Messages in this thread | ![/](/images/icornerl.gif) | | Subject | Re: 4.12.0-rc6+: WQ_MEM_RECLAIM hci0:hci_power_off is flushing !WQ_MEM_RECLAIM events:btusb_work | From | Marcel Holtmann <> | Date | Tue, 27 Jun 2017 19:28:40 +0200 |
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Hi Tejun,
>> On my Dell XPS 13 9343 (x86_64), the following warning was logged right >> after a resume from suspend-to-mem (not on *every* resume, though, so it >> might be hard to reproduce). The kernel is v4.12.0-rc6+ as of 94a6df251dd0, >> and I don't really use bluetooth, though the drivers are loaded: >> >> PM: Finishing wakeup. >> OOM killer enabled. >> Restarting tasks ... done. >> Bluetooth: hci0: read Intel version: 370710018002030d00 >> Bluetooth: hci0: Intel Bluetooth firmware file: intel/ibt-hw-37.7.10-fw-1.80.2.3.d.bseq >> Bluetooth: hci0: Intel Bluetooth firmware patch completed and activated >> ... <more, unrelated messages> >> workqueue: WQ_MEM_RECLAIM hci0:hci_power_off is flushing !WQ_MEM_RECLAIM events:btusb_work > > So, WQ_MEM_RECLAIM has to be transitive; otherwise, it doesn't mean > anything. I have a hard time believing that bluetooth actually needs > WQ_MEM_RECLAIM unless people mount nfs through a bluetooth tethered > phone. Would it be possible to remove WQ_MEM_RECLAIM from these > workqueues?
frankly I do not remember. We used what was recommended to use. I know that the only requirement in one case is that it is a truly single workqueue.
Regards
Marcel
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