LIBPFM(3) Linux Programmer's Manual LIBPFM(3)NAME
pfm_terminate - free resources used by library
SYNOPSIS
#include <perfmon/pfmlib.h>
int pfm_terminate(void);
DESCRIPTION
This is the last function that a program must call to free all the resources allocated by the library, e.g., memory. The function is not
reentrant, caller must ensure only one thread at a time is executing it.
RETURN
There is no return value to this function
AUTHOR
Stephane Eranian <eranian@gmail.com>
September, 2009 LIBPFM(3)
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LIBPFM(3) Linux Programmer's Manual LIBPFM(3)NAME
libpfm_intel_coreduo - support for Intel Core Duo/Solo processors
SYNOPSIS
#include <perfmon/pfmlib.h>
PMU name: coreduo
PMU desc: Intel Core Duo
DESCRIPTION
The library supports all Intel Yonah-based processors such as Intel Core Duo and Intel Core Solo processors.
MODIFIERS
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 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 occur-
rences of the event is greater or equal to the threshold. This is an integer modifier with values in the range [0:255].
ENVIRONMENT VARIABLES
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
Stephane Eranian <eranian@gmail.com>
September, 2009 LIBPFM(3)
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