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

NAME

       libpfm_intel_core - support for Intel Core-based processors

SYNOPSIS

       #include <perfmon/pfmlib.h>

       PMU name: core
       PMU desc: Intel Core

DESCRIPTION

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

MODIFIERS

       The following modifiers are supported on Intel Core 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 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.

       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  occur-
	      rences of the event is greater or equal to the threshold. This is an integer modifier with values in the range [0:255].

AUTHORS

       Stephane Eranian <eranian@gmail.com>

								  September, 2009							 LIBPFM(3)