Re: [PATCH v7 18/43] instrumented.h: add KMSAN support

Marco Elver
2022-10-21T06:17:32Z

On Thu, 20 Oct 2022 at 22:55, youling 257 <youling257@gmail.com> wrote:
>
> How to use perf tool?

The simplest would be to try just "perf top" - and see which kernel
functions consume most CPU cycles. I would suggest you compare both
kernels, and see if you can spot a function which uses more cycles% in
the problematic kernel.