tree c9c7818cca59be197e4fda230a6934bbe7720bf8
parent cad9204f4c9400e93ea584e1bbad9709443304a8
author Sonny Rao <sonnyrao@chromium.org> 1425618639 -0800
committer ChromeOS Commit Bot <chromeos-commit-bot@chromium.org> 1434358913 +0000

punybench: hogmem: try harder if we cannot allocate hogmem

Some systems have more physical memory than virtual address space
like certain Arm v7A systems with 4GB of physical memory but only 3GB
of virtual address space, and in these cases the hog function will try
to allocate more memory than possible.  This changes the hog function
to back off at 1MiB increments.

BUG=chrome-os-partner:30913
TEST=kernel_fs_Punybench passes on a 4GB Nyan system

Change-Id: I458666551998e6cb0d78aef600910e317343ad3b
Reviewed-on: https://chromium-review.googlesource.com/256825
Reviewed-by: Gwendal Grignou <gwendal@chromium.org>
Commit-Queue: Sonny Rao <sonnyrao@chromium.org>
Tested-by: Sonny Rao <sonnyrao@chromium.org>