Re: [PATCH v3 0/8] mm/page_owner: Add PID/TGID/COMM and cgroup filtering

[David Hildenbrand (Arm)]

On 9/11/26 09:58, zhen.ni wrote:
> 
> 
> 在 2026/9/9 23:54, Zi Yan 写道:
>> On 9 Sep 2026, at 6:28, David Hildenbrand (Arm) wrote:
>>
>>>
>>> Because it results in less kernel code  :)
>>>
>>> And less kernel code is good. Unless unavoidable.
>>
>> An alternative is to add BPF hooks like bpf_iter to do the filtering
>> and by default, when no BPF program is attached, everything is printed.
>>
>>
> 
> I’ve also thought about a similar approach—perhaps a new bpf_iter type
> that could iterate over all pages by PFN. The advantage would be that
> you can fully customize what you want to print and what you want to
> filter. However, doing so would require refactoring the entire
> page_owner, and I’m not sure whether it’s worth pursuing in this
> direction.I’d also like to hear everyone’s thoughts on this.

Certainly better than having more and more manual filters added to the code base.

-- 
Cheers,

David