From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ@public.gmane.org Subject: [Bug 76732] Kworker using 100% CPU Date: Fri, 04 Apr 2014 23:19:11 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1833751417==" Return-path: In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: nouveau-bounces-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org Sender: "Nouveau" To: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org List-Id: nouveau.vger.kernel.org --===============1833751417== Content-Type: multipart/alternative; boundary="1396653551.4c102.23899"; charset="us-ascii" --1396653551.4c102.23899 Date: Fri, 4 Apr 2014 23:19:11 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" https://bugs.freedesktop.org/show_bug.cgi?id=76732 --- Comment #30 from Dale Hamel --- I recently generated this bug: https://bugs.freedesktop.org/show_bug.cgi?id=77073 Which appears to only happen when external, displayport display is attached. I'm going to try rolling back to kernel 3.8 to see if that resolves it. I attached a bunch of debug info to my ticket which I hope will be useful. The main thing of note is that the kworker is doing: kworker/0:3-1128 [000] d.s2 1973.688813: workqueue_queue_work: work struct=ffff88046f2135d8 function=od_dbs_timer [cpufreq_ondemand] workqueue=ffff88046d17ba00 req_cpu=0 cpu=0 kworker/0:3-1128 [000] d.h2 1973.704711: workqueue_queue_work: work struct=ffffffff819b85e0 function=push_to_pool workqueue=ffff88046d17ba00 req_cpu=32 cpu=0 kworker/0:3-1128 [000] d.h3 1973.757128: workqueue_queue_work: work struct=ffff88045db116e0 function=nouveau_connector_hotplug_work workqueue=ffff88046d17ba00 req_cpu=32 cpu=0 kworker/0:3-1128 [000] d.h3 1973.830281: workqueue_queue_work: work struct=ffff88045db116e0 function=nouveau_connector_hotplug_work workqueue=ffff88046d17ba00 req_cpu=32 cpu=0 kworker/0:3-1128 [000] d.s3 1973.838757: workqueue_queue_work: work struct=ffff88046f2135d8 function=od_dbs_timer [cpufreq_ondemand] workqueue=ffff88046d17ba00 req_cpu=0 cpu=0 kworker/0:3-1128 [000] d.h2 1973.859889: workqueue_queue_work: work struct=ffffffff819b85e0 function=push_to_pool workqueue=ffff88046d17ba00 req_cpu=32 cpu=0 kworker/0:3-1128 [000] d.h3 1973.903514: workqueue_queue_work: work struct=ffff88045db116e0 function=nouveau_connector_hotplug_work workqueue=ffff88046d17ba00 req_cpu=32 cpu=0 Over and over again. -- You are receiving this mail because: You are the assignee for the bug. --1396653551.4c102.23899 Date: Fri, 4 Apr 2014 23:19:11 +0000 MIME-Version: 1.0 Content-Type: text/html; charset="UTF-8"

Comment # 30 on bug 76732 from 
I recently generated this bug:

https://bugs.freedesktop.org/show_bug.cgi?id=77073

Which appears to only happen when external, displayport display is attached.

I'm going to try rolling back to kernel 3.8 to see if that resolves it.

I attached a bunch of debug info to my ticket which I hope will be useful. The
main thing of note is that the kworker is doing:



     kworker/0:3-1128 [000] d.s2 1973.688813: workqueue_queue_work: work
struct=ffff88046f2135d8 function=od_dbs_timer [cpufreq_ondemand]
workqueue=ffff88046d17ba00 req_cpu=0 cpu=0
     kworker/0:3-1128 [000] d.h2 1973.704711: workqueue_queue_work: work
struct=ffffffff819b85e0 function=push_to_pool workqueue=ffff88046d17ba00
req_cpu=32 cpu=0
     kworker/0:3-1128 [000] d.h3 1973.757128: workqueue_queue_work: work
struct=ffff88045db116e0 function=nouveau_connector_hotplug_work
workqueue=ffff88046d17ba00 req_cpu=32 cpu=0
     kworker/0:3-1128 [000] d.h3 1973.830281: workqueue_queue_work: work
struct=ffff88045db116e0 function=nouveau_connector_hotplug_work
workqueue=ffff88046d17ba00 req_cpu=32 cpu=0
     kworker/0:3-1128 [000] d.s3 1973.838757: workqueue_queue_work: work
struct=ffff88046f2135d8 function=od_dbs_timer [cpufreq_ondemand]
workqueue=ffff88046d17ba00 req_cpu=0 cpu=0
     kworker/0:3-1128 [000] d.h2 1973.859889: workqueue_queue_work: work
struct=ffffffff819b85e0 function=push_to_pool workqueue=ffff88046d17ba00
req_cpu=32 cpu=0
     kworker/0:3-1128 [000] d.h3 1973.903514: workqueue_queue_work: work
struct=ffff88045db116e0 function=nouveau_connector_hotplug_work
workqueue=ffff88046d17ba00 req_cpu=32 cpu=0



Over and over again.

You are receiving this mail because:
  • You are the assignee for the bug.
--1396653551.4c102.23899-- --===============1833751417== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ Nouveau mailing list Nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org http://lists.freedesktop.org/mailman/listinfo/nouveau --===============1833751417==--