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

6       libpfm_intel_knc - support for Intel Knights Corner
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SYNOPSIS

9       #include <perfmon/pfmlib.h>
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11       PMU name: knc
12       PMU desc: Intel Knights Corner
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DESCRIPTION

16       The library supports Intel Knights Corner processors.
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MODIFIERS

20       The  following  modifiers are supported on Intel Knights Corner proces‐
21       sors:
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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. This is a boolean modifier.
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36       c      Set  the  counter  mask value. The mask acts as a threshold. The
37              counter will count the number of cycles in which the  number  of
38              occurrences  of  the event is greater or equal to the threshold.
39              This is an integer modifier with values in the range [0:255].
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41       t      Measure on all threads at the same time assuming hyper-threading
42              is enabled. This is a boolean modifier.
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AUTHORS

45       Stephane Eranian <eranian@gmail.com>
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49                                September, 2012                      LIBPFM(3)