1LIBPFM(3)                  Linux Programmer's Manual                 LIBPFM(3)
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NAME

6       libpfm_intel_core - support for Intel Core-based processors
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SYNOPSIS

9       #include <perfmon/pfmlib.h>
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11       PMU name: core
12       PMU desc: Intel Core
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DESCRIPTION

16       The library supports all Intel Core-based processors that includes mod‐
17       els 15, 23, 29.
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MODIFIERS

21       The following modifiers are supported on Intel Core processors:
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23       u      Measure at user level which includes privilege levels 1,  2,  3.
24              This corresponds to PFM_PLM3.  This is a boolean modifier.
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26       k      Measure  at  kernel level which includes privilege level 0. This
27              corresponds to PFM_PLM0.  This is a boolean modifier.
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29       i      Invert the meaning of the event.  The  counter  will  now  count
30              cycles  in  which  the event is not occurring. This is a boolean
31              modifier
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33       e      Enable edge detection, i.e., count only when there  is  a  state
34              transition  from  no  occurrence  of  the  event to at least one
35              occurrence. This modifier must be combined with a  counter  mask
36              modifier  (m)  with  a value greater or equal to one.  This is a
37              boolean modifier.
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39       c      Set the counter mask value. The mask acts as  a  threshold.  The
40              counter  will  count the number of cycles in which the number of
41              occurrences of the event is greater or equal to  the  threshold.
42              This is an integer modifier with values in the range [0:255].
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AUTHORS

46       Stephane Eranian <eranian@gmail.com>
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50                                September, 2009                      LIBPFM(3)