Re: how to use errno in kernel loadable modules

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Hi,

On 12/30/05, Tetsuo Handa <from-kernelnewbies@xxxxxxxxxxxxxxxxxxx> wrote:
> Hi,
>
> kishore wrote:
> >     I am using kmalloc in my module. It returned NULL; by that i understood
> > there may be some scarcity in allocating the requested amount of memory ( i
> > requested for 64 bytes). I returned -ENOMEM, but i thought there may be some
> > way to return error number rather than what am using.
> The kmalloc() can allocate up to 128 Kilo Bytes.
> Allocation for only 64 Bytes SHOULD NOT FAIL!
> I doubt you passed wrong parameters to kmalloc().
>
     I think you have to use kmalloc(64,GFP_ATOMIC) then u will not
get any memory allocation error.
> Are you using "kmalloc(64, GFP_KERNEL)" ?
> Are you using "kfree()" after you finished using memory
> allocated by kmalloc()?
>
Regards,
Parag.

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