tree 27afdf3f60c21fde601df63d9e9998b0c758a3fe
parent 6f04f48dc9c0433e2bb687f5f7f7af1aba97b04d
author Davidlohr Bueso <davidlohr@hp.com> 1401923206 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1401926037 -0700

mm,vmacache: add debug data

Introduce a CONFIG_DEBUG_VM_VMACACHE option to enable counting the cache
hit rate -- exported in /proc/vmstat.

Any updates to the caching scheme needs this kind of data, thus it can
save some work re-implementing the counting all the time.

Signed-off-by: Davidlohr Bueso <davidlohr@hp.com>
Cc: Aswin Chandramouleeswaran <aswin@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>