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libpfm_intel_core(3) — Linux manual page

LIBPFM(3)               Linux Programmer's ManualLIBPFM(3)

NAME        top

       libpfm_intel_core - support for Intel Core-based processors

SYNOPSIS        top

#include <perfmon/pfmlib.h>PMU name: corePMU desc: Intel Core

DESCRIPTION        top

       The library supports all Intel Core-based processors that includes       models 15, 23, 29.

MODIFIERS        top

       The following modifiers are supported on Intel Core processors:uMeasure at user level which includes privilege levels 1, 2,              3. This corresponds toPFM_PLM3.  This is a boolean              modifier.kMeasure at kernel level which includes privilege level 0.              This corresponds toPFM_PLM0.  This is a boolean modifier.iInvert the meaning of the event. The counter will now count              cycles in which the event isnotoccurring. This is a              boolean modifiereEnable edge detection, i.e., count only when there is a              state transition from no occurrence of the event to at              least one occurrence. This modifier must be combined with a              counter mask modifier (m) with a value greater or equal to              one.  This is a boolean modifier.cSet the counter mask value. The mask acts as a threshold.              The counter will count the number of cycles in which the              number of occurrences of the event is greater or equal to              the threshold. This is an integer modifier with values in              the range [0:255].

AUTHORS        top

       Stephane Eranian <eranian@gmail.com>

COLOPHON        top

       This page is part of theperfmon2 (a performance monitoring       library) project.  Information about the project can be found at       ⟨http://perfmon2.sourceforge.net/⟩.  If you have a bug report for       this manual page, send it to perfmon2-devel@lists.sourceforge.net.       This page was obtained from the project's upstream Git repository       ⟨git://git.code.sf.net/p/perfmon2/libpfm4 perfmon2-libpfm4⟩ on       2025-08-11.  (At that time, the date of the most recent commit       that was found in the repository was 2025-06-29.)  If you discover       any rendering problems in this HTML version of the page, or you       believe there is a better or more up-to-date source for the page,       or you have corrections or improvements to the information in this       COLOPHON (which isnot part of the original manual page), send a       mail to man-pages@man7.org                             September, 2009LIBPFM(3)

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