linux-kernel - Re: [2.6 patch] scsi/qlogicpti.c section fixes

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Date:	Thu, 31 Jan 2008 00:28:59 +0200
From:	Adrian Bunk <bunk@...nel.org>
To:	James Bottomley <James.Bottomley@...senPartnership.com>
Cc:	davem@...emloft.net, linux-scsi@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [2.6 patch] scsi/qlogicpti.c section fixes

On Wed, Jan 30, 2008 at 03:00:16PM -0600, James Bottomley wrote:
> 
> On Wed, 2008-01-30 at 22:03 +0200, Adrian Bunk wrote:
> > This patch fixes the following section mismatches:
> > 
> > <--  snip  -->
> > 
> > ...
> > WARNING: drivers/scsi/qlogicpti.o(.devexit.text+0x8): Section mismatch in reference from the function qpti_sbus_remove() to the function .init.text:qpti_chain_del()
> > WARNING: drivers/scsi/qlogicpti.o(.devinit.text+0x56c): Section mismatch in reference from the function qpti_sbus_probe() to the function .init.text:qpti_map_regs()
> > WARNING: drivers/scsi/qlogicpti.o(.devinit.text+0x580): Section mismatch in reference from the function qpti_sbus_probe() to the function .init.text:qpti_register_irq()
> > WARNING: drivers/scsi/qlogicpti.o(.devinit.text+0x594): Section mismatch in reference from the function qpti_sbus_probe() to the function .init.text:qpti_get_scsi_id()
> > WARNING: drivers/scsi/qlogicpti.o(.devinit.text+0x5b8): Section mismatch in reference from the function qpti_sbus_probe() to the function .init.text:qpti_map_queues()
> > WARNING: drivers/scsi/qlogicpti.o(.devinit.text+0x780): Section mismatch in reference from the function qpti_sbus_probe() to the function .init.text:qpti_chain_add()
> > ...
> 
> OK, look, this is really getting out of hand.
> 
> __init is possibly justifiable with a few hundred k savings on boot.
> __devinit and the rest are surely killable on the grounds they provide
> little benefit for all the pain they cause.
> 
> all __exit seems to do is set us up for unreferenced pointers in
> discarded sections, so could we kill that too?

When you are on x86 what you see as "Freeing unused kernel memory: "
at the end of booting contains both __init and __exit code.

> James

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

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