perfboot.py: warn if dm-verity is disabled
Disabling the feature sometimes skews benchmark results.
Bug: 22207911
Change-Id: Idedc7eb14e3cc4e8687b0c0e2975f10a3c4154e5
diff --git a/init/perfboot.py b/init/perfboot.py
index 2cd4699..13da328 100755
--- a/init/perfboot.py
+++ b/init/perfboot.py
@@ -205,6 +205,16 @@
atexit.register(cleanup)
+def check_dm_verity_settings(device):
+ device.wait()
+ for partition in ['system', 'vendor']:
+ verity_mode = device.get_prop('partition.%s.verified' % partition)
+ if verity_mode is None:
+ logging.warning('dm-verity is not enabled for /%s. Did you run '
+ 'adb disable-verity? That may skew the result.',
+ partition)
+
+
def read_event_tags(tags_file):
"""Reads event tags from |tags_file|."""
if not tags_file:
@@ -393,6 +403,7 @@
args.output = 'perf-%s-%s.tsv' % (
device.get_prop('ro.build.flavor'),
device.get_prop('ro.build.version.incremental'))
+ check_dm_verity_settings(device)
record_list = []
event_tags = read_event_tags(args.tags)