9/3/2023 0 Comments Linux cpuinfo serial meansFor example, for the arm64 architecture, this variable is defined in arm64/kernel/setup. One file for each of the above architectures defines a cpuinfo_op variable of type seq_operations. The links in the rest of this post are cross referenced links, so you may not need to download the sources. The arch/ sub directory has architecture specific code and in all you will see 31 subdirectories in this sub directory: alpha, arc, arm, arm64, and others. The post is admittedly half baked and may not satisfy all your queries, but I think I am on the right track.ĭownload the Linux kernel sources (tarball from or clone it from ). However, I will share with you how to find out the information you may find in this file on different architectures. I won’t attempt to make any guesses to why they are different. Hence, it is necessary that whatever tool/script one writes to read and use the data from this file and hopes it to work across architectures should consider these differences. If you compare the contents of your Intel/AMD desktop or laptop with the above, you will know what I am talking about. (64-bit instruction set, hardware-assisted virtualization, cryptographic accelerators, etc. However, one problem with dealing with this file is that depending on the hardware architecture, the information varies – both in their presentation format and the information available. If you need to receive a computer ID: dmidecode grep -w UUID sed 's/.UUID\: //g'. This will get CPU ID, remove 'ID: ' from output. These are useful information and for projects such as lshw and Beaker, quite vital too. If you need CPU ID: dmidecode grep -w ID sed 's/.ID\: //g'. Being plain text files, you can write shell scripts or some other programming language (see my earlier article using CPython on this topic) to parse this information and mine the data you are looking for. For example, here is what it looks like on my $ cat /proc/cpuinfoįeatures : swp half thumb fastmult vfp edsp neon vfpv3 tlsĭepending on what you are looking for, these are all useful information. However, you may also be able to do some rudimentary tests to determine the architecture without importing a special library.The /proc/cpuinfo file contains runtime information about the processors on your Linux computer (including your Android phone). There are usually libraries for obtaining that information if you're using a compiled programming language and you need to determine what architecture you're on. Board revision number and serial number are concepts that don't appear to exist in the arm64 architecture, but we will continue to make that. On Linux, any command you type into an interactive terminal session can be scripted so that it's non-interactive, but sometimes you're working with more than just a simple script. When we do support arm64 it will be with the absolute minimum number of changes to the upstream kernel (ideally none), and the content of /proc/cpuinfo would not be high on the list of priorities. Sometimes you need CPU information within a non-interactive interface. A practical introduction to container terminology.Skip to bottom of list Skip to the bottom of list You can also get the model of your CPU with the -processor ( -p for short) option: $ uname -processorĪnd finally, the architecture with -machine ( -m): $ uname -machine For example, you can get the vendor of your CPU with the -hardware-platform ( -i for short) option: $ uname -hardware-platform Because your kernel is highly dependent on your CPU, you can extract a lot of CPU data from its output. The uname command is usually used to print information about your kernel. If all you need to know is the architecture of your CPU, you can use the arch command: $ arch Model name : AMD Ryzen 5 5600X 6-Core Processor It's this file that applications like KInfocenter parse to deliver data about your CPU, but you can parse it yourself, too. This data is stored in the /proc virtual filesystem in a file named cpuinfo. As the binary responsible for bootstrapping your system, Linux has information about everything it's managing, including the CPU. While we often use the term "Linux" (or sometimes GNU+Linux) to refer to the operating system, it's a kernel first and foremost.
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