Re: [PATCH] x86/split_lock: add split lock counter

[Dave Hansen]

On 12/15/23 06:01, Maksim Davydov wrote:
> Provides per task split locks counter to monitor split locks rate
> in the system. It can be helpful in split locks monitoring to get a clear
> sense of which process causing split locks and how many of them have
> happened by the moment. For instance, it might be used by cloud providers
> who can't control guest executable code and want to make decisions based
> on the rate value like ratelimiting or notifing the split lock origins.

Have you considered doing this with tracing instead?

It seems a _little_ silly for everyone to pay the cost of having that
counter around.