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

NAME         top

       libpfm_intel_coreduo - support for Intel Core Duo/Solo processors

SYNOPSIS         top

       #include <perfmon/pfmlib.h>

       PMU name: coreduo
       PMU desc: Intel Core Duo

DESCRIPTION         top

       The library supports all Intel Yonah-based processors such as Intel
       Core Duo and Intel Core Solo processors.

MODIFIERS         top

       The following modifiers are supported on Intel Core Duo processors:

       u      Measure at user level which includes privilege levels 1, 2, 3.
              This corresponds to PFM_PLM3.  This is a boolean modifier.

       k      Measure at kernel level which includes privilege level 0. This
              corresponds to PFM_PLM0.  This is a boolean modifier.

       i      Invert the meaning of the event. The counter will now count
              cycles in which the event is not occurring. This is a boolean

       e      Enable edge detection, i.e., count only when there is a state
              transition. This is a boolean modifier.

       c      Set 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].


       It is possible to force activation of the Intel Core Duo support
       using the LIBPFM_FORCE_PMU variable.  The PMU name, coreduo, must be
       passed. No additional options are supported.

AUTHORS         top

       Stephane Eranian <>

COLOPHON         top

       This page is part of the perfmon2 (a performance monitoring library)
       project.  Information about the project can be found at 
       ⟨⟩.  If you have a bug report for this
       manual page, send it to  This
       page was obtained from the project's upstream Git repository 
       ⟨git://⟩ on 2017-03-13.  If you dis‐
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       COLOPHON (which is not part of the original manual page), send a mail

                               September, 2009                     LIBPFM(3)