Android/frameworks_base
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Disable kernel UID updates until update lands.

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Current prebuilt kernel can result in the framework banging its head
against the wall writing the first duplicate update; it does this by
returning 0 for write().

We can revert this or flip the flag once an updated kernel lands.

Test: builds, boots
Bug: 33755020
Change-Id: Idb3e5ad40e2e6681848b47ce2b29dff9db3d4f6f
This commit is contained in:
Jeff Sharkey
2017-01-19 20:25:03 -07:00
parent f96e22429c
commit 063c454b07
1 changed files with 2 additions and 1 deletions
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3
services/usage/java/com/android/server/usage/UsageStatsService.java
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@@ -106,6 +106,7 @@ public class UsageStatsService extends SystemService implements
private static final long FLUSH_INTERVAL = COMPRESS_TIME ? TEN_SECONDS : TWENTY_MINUTES;
private static final long TIME_CHANGE_THRESHOLD_MILLIS = 2 * 1000; // Two seconds.
private static final boolean ENABLE_KERNEL_UPDATES = false;
private static final File KERNEL_COUNTER_FILE = new File("/proc/uid_procstat/set");
long mAppIdleScreenThresholdMillis;
@@ -241,7 +242,7 @@ public class UsageStatsService extends SystemService implements
postOneTimeCheckIdleStates();
}
if (KERNEL_COUNTER_FILE.exists()) {
if (ENABLE_KERNEL_UPDATES && KERNEL_COUNTER_FILE.exists()) {
try {
ActivityManager.getService().registerUidObserver(mUidObserver,
ActivityManager.UID_OBSERVER_PROCSTATE