tree 139755960889f26311a6445abf96d97a22bf2cb0
parent c6f43cdfb0e555bd78026b34e236cc6da933a850
author Suren Baghdasaryan <surenb@google.com> 1589318652 -0700
committer Suren Baghdasaryan <surenb@google.com> 1589389759 +0000

Fix Lost RAM calculation by accounting for ION mapped heaps

ION mapped heaps are not reflected in process PSS because ION driver
maps them using remap_pfn_range that sets VM_PFNMAP flag for each
mapped ION heap VMA and consequently excludes these VMAs from PSS
calculation. Change memory accounting to consider ION mapped heaps
as part of kernel used memory which fixes the Lost RAM calculation
that currently includes mapped ION heaps.

Bug: 155409819
Test: verify Lost RAM after opening camera app
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Change-Id: I2bad40bbe7d14b1c61534d661b612200ef1084e4