tree ba69d4d05fd9a021a2a4d0b4d09a54e7f5337ec7
parent 1c73ffbd4cf8f62de529ad381d83fb79b76042de
author Soby Mathew <soby.mathew@arm.com> 1416307504 +0000
committer Dan Handley <dan.handley@arm.com> 1421924263 +0000

Remove the wfe() for bounded wait in bakery_lock

This patch is an optimization in the bakery_lock_get() function
which removes the wfe() when waiting for other contenders to choose
their ticket i.e when their `entering` flag is set. Since the time
taken to execute bakery_get_ticket() by other contenders is bounded,
this wait is a bounded time wait. Hence the removal of wfe() and the
corresponding sev() and dsb() in bakery_get_ticket() may result
in better time performance during lock acquisition.

Change-Id: I141bb21294226b54cb6e89e7cac0175c553afd8d