[getHyperTwin] Is siblings of core coreId correct?

[leemgs]

It strange. We need to check the operation of the getHyperTwin function.
As we can see. we can read just one variable from the thread_sibling_list file.

• The existing source code:

  • https://github.com/PlatformLab/CoreArbiter/blob/master/src/CoreArbiterServer.cc#L975

• Analysis

  • on Intel i7 CPU: The function will be normal.

https://github.com/PlatformLab/CoreArbiter/blob/master/src/CoreArbiterServer.cc#L975

• on Intel i5 CPU: The function will not be normal.

invain@u1604:/sys/devices/system/cpu/cpu0/topology$ ls -al
합계 0
drwxr-xr-x 2 root root    0  4월 16 07:30 .
drwxr-xr-x 8 root root    0  4월 16 07:30 ..
-r--r--r-- 1 root root 4096  4월 16 07:30 core_id
-r--r--r-- 1 root root 4096  4월 16 08:30 core_siblings
-r--r--r-- 1 root root 4096  4월 16 10:32 core_siblings_list
-r--r--r-- 1 root root 4096  4월 16 07:30 physical_package_id
-r--r--r-- 1 root root 4096  4월 16 07:30 thread_siblings
-r--r--r-- 1 root root 4096  4월 16 07:30 thread_siblings_list
invain@u1604:/sys/devices/system/cpu/cpu0/topology$ cat ./thread_siblings
1
invain@u1604:/sys/devices/system/cpu/cpu0/topology$ cat ./thread_siblings_list 
0
invain@u1604:/sys/devices/system/cpu/cpu0/topology$