[llvm] [llvm-exegesis] Add support for pinning benchmarking process to a CPU (PR #85168)

[Clement Courbet via llvm-commits]

legrosbuffle wrote:

> both the main `llvm-exegesis` process and the benchmarking process to the same core will require the scheduler to swap them in and out a couple times, which isn't what is desired.

Is this happening in practice, and does it make a significant difference on the output ?



https://github.com/llvm/llvm-project/pull/85168