sh SYNOPSIS
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.In pmc.h
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.Sh DESCRIPTION
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Each fixed-function PMC measures a specific hardware event.
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The number of fixed-function PMCs implemented in a CPU can vary.
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The number of fixed-function PMCs present can be determined at runtime
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by using function
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.Xr pmc_cpuinfo 3 .
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.Pp
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Intel uncore fixed-function PMCs are documented in
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.Rs
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.%B "Intel(R) 64 and IA-32 Architectures Software Developes Manual"
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.%T "Volume 3B: System Programming Guide, Part 2"
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.%N "Order Number: 253669-033US"
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.%D December 2009
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.%Q "Intel Corporation"
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.Re
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.Pp
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.Ss PMC Capabilities
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Fixed-function PMCs support the following capabilities:
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.Bl -column "PMC_CAP_INTERRUPT" "Support"
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.It Em Capability Ta Em Support
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.It PMC_CAP_CASCADE Ta \&No
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.It PMC_CAP_EDGE Ta \&No
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.It PMC_CAP_INTERRUPT Ta \&No
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.It PMC_CAP_INVERT Ta \&No
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.It PMC_CAP_READ Ta Yes
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.It PMC_CAP_PRECISE Ta \&No
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.It PMC_CAP_SYSTEM Ta \&No
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.It PMC_CAP_TAGGING Ta \&No
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.It PMC_CAP_THRESHOLD Ta \&No
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.It PMC_CAP_USER Ta \&No
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.It PMC_CAP_WRITE Ta Yes
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.El
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.Ss Class Name Prefix
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These PMCs are named using a class name prefix of
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.Dq Li ucf- .
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.Ss Event Specifiers (Fixed Function PMCs)
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The fixed function PMCs are selectable using the following
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event names:
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.Bl -tag -width indent
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.It Li UCLOCK
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.Pq Fixed Function Counter 0
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The fixed-function uncore counter increments at the rate of the U-clock.
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The frequency of the uncore clock domain can be determined from the uncore
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clock ratio which is available in the PCI configuration space register at
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offset C0H under device number 0 and Function 0.
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.El
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.Sh SEE ALSO
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.Xr pmc 3 ,
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.Xr pmc.atom 3 ,
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.Xr pmc.core 3 ,
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.Xr pmc.core2 3 ,
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.Xr pmc.iaf 3 ,
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.Xr pmc.k7 3 ,
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.Xr pmc.k8 3 ,
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.Xr pmc.p4 3 ,
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.Xr pmc.p5 3 ,
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.Xr pmc.p6 3 ,
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.Xr pmc.corei7 3 ,
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.Xr pmc.corei7uc 3 ,
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.Xr pmc.westmere 3 ,
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.Xr pmc.westmereuc 3 ,
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.Xr pmc.soft 3 ,
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.Xr pmc.tsc 3 ,
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.Xr pmc_cpuinfo 3 ,
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.Xr pmclog 3 ,
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.Xr hwpmc 4
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.Sh HISTORY
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The
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.Nm pmc
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library first appeared in
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.Fx 6.0 .
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.Sh AUTHORS
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The
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.Lb libpmc
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library was written by
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.An Joseph Koshy Aq Mt jkoshy@FreeBSD.org .
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