On Tue, Nov 05, 2019 at 10:26:44AM +0800, Wei Yang wrote: > Hi, All, > > I am curious about the semantic of __count_vm_event[s]. > > For example, we count PGDEACTIVATE event in lru_deactivate_file_fn() and > lru_deactivate_fn(). One of them count with number of page, the other not. > > Just curious about the exact value we want to count. I don't understand the question. We deactivate one page in lru_deactivate_file_fn(). We deactivate several pages in shrink_active_list(). PGDEACTIVATE counts the number of pages which have been deactivated. Does that answer your question?