On Fri, Jul 03, 2020 at 11:20:47PM +0200, Uladzislau Rezki wrote: > Some background: > Actually i have been thinking about making vmalloc address space to > be per-CPU, i.e. divide it to per-CPU address space making an allocation > lock-less. It will eliminate a high lock contention. When i have done > a prototype i noticed and realized that there is a silly issue with > nr_cpu_ids on some systems. vfree() may happen on a different CPU from the one which called vmalloc(), so I'm not sure you're going to get as large a win as you think you will.
