On 05/08/2020, 15:57, "Robin Murphy" <robin.murphy@xxxxxxx> wrote:
> At long last, here's an initial cut of the CMN PMU driver that's been
> festering in on-and-off development for years. It should be functionally
> complete now, although there is still scope for improving the current
> implementation (e.g. watchpoint register allocation could be cleverer).
Booted on graviton2 (using ACPI). Cache-fill counter value (both general and
bynodeid) responds as expected to memory pressure from user processes.
Tested-by: Tsahi Zidenberg <tsahee@xxxxxxxxxx>
> Of particular interest at this point is the user interface - is it
> sufficiently complete and useful? Is there any need for a third event
> targeting method in between "single node ID" and "all nodes"?
The one thing I'm missing (or didn't find) is a way for the user to determine
the list of relevant node ids for each node type or counter.
Using a wrong nodeid just gave me <not supported> as a counter value.
I don't think that it's required for a first version, though.
---
Thank you!
Tsahi
