tree df8109a175e146eae74ab4c32a29d5c5927673ea
parent 8e216a0bb425aecae9555f44a6661e134fe12b11
author Daniel Mentz <danielmentz@google.com> 1520484887 -0800
committer Daniel Mentz <danielmentz@google.com> 1520919344 +0000

ueventd: Increase uevent buffer size to 2MB

Let's increase the receive buffer size for the NETLINK_KOBJECT_UEVENT
socket to 2MB. Unless a large number of uevents queue up, that memory is
not allocated anyways. The receive buffer size serves only as an upper
limit for the total amount of memory consumed by all skbs queued to a
specific socket.

We experienced situations where ueventd got blocked for multiple seconds
while writing to /dev/kmsg, and the receive buffer overflowed in the
meantime.

Bug: 72648767
Change-Id: Ice6d7b9c5ed9c83efbad6111086ce95ac6432561