NAME

       libpfm_intel_atom - support for Intel Atom processors

SYNOPSIS

       #include <perfmon/pfmlib.h>

       PMU name: atom
       PMU desc: Intel Atom

DESCRIPTION

       The library supports all Intel Atom-based processors that includes family 6 model 28.

MODIFIERS

       The following modifiers are supported on Intel Atom 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 modifier

       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].

       t      Measure on both threads at the same time assuming hyper-threading is enabled.  This
              is a boolean modifier.

AUTHORS

       Stephane Eranian <eranian@gmail.com>

                                         September, 2009                                LIBPFM(3)