op_cpu_type.c File Reference
CPU type determination. More...
#include <stdio.h>#include <stdlib.h>#include <string.h>#include <sys/utsname.h>#include <ctype.h>#include <errno.h>#include <fnmatch.h>#include "op_cpu_type.h"#include "op_hw_specific.h"
Classes | |
| struct | cpu_descr |
| struct | mips_cpu_descr |
Functions | |
| int | op_cpu_variations (op_cpu cpu_type) |
| the CPU lowest common denominator | |
| op_cpu | op_cpu_base_type (op_cpu cpu_type) |
| get the CPU lowest common denominator | |
| op_cpu | op_get_cpu_type (void) |
| get the CPU type from the kernel | |
| op_cpu | op_get_cpu_number (char const *cpu_string) |
| get the cpu number based on string | |
| char const * | op_get_cpu_type_str (op_cpu cpu_type) |
| get the cpu string. | |
| char const * | op_get_cpu_name (op_cpu cpu_type) |
| op_get_cpu_name - get the cpu name | |
| int | op_get_nr_counters (op_cpu cpu_type) |
| compute the number of counters available | |
| int | op_cpu_has_timer_fs (void) |
| determine if the /dev/oprofile/timer is available | |
Detailed Description
CPU type determination.
- Remarks:
- Copyright 2002 OProfile authors
- Read the file COPYING
Function Documentation
get the CPU lowest common denominator
returns cpu_type if cpu_type does not have a lowest common denominator.
References CPU_ARCH_PERFMON, CPU_ATOM, CPU_CORE_2, CPU_CORE_I7, CPU_IVYBRIDGE, CPU_NEHALEM, CPU_SANDYBRIDGE, and CPU_WESTMERE.
| int op_cpu_has_timer_fs | ( | void | ) |
determine if the /dev/oprofile/timer is available
return true if the kernel modules provides the /dev/oprofile interface for timer mode sampling.
Referenced by find_counter_event(), and op_get_nr_counters().
| int op_cpu_variations | ( | op_cpu | cpu_type | ) |
the CPU lowest common denominator
returns 1 if there are variations for the base cpu type;
References CPU_ARCH_PERFMON.
Referenced by op_get_cpu_type().
| char const* op_get_cpu_name | ( | op_cpu | cpu_type | ) |
op_get_cpu_name - get the cpu name
- Parameters:
-
cpu_type the cpu identifier name
The function always return a valid char const * Return the OProfile CPU name, e.g. "i386/pii"
References MAX_CPU_TYPE, and cpu_descr::name.
Referenced by describe_cpu(), and find_mapping_for_event().
| op_cpu op_get_cpu_number | ( | char const * | cpu_string | ) |
get the cpu number based on string
- Parameters:
-
cpu_string with either the cpu type identifier or cpu type number
The function returns CPU_NO_GOOD if no matching string was found.
References cpu_descr::cpu, CPU_NO_GOOD, cpu_type, and MAX_CPU_TYPE.
Referenced by main(), and op_get_cpu_type().
| op_cpu op_get_cpu_type | ( | void | ) |
get the CPU type from the kernel
returns CPU_NO_GOOD if the CPU could not be identified. This function can not work if the module is not loaded
References CPU_NO_GOOD, cpu_type, op_cpu_variations(), and op_get_cpu_number().
Referenced by main(), map_event_to_counter(), and oprof_start::oprof_start().
| char const* op_get_cpu_type_str | ( | op_cpu | cpu_type | ) |
get the cpu string.
- Parameters:
-
cpu_type the cpu type identifier
The function always return a valid char const * the core cpu denomination or "invalid cpu type" if cpu_type is not valid.
References MAX_CPU_TYPE, and cpu_descr::pretty.
Referenced by describe_cpu(), and main().
| int op_get_nr_counters | ( | op_cpu | cpu_type | ) |
compute the number of counters available
- Parameters:
-
cpu_type numeric processor type
returns 0 if the CPU could not be identified
References MAX_CPU_TYPE, cpu_descr::nr_counters, and op_cpu_has_timer_fs().
Referenced by map_event_to_counter(), op_default_event(), and oprof_start::oprof_start().
