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Re: [announce] "kill the Big Kernel Lock (BKL)" tree

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From: Alan Cox <alan@...>
To: Andi Kleen <andi@...>
Cc: Linus Torvalds <torvalds@...>, Jonathan Corbet <corbet@...>, Ingo Molnar <mingo@...>, Andrew Morton <akpm@...>, Peter Zijlstra <a.p.zijlstra@...>, Thomas Gleixner <tglx@...>, Alexander Viro <viro@...>, <linux-kernel@...>
Subject: Re: [announce] "kill the Big Kernel Lock (BKL)" tree
Date: Thursday, May 15, 2008 - 9:30 am

> own lock_kernel calls, but why in the old drivers? For those it's very

Because

- You need to verify the locking assumptions that remain are entirely
driver internal
- At the point you achieve that you've done *ALL* the work required to
add a driver specific lock

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Messages in current thread:
[announce] "kill the Big Kernel Lock (BKL)" tree, Ingo Molnar, (Wed May 14, 1:49 pm)
Re: [announce] "kill the Big Kernel Lock (BKL)" tree, Linus Torvalds, (Thu May 15, 1:41 pm)
Re: [announce] "kill the Big Kernel Lock (BKL)" tree, Arjan van de Ven, (Thu May 15, 4:27 pm)
Re: [announce] "kill the Big Kernel Lock (BKL)" tree, Peter Zijlstra, (Thu May 15, 4:45 pm)
Re: [announce] "kill the Big Kernel Lock (BKL)" tree, Arjan van de Ven, (Thu May 15, 5:22 pm)
Re: [announce] "kill the Big Kernel Lock (BKL)" tree, Linus Torvalds, (Wed May 14, 2:41 pm)
Re: [announce] "kill the Big Kernel Lock (BKL)" tree, Ingo Molnar, (Wed May 14, 3:41 pm)
Re: [announce] "kill the Big Kernel Lock (BKL)" tree, Frederik Deweerdt, (Wed May 14, 4:05 pm)
Re: [announce] "kill the Big Kernel Lock (BKL)" tree, Andi Kleen, (Wed May 14, 2:30 pm)
Re: [announce] "kill the Big Kernel Lock (BKL)" tree, Alan Cox, (Wed May 14, 5:00 pm)
Re: [announce] "kill the Big Kernel Lock (BKL)" tree, Andi Kleen, (Wed May 14, 5:13 pm)
Re: [announce] "kill the Big Kernel Lock (BKL)" tree, H. Peter Anvin, (Wed May 14, 5:16 pm)
Re: [announce] "kill the Big Kernel Lock (BKL)" tree, Alan Cox, (Wed May 14, 5:17 pm)
Re: [announce] "kill the Big Kernel Lock (BKL)" tree, Alan Cox, (Wed May 14, 5:19 pm)
Re: [announce] "kill the Big Kernel Lock (BKL)" tree, Linus Torvalds, (Wed May 14, 5:45 pm)
Re: [announce] "kill the Big Kernel Lock (BKL)" tree, Andi Kleen, (Wed May 14, 6:03 pm)
Re: [announce] "kill the Big Kernel Lock (BKL)" tree, Alan Cox, (Thu May 15, 9:34 am)
Re: [announce] "kill the Big Kernel Lock (BKL)" tree, Andi Kleen, (Thu May 15, 10:27 am)
Re: [announce] "kill the Big Kernel Lock (BKL)" tree, Alan Cox, (Thu May 15, 11:36 am)
Re: [announce] "kill the Big Kernel Lock (BKL)" tree, Andi Kleen, (Fri May 16, 6:21 am)
Re: [announce] "kill the Big Kernel Lock (BKL)" tree, Ingo Molnar, (Thu May 15, 4:02 am)
Re: [announce] "kill the Big Kernel Lock (BKL)" tree , Jonathan Corbet, (Wed May 14, 5:45 pm)
Re: [announce] "kill the Big Kernel Lock (BKL)" tree , Jan Engelhardt, (Thu May 15, 4:44 am)
Re: [announce] "kill the Big Kernel Lock (BKL)" tree, Diego Calleja, (Thu May 15, 10:54 am)
Re: [announce] "kill the Big Kernel Lock (BKL)" tree , Linus Torvalds, (Wed May 14, 5:56 pm)
Re: [announce] "kill the Big Kernel Lock (BKL)" tree , Jonathan Corbet, (Wed May 14, 6:07 pm)
Re: [announce] "kill the Big Kernel Lock (BKL)" tree, Alan Cox, (Thu May 22, 4:20 pm)
Re: [announce] "kill the Big Kernel Lock (BKL)" tree , Linus Torvalds, (Wed May 14, 6:14 pm)
[PATCH, RFC] char dev BKL pushdown , Jonathan Corbet, (Fri May 16, 11:44 am)
Re: [PATCH, RFC] char dev BKL pushdown , Linus Torvalds, (Sat May 17, 5:58 pm)
Re: [PATCH, RFC] char dev BKL pushdown , Jonathan Corbet, (Sun May 18, 4:07 pm)
Re: [PATCH, RFC] char dev BKL pushdown , Linus Torvalds, (Fri May 16, 12:30 pm)
Re: [PATCH, RFC] char dev BKL pushdown , Jonathan Corbet, (Fri May 16, 12:43 pm)
Re: [PATCH, RFC] char dev BKL pushdown, Arnd Bergmann, (Sat May 17, 5:15 pm)
Re: [PATCH, RFC] char dev BKL pushdown , Jonathan Corbet, (Sun May 18, 4:26 pm)
Re: [PATCH, RFC] char dev BKL pushdown, Arnd Bergmann, (Mon May 19, 7:07 pm)
Re: [PATCH, RFC] char dev BKL pushdown , Jonathan Corbet, (Tue May 20, 11:13 am)
Re: [PATCH, RFC] char dev BKL pushdown, Arnd Bergmann, (Tue May 20, 1:21 pm)
Re: [PATCH, RFC] char dev BKL pushdown, Alan Cox, (Tue May 20, 2:51 pm)
[PATCH 1/3, RFC] misc char dev BKL pushdown, Arnd Bergmann, (Mon May 19, 7:26 pm)
Re: [PATCH 1/3, RFC] misc char dev BKL pushdown, Mike Frysinger, (Tue May 20, 7:01 pm)
Re: [PATCH 1/3, RFC] misc char dev BKL pushdown , Jonathan Corbet, (Tue May 20, 7:25 pm)
Re: [PATCH 1/3, RFC] misc char dev BKL pushdown, Mike Frysinger, (Wed May 21, 12:22 pm)
Re: [PATCH 1/3, RFC] misc char dev BKL pushdown, Alan Cox, (Tue May 20, 4:46 am)
Re: [PATCH 1/3, RFC] misc char dev BKL pushdown, Mike Frysinger, (Mon May 19, 8:07 pm)
Re: [PATCH 1/3, RFC] misc char dev BKL pushdown , Jonathan Corbet, (Mon May 19, 8:21 pm)
Re: [PATCH 1/3, RFC] misc char dev BKL pushdown, Mike Frysinger, (Mon May 19, 8:46 pm)
[PATCH 3/3, RFC] remove BKL from misc_open(), Arnd Bergmann, (Mon May 19, 7:34 pm)
Re: [PATCH, RFC] char dev BKL pushdown, Alan Cox, (Fri May 16, 12:22 pm)
Re: [PATCH, RFC] char dev BKL pushdown, Christoph Hellwig, (Fri May 16, 11:49 am)
[PATCH] kill empty chardev open/release methods, Christoph Hellwig, (Fri May 16, 12:03 pm)
Re: [PATCH] kill empty chardev open/release methods, Alan Cox, (Fri May 16, 4:55 pm)
Re: [PATCH] kill empty chardev open/release methods , Jonathan Corbet, (Sun May 18, 3:46 pm)
Re: [PATCH] kill empty chardev open/release methods, Alan Cox, (Sun May 18, 3:58 pm)
Re: [PATCH] kill empty chardev open/release methods, Alan Cox, (Fri May 16, 12:24 pm)
Re: [announce] "kill the Big Kernel Lock (BKL)" tree, Andi Kleen, (Wed May 14, 6:11 pm)
Re: [announce] "kill the Big Kernel Lock (BKL)" tree, Linus Torvalds, (Wed May 14, 6:16 pm)
Re: [announce] "kill the Big Kernel Lock (BKL)" tree, Andi Kleen, (Wed May 14, 6:21 pm)
Re: [announce] "kill the Big Kernel Lock (BKL)" tree, Alan Cox, (Thu May 15, 9:30 am)
Re: [announce] "kill the Big Kernel Lock (BKL)" tree, John Stoffel, (Thu May 15, 11:05 am)
Re: [announce] "kill the Big Kernel Lock (BKL)" tree, Andi Kleen, (Thu May 15, 11:10 am)
Re: [announce] "kill the Big Kernel Lock (BKL)" tree, John Stoffel, (Thu May 15, 11:18 am)
Re: [announce] "kill the Big Kernel Lock (BKL)" tree, Andi Kleen, (Thu May 15, 11:45 am)
Re: [announce] "kill the Big Kernel Lock (BKL)" tree, Alan Cox, (Wed May 14, 5:39 pm)
Re: [announce] "kill the Big Kernel Lock (BKL)" tree, Kevin Winchester, (Fri May 16, 8:14 pm)
Re: [announce] "kill the Big Kernel Lock (BKL)" tree, Kevin Winchester, (Fri May 16, 8:37 pm)
Re: [announce] "kill the Big Kernel Lock (BKL)" tree, Alan Cox, (Wed May 14, 5:46 pm)
Re: [announce] "kill the Big Kernel Lock (BKL)" tree, Linus Torvalds, (Wed May 14, 6:11 pm)
Re: [announce] "kill the Big Kernel Lock (BKL)" tree, Andi Kleen, (Wed May 14, 6:15 pm)