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/*
* (C) 2011 Dave Jones.
*
* Licensed under the terms of the GNU GPL License version 2.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "x86info.h"
static char * corenum(int num)
{
switch (num) {
case 1: return ("single");
case 2: return ("dual");
case 3: return ("tri");
case 4: return ("quad");
case 6: return ("six");
case 8: return ("eight");
default:
return ("?");
}
}
void get_topology(struct cpudata *cpu)
{
if (cpu->vendor == VENDOR_INTEL)
get_intel_topology(cpu);
}
void display_topology(struct cpudata *head)
{
struct cpudata *cpu;
unsigned int threads_per_socket;
unsigned int i;
char *sockets;
int num_sockets = 0;
/* For now, we only support topology parsing on Intel. */
if (head->vendor != VENDOR_INTEL)
return;
if (debug == 1) {
cpu = head;
printf("cpu->phys_proc_id: ");
for (i = 0; i < nrCPUs; i++) {
printf("%d, ", cpu->phys_proc_id);
cpu = cpu->next;
}
printf("\n");
cpu = head;
printf("cpu->x86_max_cores: ");
for (i = 0; i < nrCPUs; i++) {
printf("%d, ", cpu->x86_max_cores);
cpu = cpu->next;
}
printf("\n");
cpu = head;
printf("cpu->cpu_core_id: ");
for (i = 0; i < nrCPUs; i++) {
printf("%d, ", cpu->cpu_core_id);
cpu = cpu->next;
}
printf("\n");
}
sockets = malloc(nrCPUs);
if (sockets == NULL)
return;
for (i = 0; i < nrCPUs; i++)
sockets[i]=0;
cpu = head;
for (i = 0; i < nrCPUs; i++) {
sockets[cpu->phys_proc_id]++;
cpu = cpu->next;
}
for (i = 0; i < nrCPUs; i++) {
if (debug == 1)
printf("Socket %d: %d threads\n", i, sockets[i]);
if (sockets[i] != 0) /* only count populated sockets */
num_sockets++;
}
/* Print a topology summary */
cpu = head;
printf("Total processor threads: %d\n", sockets[0] * num_sockets);
printf("This system has %d ", num_sockets);
threads_per_socket = sockets[0];
if (cpu->flags_edx & X86_FEATURE_HT)
if (cpu->num_siblings > 1)
threads_per_socket = sockets[0]/2;
if (nrCPUs == 1) {
/* Handle the single CPU case */
printf("processor");
} else {
char *p;
p = corenum(threads_per_socket);
if (strncmp("?", p, 1))
printf("%s-core processor", corenum(threads_per_socket));
else
printf("%d-core processor", threads_per_socket);
if (num_sockets > 1)
printf("s");
}
if (cpu->flags_edx & X86_FEATURE_HT && cpu->num_siblings > 1)
printf(" with hyper-threading (%d threads per core)", cpu->num_siblings);
free(sockets);
}
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