Messages in this thread | | | Date | Mon, 25 Jan 2021 19:53:35 -0500 | From | Tejun Heo <> | Subject | Re: [PATCH] x86/mm: Tracking linear mapping split events since boot |
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Hello, Dave.
On Mon, Jan 25, 2021 at 04:47:42PM -0800, Dave Hansen wrote: > The patch here does not actually separate out pre-boot from post-boot, > so it's pretty hard to tell if the splits came from something like > tracing which is totally unnecessary or they were the result of > something at boot that we can't do anything about.
Ah, right, didn't know they also included splits during boot. It'd be a lot more useful if they were counting post-boot splits.
> This would be a lot more useful if you could reset the counters. Then > just reset them from userspace at boot. Adding read-write debugfs > exports for these should be pretty trivial.
While this would work for hands-on cases, I'm a bit worried that this might be more challenging to gain confidence in large production environments.
Thanks.
-- tejun
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