RE : RE: [microblaze-uclinux] undefined __down_interruptible and __up

[Reynes Philippe <tremyfr@xxxxxxxx>]

Hi all

I've got the same problem. I've tried this solution, and I've got the same
behaviour as victor. 

It seems to work fine if I add the EXPORT_SYMBOL in arch/microblaze/kernel/microblaze_ksyms.c
At the end of this file, I've added : 

    /* semaphore */
EXPORT_SYMBOL(__up);
EXPORT_SYMBOL(__down);
EXPORT_SYMBOL(__down_interruptible);
EXPORT_SYMBOL(__down_trylock);

regards,
Philippe


victor-sv_yeo@xxxxxxxxxxx a écrit :
>  John,
>
> I tried that. Upon insmod, I still see warning of:
>
> Unknown symbol __up
> Unknown symbol __down_interruptible
>
> And so insmod fails.
>
> The strange thing is in /proc/kallsyms, I can see the symbol of:
> 24xxxxxx T __down_interruptible
> 24xxxxxx T __up
>
> Is the dynamic linking failing here?
>
> Rgds,
> Victor
>  Yeo
>
> -----Original Message-----
> From: owner-microblaze-uclinux@xxxxxxxxxxxxxx [mailto:owner-microblaze-uclinux@xxxxxxxxxxxxxx] On Behalf Of John Williams
> Sent: Wednesday, February 27, 2008 11:18 AM
> To: microblaze-uclinux@xxxxxxxxxxxxxx
> Subject: Re: [microblaze-uclinux] undefined __down_interruptible and __up
>
> Hi Viictor,
>
> victor-sv_yeo@xxxxxxxxxxx wrote:
>
> > I have a device driver, I compiled the driver on petalinux-v0.30-rc1. 
> > The device driver declares a semaphore using:
> > 
> > MODPOST 1 modules
> > 
> > WARNING: "__up" [....../scull.ko] undefined!
> > 
> > WARNING: "__down_interruptible" [....../scull.ko] undefined!
>
> Can you please add
>
> EXPORT_SYMBOL(__down_interruptible);
> EXPORT_SYMBOL(__up);
>
> to linux-2.6.x/arch/microblaze/kernel/semaphore.c
>
> and report if it solves the problem?
>
> Thanks,
>
> John
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>
>
>
>
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