tree eba0887b952a02669f503511be81d05b829d8e9a
parent c4ea41ba195d01c9af66fb28711a16cc97caa9c5
author Riley Andrews <riandrews@google.com> 1498762897 -0700
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1500295459 +0200

binder: Use wake up hint for synchronous transactions.

Use wake_up_interruptible_sync() to hint to the scheduler binder
transactions are synchronous wakeups. Disable preemption while waking
to avoid ping-ponging on the binder lock.

Signed-off-by: Todd Kjos <tkjos@google.com>
Signed-off-by: Omprakash Dhyade <odhyade@codeaurora.org>
Cc: stable <stable@vger.kernel.org> # 4.4+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>