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NetBSD: scale CPU frequencies

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Use a value type of 'long int' to avoid ENOMEM failures of sysctl(3).

Also check for "machdep.tsc_freq", scaled in MHz.
This commit is contained in:
Christian Göttsche 2021-08-30 19:26:50 +02:00 committed by BenBE
parent 3834f2a68f
commit 2844429f15
1 changed files with 16 additions and 12 deletions
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28
netbsd/NetBSDProcessList.c
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@ -39,14 +39,17 @@ static long fscale;
static int pageSize;
static int pageSizeKB;
static char const *freqSysctls[] = {
"machdep.est.frequency.current",
"machdep.powernow.frequency.current",
"machdep.intrepid.frequency.current",
"machdep.loongson.frequency.current",
"machdep.cpu.frequency.current",
"machdep.frequency.current",
NULL
static const struct {
const char* name;
long int scale;
} freqSysctls[] = {
{ "machdep.est.frequency.current", 1 },
{ "machdep.powernow.frequency.current", 1 },
{ "machdep.intrepid.frequency.current", 1 },
{ "machdep.loongson.frequency.current", 1 },
{ "machdep.cpu.frequency.current", 1 },
{ "machdep.frequency.current", 1 },
{ "machdep.tsc_freq", 1000000 },
};
static void NetBSDProcessList_updateCPUcount(ProcessList* super) {
@ -428,7 +431,7 @@ static void NetBSDProcessList_scanCPUFrequency(NetBSDProcessList* this) {
unsigned int cpus = this->super.existingCPUs;
bool match = false;
char name[64];
int freq = 0;
long int freq = 0;
size_t freqSize;
for (unsigned int i = 0; i < cpus; i++) {
@ -440,7 +443,7 @@ static void NetBSDProcessList_scanCPUFrequency(NetBSDProcessList* this) {
xSnprintf(name, sizeof(name), "machdep.cpufreq.cpu%u.current", i);
freqSize = sizeof(freq);
if (sysctlbyname(name, &freq, &freqSize, NULL, 0) != -1) {
this->cpuData[i + 1].frequency = freq;
this->cpuData[i + 1].frequency = freq; /* already in MHz */
match = true;
}
}
@ -453,9 +456,10 @@ static void NetBSDProcessList_scanCPUFrequency(NetBSDProcessList* this) {
* Iterate through legacy sysctl nodes for single-core frequency until
* we find a match...
*/
for (const char** s = freqSysctls; *s != NULL; ++s) {
for (size_t i = 0; i < ARRAYSIZE(freqSysctls); i++) {
freqSize = sizeof(freq);
if (sysctlbyname(*s, &freq, &freqSize, NULL, 0) != -1) {
if (sysctlbyname(freqSysctls[i].name, &freq, &freqSize, NULL, 0) != -1) {
freq /= freqSysctls[i].scale; /* scale to MHz */
match = true;
break;
}