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Home » Mailing list archives » linux-kernel » 2008 » May » 17

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

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From: Kevin Winchester <kjwinchester@...>
To: Ingo Molnar <mingo@...>
Cc: <linux-kernel@...>, Linus Torvalds <torvalds@...>, Andrew Morton <akpm@...>, Peter Zijlstra <a.p.zijlstra@...>, Thomas Gleixner <tglx@...>, Alan Cox <alan@...>, Alexander Viro <viro@...>
Subject: Re: [announce] "kill the Big Kernel Lock (BKL)" tree
Date: Friday, May 16, 2008 - 8:14 pm

Ingo Molnar wrote:

<snip description and patches>

I decided to give this tree a try, and I got:


[4294034.386085] ------------[ cut here ]------------
[4294034.387882] WARNING: at fs/proc/generic.c:669 
create_proc_entry+0x3d/0xc5()
[4294034.390059] Pid: 2565, comm: Xorg Not tainted 
2.6.26-rc2-00456-gd9df34e #35
[4294034.392682]
[4294034.392683] Call Trace:
[4294034.394071]  [<ffffffff8022a8ac>] warn_on_slowpath+0x53/0x81
[4294034.394077]  [<ffffffff802b57b4>] ? proc_register+0xf7/0x162
[4294034.394081]  [<ffffffff802b580b>] ? proc_register+0x14e/0x162
[4294034.394087]  [<ffffffff804afa05>] ? _spin_unlock+0x30/0x4b
[4294034.394091]  [<ffffffff802b580b>] ? proc_register+0x14e/0x162
[4294034.394095]  [<ffffffff8021a127>] ? startup_ioapic_irq+0x54/0x5f
[4294034.394099]  [<ffffffff802b5fcc>] create_proc_entry+0x3d/0xc5
[4294034.394103]  [<ffffffff80252008>] register_irq_proc+0x84/0xa0
[4294034.394108]  [<ffffffff80250b1a>] setup_irq+0x1b2/0x21b
[4294034.394113]  [<ffffffff80250cc8>] request_irq+0xf1/0x117
[4294034.394117]  [<ffffffff8038aaaa>] ? radeon_driver_irq_handler+0x0/0x7e
[4294034.394122]  [<ffffffff803789b6>] ? drm_control+0x0/0x186
[4294034.394126]  [<ffffffff80378acf>] drm_control+0x119/0x186
[4294034.394130]  [<ffffffff803770be>] drm_ioctl+0x1d3/0x265
[4294034.394589]  [<ffffffff80283e5e>] vfs_ioctl+0x5e/0x77
[4294034.394593]  [<ffffffff802840d2>] do_vfs_ioctl+0x25b/0x270
[4294034.394598]  [<ffffffff804af23e>] ? trace_hardirqs_on_thunk+0x35/0x3a
[4294034.394601]  [<ffffffff80284129>] sys_ioctl+0x42/0x65
[4294034.394606]  [<ffffffff8020b2eb>] system_call_after_swapgs+0x7b/0x80
[4294034.411597]
[4294034.411601] ---[ end trace 7f52164e4c2b9927 ]---

I have no idea if that is even related to the BKL or not, I haven't even 
opened the source file yet, but I figured I'd report it.

-- 
Kevin Winchester
--
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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)

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