linux-kernel - Re: regression: 100% io-wait with 2.6.24-rcX

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Message-Id: <E1JDy5a-0001al-Tk@localhost.localdomain>
Date:	Sun, 13 Jan 2008 16:21:06 +0800
From:	Fengguang Wu <wfg@...l.ustc.edu.cn>
To:	Joerg Platte <jplatte@...sa.net>
Cc:	Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...e.hu>,
	linux-kernel@...r.kernel.org
Subject: Re: regression: 100% io-wait with 2.6.24-rcX

On Sun, Jan 13, 2008 at 09:05:43AM +0100, Joerg Platte wrote:
> Am Sonntag, 13. Januar 2008 schrieb Fengguang Wu:
> 
> > No idea yet :-/ I'm afraid I have to trouble you again - the bug just
> > refused to appear in my system. I prepared a kernel module for you to
> > gather more information:
> 
> > make && insmod ext2-writeback-debug.ko && sleep 1s && rmmod
> > ext2-writeback-debug dmesg > ext2-writeback-debug.dmesg
> 
> Unfortunately, I unable to compile the module:
 
> make -C /lib/modules/2.6.24-rc7-ext2/build SUBDIRS=/export/src modules
> make[1]: Entering directory `/export/src/linux-2.6.24-rc7'
>   CC [M]  /export/src/ext2-writeback-debug.o
> /export/src/ext2-writeback-debug.c:89: error: variable ‘my_kprobe’ has 
> initializer but incomplete type

Do you have CONFIG_KPROBES=y?

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