Re: [PATCH v3] mm/lruvec: trace LRU add drains and drain-all requests

[David Hildenbrand (Arm)]

On 6/17/26 20:18, Vlastimil Babka (SUSE) wrote:
> On 6/17/26 17:03, Shakeel Butt wrote:
>> On Wed, Jun 17, 2026 at 01:11:16PM +0200, David Hildenbrand (Arm) wrote:
>>>
>>> Given that trace events can quickly become stable ABI [1], are we really sure we
>>> want to add this?
>>
>> Yes, I think so as this is useful to get insights into lru cache draining.
>> Trace events being stable or not is secondary IMHO. If in future we rearchitect
>> the lru page handling where there is no cache draining anymore, we can make
>> these a noops.
> 
> Yeah and I don't recall ever that a change to a mm tracepoint would ever
> break someone who'd complain and we'd have to revert it.
Really? :)

Read the context of the link I posted once more.

-- 
Cheers,

David