On Mon, 26 Mar 2018, Andi Kleen wrote: > > Aside: should there be a new spec_flt field for struct task_struct that > > complements maj_flt and min_flt and be exported through /proc/pid/stat? > > No. task_struct is already too bloated. If you need per process tracking > you can always get it through trace points. >
Hi Andi, We have count_vm_event(PGFAULT); count_memcg_event_mm(vma->vm_mm, PGFAULT); in handle_mm_fault() but not counterpart for spf. I think it would be helpful to be able to determine how much faulting can be done speculatively if there is no per-process tracking without tracing.