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lmkd
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Snap for 4565898 from 207a211804a60cb46d7ee9785c5055968e609188 to pi-release 

Change-Id: Id6472866aa17835af1d73e04ce4c448f4f475e00
This commit is contained in:
android-build-team Robot 2018-01-25 09:06:24 +00:00
parent 42bdbfe7b0 dba30fb82c
commit 6016d24455
1 changed files with 10 additions and 1 deletions
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11
lmkd.c
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@ -1112,7 +1112,16 @@ int main(int argc __unused, char **argv __unused) {
kill_timeout_ms =
(unsigned long)property_get_int32("ro.lmk.kill_timeout_ms", 0);
if (mlockall(MCL_CURRENT | MCL_FUTURE))
// MCL_ONFAULT pins pages as they fault instead of loading
// everything immediately all at once. (Which would be bad,
// because as of this writing, we have a lot of mapped pages we
// never use.) Old kernels will see MCL_ONFAULT and fail with
// EINVAL; we ignore this failure.
//
// N.B. read the man page for mlockall. MCL_CURRENT | MCL_ONFAULT
// pins ⊆ MCL_CURRENT, converging to just MCL_CURRENT as we fault
// in pages.
if (mlockall(MCL_CURRENT | MCL_FUTURE | MCL_ONFAULT) && errno != EINVAL)
ALOGW("mlockall failed: errno=%d", errno);
sched_setscheduler(0, SCHED_FIFO, &param);