Michal Hocko <mhocko@xxxxxxxx> writes: > On Wed 01-11-23 10:21:47, Huang, Ying wrote: >> Michal Hocko <mhocko@xxxxxxxx> writes: > [...] >> > Well, I am not convinced about that TBH. Sure it is probably a good fit >> > for this specific CXL usecase but it just doesn't fit into many others I >> > can think of - e.g. proportional use of those tiers based on the >> > workload - you get what you pay for. >> >> For "pay", per my understanding, we need some cgroup based >> per-memory-tier (or per-node) usage limit. The following patchset is >> the first step for that. >> >> https://lore.kernel.org/linux-mm/cover.1655242024.git.tim.c.chen@xxxxxxxxxxxxxxx/ > > Why do we need a sysfs interface if there are plans for cgroup API? They are for different target. The cgroup API proposed here is to constrain the DRAM usage in a system with DRAM and CXL memory. The less you pay, the less DRAM and more CXL memory you use. -- Best Regards, Huang, Ying
