Lines Matching +full:wait +full:- +full:on +full:- +full:read

2 Soft-Dirty PTEs
5 The soft-dirty is a bit on a PTE which helps to track which pages a task
8   1. Clear soft-dirty bits from the task's PTEs.
13   2. Wait some time.
15   3. Read soft-dirty bits from the PTEs.
18      64-bit qword is the soft-dirty one. If set, the respective PTE was
23 when the soft-dirty bit is cleared. So, after this, when the task tries to
25 the soft-dirty bit on the respective PTE.
28 soft-dirty bits clear, the #PF-s that occur after that are processed fast.
30 the kernel does is finds this fact out and puts both writable and soft-dirty
31 bits on the PTE.
33 While in most cases tracking memory changes by #PF-s is more than enough
34 there is still a scenario when we can lose soft dirty bits -- a task
41 This feature is actively used by the checkpoint-restore project. You
42 can find more details about it on http://criu.org
45 -- Pavel Emelyanov, Apr 9, 2013