[Ksummit-discuss] No more module removal -- Unconference track
Masami Hiramatsu
masami.hiramatsu.pt at hitachi.com
Wed Aug 27 06:43:23 UTC 2014
(2014/08/27 6:45), Jiri Kosina wrote:
> On Tue, 26 Aug 2014, David Howells wrote:
>
>>> What I found is that the module unloading involving 2 stop_machine()s
>>> for each module removing. It must not be needed.
>>
>> IIRC, at least one of the stop_machine() calls was to prevent problems between
>> module removal oopsing and the symbol lookup trying to look up whilst dumping
>> the oops.
>
> This would be solved if symbol lookup would be RCU-ized though.
>
Yes, I did that :)
https://lkml.org/lkml/2014/8/25/143
https://lkml.org/lkml/2014/8/25/144
https://lkml.org/lkml/2014/8/25/145
Thank you,
--
Masami HIRAMATSU
Software Platform Research Dept. Linux Technology Research Center
Hitachi, Ltd., Yokohama Research Laboratory
E-mail: masami.hiramatsu.pt at hitachi.com
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