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authorArne Babenhauserheide <arne_bab@web.de>2010-10-12 19:19:39 +0200
committerArne Babenhauserheide <arne_bab@web.de>2010-10-12 19:19:39 +0200
commita3b989c2749ae8b6a69145184f9051c907e3ceb0 (patch)
tree0c2f3efd66d6991e88e8202ab8a80cb257e98e33 /open_issues/dbus_in_linux_kernel.mdwn
parent4f16a009926ea28a7be6a192126a75a206ad9f45 (diff)
parent8a86419c2083bcec0cd86e65376fb183c55a6c3c (diff)
Merge branch 'master' of flubber:~hurd-web/hurd-web
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+[[!meta copyright="Copyright © 2010 Free Software Foundation, Inc."]]
+
+[[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable
+id="license" text="Permission is granted to copy, distribute and/or modify this
+document under the terms of the GNU Free Documentation License, Version 1.2 or
+any later version published by the Free Software Foundation; with no Invariant
+Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license
+is included in the section entitled [[GNU Free Documentation
+License|/fdl]]."]]"""]]
+
+Might be interesting to watch how this develops.
+
+IRC, #hurd, August / September 2010
+
+ <neal> check this out:
+ <neal> someone is working on implementing dbus in linux
+ <neal> linux finally gets mach ipc ;-)
+ <marcusb> it's old news though, unless there is an update
+ <marcusb> and I think it was only the client?
+ <neal> youpi : someone is adding dbus ipc to the linux kernel
+ <neal> marcusb: I just heard about it.
+ <youpi> (it's crazy how this drives backward compared to a hurdish approach)
+ <youpi> what is the motivation for moving to the kernel?
+ <neal> context switch overhead
+ <azeem_> they wanna use it to talk to device drivers? :)
+ <kilobug> well, they did that with the in-kernel web server, but they
+ abandonned it later on
+ <neal> azeem: I don't think so.
+ <neal> dbus in the kernel is actually good for the Hurd as dbus IPC is
+ basically neutered Mach IPC
+ <marcusb> I don't think anybody wants to put the dbus server in the kernel
+ <neal> well, there is at least one person
+ <marcusb> maybe this is a different news from the one I read
+ <neal> Alban Crequy (albanc) is working out. He works for collabora, fwiw
+
+<http://alban.apinc.org/blog/2010/09/15/d-bus-in-the-kernel-faster/>
+
+ <marcusb> what I read was about hal etc
+ <marcusb> so that you don't need a user space daemon to glue the kernel to the
+ dbus world
+ <neal> I don't think that is what he is talking about
+ <marcusb> I can't find it anymore though. I mentioned it in this channel at
+ the time though, so it should be in the backlog
+ <marcusb> neal, yeah could very well be a separate thing
+ <marcusb> neal, dbus does have marginal support for fd passing though, and some
+ attempts on the mailing list to make "fds" an official type in the message
+ failed (as far as I could see, I didn't read the whole discussion)
+ <marcusb> so no mach ipc just yet
+ <neal> wrong
+ <neal> FD handling is in 1.4
+ <neal> type o, if I'm not mistaken
+ <marcusb> then the discussion moved on from initial rejection
+ <neal> no, 'h'
+ <marcusb> I'm out of date by two months
+ <marcusb> ok
+ <guillem> neal: AFAIR Marcel Holtmann talked about dbus in-kernel several years
+ ago, but he never ended up implementing it, or there were rumors he had
+ private "working code"