Bootloader set androidboot.revision on kernel command line and we set
ro.boot.hardware.revision to a numerical string accordingly.
Bug: 64375827
Change-Id: Ib814f765b53155721d86035405fbc6490fb5a2c3
Signed-off-by: Thierry Strudel <tstrudel@google.com>
Tested 1/2x, 1x, 2x, and 4x the current readahead buffer and noop and
cfq I/O schedulers for /dev/block/sda, which contains /data. The most
consistent performance boost was seen across all UFS vendors and storage
sizes using cfq and a readahead buffer of 1024.
Bug: 38000161
Test: Compared 1P app launch times using app-launcher for schedulers
(noop, cfq) and readahead buffer sizes (128,512,1024,2048)
Change-Id: Ifcc9145d6f7a77ba4b3844b7892291eb348d9e1c
With noop scheduler, I see dramatic jank with an irritant i/o thread;
going back to cfq, which doesn't have nearly the same negative impact
on UX.
Bug: 62375787
Test: boot, scroll a lot
Change-Id: I3c1ad17f432b25b5359f813e070fd1266dac1f87
Disable kernel module loading after boot on user builds.
Bug: 38204366
Test: boot walleye, confirm kernel module does not load after boot
Change-Id: I40217ff37c1b1bcf00155e5bec74b92a020481f7
