bitbake: runqueue: Optimise task filtering

We were seeing this running thousands of times with hashequiv, do
the filtering where it makes more sense and make it persist.

(Bitbake rev: 2cfeb9998a8ad5b1dcda0bb4e192c5e4306dab17)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 2 insertions, 3 deletions

diff --git a/bitbake/lib/bb/runqueue.py b/bitbake/lib/bb/runqueue.py
index 73775d9761..b90ac875e3 100644
--- a/bitbake/lib/bb/runqueue.py
+++ b/bitbake/lib/bb/runqueue.py
@@ -148,8 +148,9 @@ class RunQueueScheduler(object):
         """
         Return the id of the first task we find that is buildable
         """
+        # Once tasks are running we don't need to worry about them again
+        self.buildable.difference_update(self.rq.runq_running)
         buildable = set(self.buildable)
-        buildable.difference_update(self.rq.runq_running)
         buildable.difference_update(self.rq.holdoff_tasks)
         buildable.intersection_update(self.rq.tasks_covered | self.rq.tasks_notcovered)
         if not buildable:
@@ -207,8 +208,6 @@ class RunQueueScheduler(object):
 
     def newbuildable(self, task):
         self.buildable.add(task)
-        # Once tasks are running we don't need to worry about them again
-        self.buildable.difference_update(self.rq.runq_running)
 
     def removebuildable(self, task):
         self.buildable.remove(task)