On Wed, Nov 29, 2023 at 02:45:03PM -0500, Pasha Tatashin wrote: > > same kind of big systems where IOMMU pagetables would be of any concern. > > I believe some of the some of the "serious" NICs can easily run up > > hundreds of megabytes if not gigabytes worth of queues, SKB pools, etc. > > - would you propose accounting those too? > > Yes. Any kind of kernel memory that is proportional to the workload > should be accountable. Someone is using those resources compared to > the idling system, and that someone should be charged. There is a difference between charged and accounted You should be running around adding GFP_KERNEL_ACCOUNT, yes. I already did a bunch of that work. Split that out from this series and send it to the right maintainers. Adding a counter for allocations and showing in procfs is a very different question. IMHO that should not be done in micro, the threshold to add a new counter should be high. There is definately room for a generic debugging feature to break down GFP_KERNEL_ACCOUNT by owernship somehow. Maybe it can already be done with BPF. IDK Jason
