xref: /freebsd/lib/libpmc/pmc.soft.3 (revision b293497146fea63d76a1c7492c3a21e4e5bf8f48)

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.Dd September 23, 2021
.Dt PMC.SOFT 3
.Os
.Sh NAME
.Nm pmc.soft
.Nd measurements using software based events
.Sh LIBRARY
.Lb libpmc
.Sh SYNOPSIS
.In pmc.h
.Sh DESCRIPTION
Software events are used to collect various source of software events.
.Ss PMC Features
16 sampling counters using software events based on various sources.
These PMCs support the following capabilities:
.Bl -column "PMC_CAP_INTERRUPT" "Support"
.It Em Capability Ta Em Support
.It PMC_CAP_CASCADE Ta \&No
.It PMC_CAP_EDGE Ta \&No
.It PMC_CAP_INTERRUPT Ta Yes
.It PMC_CAP_INVERT Ta \&No
.It PMC_CAP_READ Ta Yes
.It PMC_CAP_PRECISE Ta \&No
.It PMC_CAP_SYSTEM Ta Yes
.It PMC_CAP_TAGGING Ta \&No
.It PMC_CAP_THRESHOLD Ta \&No
.It PMC_CAP_USER Ta Yes
.It PMC_CAP_WRITE Ta Yes
.El
.Ss Event Qualifiers
There is no supported event qualifier.
.Pp
The event specifiers supported by software are:
.Bl -tag -width indent
.It Li CLOCK.HARD
Hard clock ticks.
.It Li CLOCK.STAT
Stat clock ticks.
.It Li CLOCK.PROF
Profiling clock ticks.
.It Li INTR.ALL
Interrupt filter executed
.It Li INTR.FILTER
Interrupt filter returned FILTER_HANDLED.
.It Li INTR.ITHREAD
Interrupt filter returned FILTER_SCHEDULE_ITHREAD.
.It Li INTR.SCHEDULE
Ithread scheduled.
.It Li INTR.STRAY
Interrupt filter returned FILTER_STRAY.
.It Li INTR.WAITING
Ithread not scheduled, already active.
.It Li LOCK.FAILED
Lock acquisition failed.
.It Li PAGE_FAULT.ALL
All page fault type.
.It Li PAGE_FAULT.READ
Read page fault.
.It Li PAGE_FAULT.WRITE
Write page fault.
.El
.Sh SEE ALSO
.Xr pmc 3 ,
.Xr pmc.amd 3 ,
.Xr pmc.atom 3 ,
.Xr pmc.core 3 ,
.Xr pmc.corei7 3 ,
.Xr pmc.corei7uc 3 ,
.Xr pmc.iaf 3 ,
.Xr pmc.tsc 3 ,
.Xr pmc.ucf 3 ,
.Xr pmc.westmereuc 3 ,
.Xr pmc_cpuinfo 3 ,
.Xr pmclog 3 ,
.Xr hwpmc 4
.Sh HISTORY
The
.Nm pmc
library first appeared in
.Fx 6.0 .
.Sh AUTHORS
.An -nosplit
The
.Lb libpmc
library was written by
.An Joseph Koshy Aq Mt jkoshy@FreeBSD.org .
Software PMC was written by
.An Fabien Thomas Aq Mt fabient@FreeBSD.org .