On Wed, Sep 20, 2023 at 02:18:48PM +0800, Huang Ying wrote: > Per-CPU data cache size is useful information. For example, it can be > used to determine per-CPU cache size. So, in this patch, the data > cache size for each CPU is calculated via data_cache_size / > shared_cpu_weight. > > A brute-force algorithm to iterate all online CPUs is used to avoid > to allocate an extra cpumask, especially in offline callback. > You have not mentioned who will use this information ? Looking at the change, it is not exposed to the user-space. Also I see this is actually part of the series [1]. Is this info used in any of those patches ? Can you point me to the same ? Not all architecture use cacheinfo yet. How will the mm changes affect those platforms ? -- Regards, Sudeep [1] https://lore.kernel.org/all/20230920061856.257597-1-ying.huang@xxxxxxxxx/
