Re: [-mm patch] BLK_DEV_IO_TRACE Kconfig fixes

[Adrian Bunk <bunk@stusta.de>]

On Sun, Mar 26, 2006 at 02:27:44PM +0200, Jens Axboe wrote:
> On Sun, Mar 26 2006, Adrian Bunk wrote:
> > On Thu, Mar 23, 2006 at 01:40:46AM -0800, Andrew Morton wrote:
> > >...
> > > Changes since 2.6.16-rc6-mm2:
> > >...
> > >  git-blktrace.patch
> > >...
> > >  git trees.
> > >...
> > 
> > BLK_DEV_IO_TRACE breaks the rule "If you select something, you must 
> > endure that the dependencies of what you are select'ing are fulfilled."
> > resulting in the following compile error with CONFIG_SYSFS=n:
> > 
> > <--  snip  -->
> > 
> > ...
> >   LD      .tmp_vmlinux1
> > fs/built-in.o: In function `debugfs_init':inode.c:(.init.text+0x3d35): 
> > undefined reference to `kernel_subsys'
> > make: *** [.tmp_vmlinux1] Error 1
> > 
> > <--  snip  -->
> > 
> > This patch fixes this bug.
> > 
> > Additionally, it moves the BLK_DEV_IO_TRACE option that now depends on 
> > DEBUG_KERNEL into the menu with the other DEBUG_KERNEL options.
> 
> Thanks for the sysfs fix, however don't move the kconfig entry, this
> isn't a debug option.

It select's an option depending on DEBUG_KERNEL, and therefore also has 
to depend on DEBUG_KERNEL.

> Jens Axboe

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed