tree bca2b5ce7883454723142949432024fb2125174c
parent 076f80cb854992a6731e20058ddb0e2ba10220aa
author San Mehat <san@google.com> 1273084722 -0700
committer Colin Cross <ccross@android.com> 1308067770 -0700

staging: android: lowmemkiller: Substantially reduce overhead during reclaim

This patch optimizes lowmemkiller to not do any work when it has an outstanding
kill-request. This greatly reduces the pressure on the task_list lock
(improving interactivity), as well as improving the vmscan performance
when under heavy memory pressure (by up to 20x in tests).

Note: For this enhancement to work, you need CONFIG_PROFILING

Signed-off-by: San Mehat <san@google.com>