On Wed, Sep 23, 2020 at 10:45:29AM +0800, Feng Tang wrote: > > Rather than a tool, would additional file(s) in, say, > > /sys/devices/system/cpu/cpu<n> be nicer? They could show the raw CPUID > > features, one file per leaf or sub-leaf, maybe even along with whether > > they were disabled at boot-time. > > My thought is we already have in-kernel powerful /proc/cpuinfo, while > a user space tool could be more flexible for text parsing/layout, and > show different info on user's demand/options.
The important thing here is that a separate tool would be decoupled from the kernel and thus will be independent from it, i.e., you can get the tool and run it without having to install a new kernel. And with the CPUID leafs specified in a text file, you won't even need to update the tool even - just cpuid.txt. It can't get any better than that. -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette