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Replace deprecated thread_siblings_list by core_cpus_list

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This commit is contained in:
Holger Obermaier 2023-09-08 11:34:07 +02:00
parent f3ffa29a37
commit 1b06270e9b
1 changed files with 22 additions and 20 deletions
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42
pkg/ccTopology/ccTopology.go
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@ -16,14 +16,16 @@ import (
const SYSFS_CPUBASE = `/sys/devices/system/cpu`
// Structure holding all information about a hardware thread
// See https://www.kernel.org/doc/Documentation/ABI/stable/sysfs-devices-system-cpu
type HwthreadEntry struct {
CpuID int // CPU hardware threads
SMT int // Simultaneous Multithreading ID
ThreadSiblingsList []int // Simultaneous Multithreading siblings
Core int // CPU core ID
Socket int // CPU sockets (physical) ID
Die int // CPU Die ID
NumaDomain int // NUMA Domain
// for each CPUx:
CpuID int // CPU / hardware thread ID
SMT int // Simultaneous Multithreading ID
CoreCPUsList []int // CPUs within the same core
Core int // Socket local core ID
Socket int // Sockets (physical) ID
Die int // Die ID
NumaDomain int // NUMA Domain
}
var cache struct {
@ -60,7 +62,7 @@ func fileToInt(path string) int {
// A range can be a single value or a range of values given by a startValue-endValue
// In case of an error nil is returned
func fileToList(path string) []int {
// Read thread sibling list
// Read list
buffer, err := os.ReadFile(path)
if err != nil {
log.Print(err)
@ -200,25 +202,25 @@ func init() {
cache.DieList[i] = cache.SocketList[i]
}
// Lookup thread siblings list
threadSiblingList := fileToList(filepath.Join(topoBase, "thread_siblings_list"))
// Lookup List of CPUs within the same core
coreCPUsList := fileToList(filepath.Join(topoBase, "core_cpus_list"))
// Find index of CPU ID in thread sibling list
// Find index of CPU ID in List of CPUs within the same core
// if not found return -1
cache.SMTList[i] = slices.Index(threadSiblingList, c)
cache.SMTList[i] = slices.Index(coreCPUsList, c)
// Lookup NUMA domain id
cache.NumaDomainList[i] = getNumaDomain(cpuBase)
cache.CpuData[i] =
HwthreadEntry{
CpuID: cache.HwthreadList[i],
SMT: cache.SMTList[i],
ThreadSiblingsList: threadSiblingList,
Socket: cache.SocketList[i],
NumaDomain: cache.NumaDomainList[i],
Die: cache.DieList[i],
Core: cache.CoreList[i],
CpuID: cache.HwthreadList[i],
SMT: cache.SMTList[i],
CoreCPUsList: coreCPUsList,
Socket: cache.SocketList[i],
NumaDomain: cache.NumaDomainList[i],
Die: cache.DieList[i],
Core: cache.CoreList[i],
}
}
@ -305,7 +307,7 @@ func CpuData() []HwthreadEntry {
// return a deep copy to protect cache data
c := slices.Clone(cache.CpuData)
for i := range c {
c[i].ThreadSiblingsList = slices.Clone(cache.CpuData[i].ThreadSiblingsList)
c[i].CoreCPUsList = slices.Clone(cache.CpuData[i].CoreCPUsList)
}
return c
}