Andrew Morton <[email protected]> writes: > On Tue, 25 Jul 2017 09:51:46 +0800 "Huang, Ying" <[email protected]> wrote: > >> The swap cache stats could be gotten only via sysrq, which isn't >> convenient in some situation. So the sysfs interface of swap cache >> stats is added for that. The added sysfs directories/files are as >> follow, >> >> /sys/kernel/mm/swap >> /sys/kernel/mm/swap/cache_find_total >> /sys/kernel/mm/swap/cache_find_success >> /sys/kernel/mm/swap/cache_add >> /sys/kernel/mm/swap/cache_del >> /sys/kernel/mm/swap/cache_pages > > We should document this somewhere. Documentation/ABI/ is the formal > place for sysfs files, but nobody will think to look there for VM > things, so perhaps place a pointer to the Documentation/ABI/ files > within Documentation/vm somewhere, only there isn't an appropriate > Documentation/vm file ;) > > Or just put all these things in debugfs. These are pretty specialized > things and appear to be developer-only files of short-term interest?
Yes. Debugfs should be better place for these. Will update it in the next version. And I also introduced sysfs interface in [2/6] and [5/6] /sys/kernel/mm/swap/ra_hits /sys/kernel/mm/swap/ra_total /sys/kernel/mm/swap/vma_ra_enabled /sys/kernel/mm/swap/vma_ra_max_order Will add ABI document for them. Best Regards, Huang, Ying
