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#include "cpu.h"
#include "common/processing.h"
#include "common/strutil.h"
#include <kstat.h>
static const char* detectCPUTempByKstat(const FFCPUOptions* options, kstat_ctl_t* kc, FFCPUResult* cpu) {
const char* possibleModules[] = { "temperature", "cpu_temp", "acpi_thermal", NULL };
if (options->tempSensor.length > 0) {
possibleModules[0] = options->tempSensor.chars;
possibleModules[1] = NULL;
}
for (int i = 0; possibleModules[i] != NULL; i++) {
kstat_t* ks = kstat_lookup(kc, possibleModules[i], -1, NULL);
if (ks && kstat_read(kc, ks, NULL) >= 0) {
kstat_named_t* kn = kstat_data_lookup(ks, "temperature");
if (kn) {
switch (kn->data_type) {
case KSTAT_DATA_INT32:
cpu->temperature = (float) kn->value.i32;
return NULL;
case KSTAT_DATA_UINT32:
cpu->temperature = (float) kn->value.ui32;
return NULL;
case KSTAT_DATA_FLOAT:
cpu->temperature = kn->value.f;
return NULL;
}
}
}
}
return "Failed to find CPU temperature using kstat";
}
static const char* detectCPUTempByIpmiTool(FFCPUResult* cpu) {
FF_STRBUF_AUTO_DESTROY buffer = ffStrbufCreate();
const char* error = ffProcessAppendStdOut(&buffer, (char* const[]) { "ipmitool", "-c", "sdr", "list", NULL });
if (error) {
return error;
}
char* line = NULL;
size_t len = 0;
while (ffStrbufGetline(&line, &len, &buffer)) {
if (sscanf(line, "CPU%*d Temp,%lf,degrees C,ok", &cpu->temperature) == 1) {
return NULL;
}
}
return "ipmitool sdr list failed to find CPU temperature";
}
static inline void kstatFreeWrap(kstat_ctl_t** pkc) {
assert(pkc);
if (*pkc) {
kstat_close(*pkc);
}
}
static inline uint16_t countTypeId(kstat_ctl_t* kc, const char* type) {
uint64_t low = 0, high = 0;
for (kstat_t* ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
if (ffStrStartsWith(ksp->ks_module, "cpu_info")) {
if (kstat_read(kc, ksp, NULL) < 0) {
continue;
}
kstat_named_t* stat = kstat_data_lookup(ksp, type);
if (!stat) {
continue;
}
uint32_t id = 0;
switch (stat->data_type) {
#ifdef _INT64_TYPE
case KSTAT_DATA_INT64:
case KSTAT_DATA_UINT64:
id = (uint32_t) stat->value.ui64;
break;
#endif
case KSTAT_DATA_INT32:
case KSTAT_DATA_UINT32:
id = stat->value.ui32;
break;
default:
continue;
}
if (__builtin_expect(id > 64, false)) {
high |= 1ULL << (id - 64);
} else {
low |= 1ULL << id;
}
}
}
return (uint16_t) (__builtin_popcountll(low) + __builtin_popcountll(high));
}
const char* ffDetectCPUImpl(const FFCPUOptions* options, FFCPUResult* cpu) {
FF_A_CLEANUP(kstatFreeWrap) kstat_ctl_t* kc = kstat_open();
if (!kc) {
return "kstat_open() failed";
}
kstat_t* ks = kstat_lookup(kc, "cpu_info", -1, NULL);
if (!ks) {
return "kstat_lookup() failed";
}
if (kstat_read(kc, ks, NULL) < 0) {
return "kstat_read() failed";
}
{
kstat_named_t* kn = kstat_data_lookup(ks, "brand");
if (kn) {
ffStrbufSetNS(&cpu->name, KSTAT_NAMED_STR_BUFLEN(kn) - 1, KSTAT_NAMED_STR_PTR(kn));
}
}
{
kstat_named_t* kn = kstat_data_lookup(ks, "vendor_id");
if (kn) {
ffStrbufSetNS(&cpu->vendor, KSTAT_NAMED_STR_BUFLEN(kn) - 1, KSTAT_NAMED_STR_PTR(kn));
}
}
ffCPUDetectByCpuid(cpu);
{
kstat_named_t* kn = kstat_data_lookup(ks, "clock_MHz");
if (kn && kn->value.ui32 > cpu->frequencyBase) {
cpu->frequencyBase = kn->value.ui32;
}
}
ks = kstat_lookup(kc, "unix", -1, "system_misc");
if (ks && kstat_read(kc, ks, NULL) >= 0) {
kstat_named_t* kn = kstat_data_lookup(ks, "ncpus");
if (kn) {
cpu->coresLogical = cpu->coresOnline = (uint16_t) kn->value.ui32;
}
}
cpu->packages = countTypeId(kc, "chip_id");
cpu->coresPhysical = countTypeId(kc, "core_id");
if (options->temp) {
if (detectCPUTempByKstat(options, kc, cpu) != NULL) {
detectCPUTempByIpmiTool(cpu);
}
}
return NULL;
}
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