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If the boot processor supports hyperthreading and contains more than one

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logical CPU, display the number of logical CPUs per physical processor
underneath the list of CPU features.
This commit is contained in:
John Baldwin 2003-01-08 01:23:16 +00:00
parent fa896b7280
commit 5460753d55
2 changed files with 18 additions and 0 deletions
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9
sys/amd64/amd64/identcpu.c
View File

@ -604,6 +604,15 @@ printcpuinfo(void)
"\037IA64" /* CPU can execute IA64 instructions */
"\040PBE" /* Pending Break Enable */
);
/*
* If this CPU supports hyperthreading then mention
* the number of logical CPU's it contains.
*/
if (cpu_feature & CPUID_HTT &&
(cpuid_cpuinfo & CPUID_HTT_CORES) > 0x100)
printf("\n Hyperthreading: %d logical CPUs",
(cpuid_cpuinfo & CPUID_HTT_CORES) >> 16);
}
if (strcmp(cpu_vendor, "AuthenticAMD") == 0 &&
nreg >= 0x80000001)

9
sys/i386/i386/identcpu.c
View File

@ -604,6 +604,15 @@ printcpuinfo(void)
"\037IA64" /* CPU can execute IA64 instructions */
"\040PBE" /* Pending Break Enable */
);
/*
* If this CPU supports hyperthreading then mention
* the number of logical CPU's it contains.
*/
if (cpu_feature & CPUID_HTT &&
(cpuid_cpuinfo & CPUID_HTT_CORES) > 0x100)
printf("\n Hyperthreading: %d logical CPUs",
(cpuid_cpuinfo & CPUID_HTT_CORES) >> 16);
}
if (strcmp(cpu_vendor, "AuthenticAMD") == 0 &&
nreg >= 0x80000001)