bitbake: cooker/server: Fix up 100% CPU usage at idle

The recent inotify changes are causing a 100% cpu usage issue in the
idle handlers. To avoid this, we update the idle functions to optionally
report a float value which is the delay before the function needs to be
called again. 1 second is fine for the inotify handler, in reality its
more like 0.1s due to the default idle function sleep.

This reverts performance regressions of 1.5 minutes on a kernel build
and ~5-6 minutes on a image from scratch.

(Bitbake rev: 0e0ba408c2dce14a0fabd3fdf61d8465a031495b)

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

1 files changed, 1 insertions, 1 deletions

diff --git a/bitbake/lib/bb/cooker.py b/bitbake/lib/bb/cooker.py
index 57fb58157e..2176167eb7 100644
--- a/bitbake/lib/bb/cooker.py
+++ b/bitbake/lib/bb/cooker.py
@@ -142,7 +142,7 @@ class BBCooker:
                     # read notified events and enqeue them
                     n.read_events()
                     n.process_events()
-            return True
+            return 1.0
 
         self.configuration.server_register_idlecallback(_process_inotify_updates, [self.confignotifier, self.notifier])