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Groups > linux.kernel > #1639109

Re: WMI and Kernel:User interface

From Darren Hart <dvhart@infradead.org>
Newsgroups linux.kernel
Subject Re: WMI and Kernel:User interface
Date 2017-05-11 01:30 +0200
Message-ID <tFJdn-70m-7@gated-at.bofh.it> (permalink)
References <tFmA9-5P-1@gated-at.bofh.it> <tFscx-4VM-3@gated-at.bofh.it> <tFt8B-5Ab-9@gated-at.bofh.it> <tFHXX-6iT-7@gated-at.bofh.it>
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On Wed, May 10, 2017 at 10:02:46PM +0000, Mario.Limonciello@dell.com wrote:
> This above discussion is confusing because it's referring specifically to "WMI events".
> related to brightness keypresses that don't make sense to go to userspace.

Let's elaborate on this point. Why are events not interesting to user space?

I don't think it would be too problematic to create a chardev for an Event GUID,
give platform drivers first chance to handle an event, and pass it up to
userspace for exported GUIDs if the kernel doesn't consume the event.

-- 
Darren Hart
VMware Open Source Technology Center

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Thread

WMI and Kernel:User interface Darren Hart <dvhart@infradead.org> - 2017-05-10 01:20 +0200
  Re: WMI and Kernel:User interface Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-05-10 07:20 +0200
    Re: WMI and Kernel:User interface Darren Hart <dvhart@infradead.org> - 2017-05-10 08:20 +0200
      RE: WMI and Kernel:User interface <Mario.Limonciello@dell.com> - 2017-05-11 00:10 +0200
        Re: WMI and Kernel:User interface Darren Hart <dvhart@infradead.org> - 2017-05-11 00:20 +0200
        Re: WMI and Kernel:User interface Andy Lutomirski <luto@kernel.org> - 2017-05-11 01:00 +0200
          Re: WMI and Kernel:User interface Darren Hart <dvhart@infradead.org> - 2017-05-11 01:30 +0200
        Re: WMI and Kernel:User interface Darren Hart <dvhart@infradead.org> - 2017-05-11 01:30 +0200

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