m0_processor_descr Struct Reference

#include <processor.h>

Collaboration diagram for m0_processor_descr:

Data Fields
m0_processor_nr_t	pd_id
uint32_t	pd_numa_node
uint32_t	pd_l1
uint32_t	pd_l2
size_t	pd_l1_sz
size_t	pd_l2_sz
uint32_t	pd_pipeline

Detailed Description

Description of a processor in the system. Please note that L1 and L2 cache ids may have to bee generated by the program.

Example : Id generation on Linux (user-mode)

+---------------+-----------------------------------------------------------+
| Name          |    Identifier Description                                 |
+---------------+-----------------------------------------------------------+
| pd_numa_node  | NumaNode Id as supplied by the system                     |
+---------------+-----------------------------------------------------------+
| pd_id         | Logical processor id supplied by the system               |
+---------------+-----------------------------------------------------------+
| pd_l1         | 1. If L1 is not shared with any other processor, then     |
|               |    it's same as pd_id.                                    |
|               | 2. If L1 is shared,                                       |
|               |    Physical Package Id (16-31) |  Core Id (0-15)          |
+---------------+-----------------------------------------------------------+
| pd_l2         | 1. If L2 is not shared with any other processor, then     |
|               |    it's same as pd_id.                                    |
|               | 3. If L2 is shared and L3 is present, its                 |
|               |    Physical Package Id (16-31) | Core Id (0-15)           |
|               | 3. If L2 is shared and L3 is not present, its             |
|               |    Physical Package Id                                    |
+---------------+-----------------------------------------------------------+
| pd_pipeline   | Same as pd_id                                             |
+---------------+-----------------------------------------------------------+

Definition at line 169 of file processor.h.

Field Documentation

pd_id

m0_processor_nr_t pd_id

Processor identifier.

Definition at line 171 of file processor.h.

pd_l1

uint32_t pd_l1

Id for L1 cache. If multiple processors share L1 cache, all of them will have same L1 cache id

Definition at line 176 of file processor.h.

pd_l1_sz

size_t pd_l1_sz

L1 cache size (in bytes) for this processor

Definition at line 181 of file processor.h.

pd_l2

uint32_t pd_l2

Id for L2 cache. If multiple processors share L2 cache, all of them will have same L2 cache id

Definition at line 179 of file processor.h.

pd_l2_sz

size_t pd_l2_sz

L2 cache size (in bytes) for this processor

Definition at line 183 of file processor.h.

pd_numa_node

uint32_t pd_numa_node

All processors in the same numa node share this

Definition at line 173 of file processor.h.

pd_pipeline

uint32_t pd_pipeline

All processors sharing the same pipeline have the same value of this.

Definition at line 186 of file processor.h.

---

The documentation for this struct was generated from the following file:

• lib/processor.h