I like to try out the new capability of perf c2c/mem for AMD arch (in detai: )
My environment is OS: Ubuntu 22.04.2 LTS x86_64 Kernel: 6.1.0-060100-generic CPU: AMD Ryzen 7 3700X (16) @ 3.600GHz
if I normally execute perf c2c record -a executable
I got a warning
WARNING: perf not found for kernel 6.1.0-060100 You may need to install the following packages for this specific kernel: linux-tools-6.1.0-060100-generic linux-cloud-tools-6.1.0-060100-generic You may also want to install one of the following packages to keep up to date: linux-tools-generic linux-cloud-tools-generic But I cannot install them
sudo apt-get install linux-tools-6.1.0-060100-generic Reading package lists... Done Building dependency tree... Done Reading state information... Done E: Unable to locate package linux-tools-6.1.0-060100-generic E: Couldn't find any package by glob 'linux-tools-6.1.0-060100-generic' E: Couldn't find any package by regex 'linux-tools-6.1.0-060100-generic' Anyone has idea?
1 Answer
Solution
sudo apt install linux-image-oem-22.04c linux-tools-oem-22.04c
Reboot into that v6.1 kernel.
Additional
If you'd like to list all the versions of perf available, type sudo apt install linux-tools- and press Tab twice to autocomplete, and bash-completion will list out the several hundred available packages.
This solution works right now for v6.1 because Ubuntu has a v6.1 OEM kernel (provided for later hardware compatibility for OEMs).
You're lucky there's another v6.1 kernel and tools in the repo for the OEM kernel and its related packages.
You're currently using Canonical kernel team's mainline package linux-image-6.1.0-060100-generic, but they do not do builds of the other stuff like linux-tools or the debuginfo.
So if you were using something else, like the very latest v6.2.11, there is no pre-made linux-tools for that kernel version. You'd have to compile perf from the kernel's tools/perf directory or whatever other source directory you got your kernel from.
