fill modelName for all cores in arm64 devices

[sgthammer]

If there are more than one core for arm64 based devices, model name of CPU was not filled for all the cores except the last core. For instance, if there are 4 cores, only the last core's model name info is filled. As there is no model name line in /proc/cpuinfo file for arm64 devices(refer to: arch/arm64/kernel/cpuinfo.c in linux kernel code), it is better to move the code under case "model", "CPU part". Also, all the core's model names will filled as this case is inside of loop.

The code is tested for both amd64 and arm64 devices:

• Arm Cortex-A53
• 11th Gen Intel(R) Core(TM) i7-11850H @ 2.50GHz

[sgthammer]

@shirou, could you please review this change or forward it to someone who can review?

[shirou]

Hmm. The model name has been discussed once here. I found at least one device does not have a model line in cpuinfo. Could you share your cpuinfo by using gist?

[sgthammer]

Cpuinfo link: https://gist.github.com/sgthammer/6b1b841f313897909bd33d5ce3bf1e49

For arm device we need to focus on "CPU Part" keyword. Kernel provides this line for all arm64 devices. Please refer to cpuinfo.c file as I provided in upper description.

[shirou]

I have confirmed CPU part is always provided by cpuinfo.c as you said, I can reproduce with 4 CPU machine on GCP (Thank you sponsors!), and also confirmed all cpus have ModelName with your PR without errors. Thank you so much!