On 12/20/2017 10:19 AM, Matthew Wilcox wrote: > I don't know what the right interface is, but my laptop has a set of > /sys/devices/system/memory/memoryN/ directories. Perhaps this is the > right place to expose write_bw (etc). Those directories are already too redundant and wasteful. I think we'd really rather not add to them. In addition, it's technically possible to have a memory section span NUMA nodes and have different performance properties, which make it impossible to represent there. In any case, ACPI PXM's (Proximity Domains) are guaranteed to have uniform performance properties in the HMAT, and we just so happen to always create one NUMA node per PXM. So, NUMA nodes really are a good fit. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>
