Re: Slow loading big kernel module in 2.6 on PPC platform

[Wilson Li]

I think I got what you are trying to do in your patch. This is really
a smart workaround. At least it works for me for now, it just need
the module to be loaded first to generate all the infos which takes
time. And then use the infos pre-calculated to load the module just
like
#>insmod mrbig.ko elf_plt_info=25,27,322144,160

Thanks and really appreciate your help.
Wilson Li 

--- Wilson Li <yongshenglee@xxxxxxxxx> wrote:

> 
> 
> --- Samuel Masham <Samuel.Masham@xxxxxxxxxxx> wrote:
> 
> > I assume you are on a slow ppc32 platform.
> > 
> > The time taken is a function of the number of symbols, you can
> work
> > around it 
> > as shown in the patch below. Obviously this is just an example
> > patch and is
> > NOT signed off for anything but reading :)
> > 
> > I would really like do some work on a pre-link for modules but
> > don't really know 
> > where to start.
> > 
> > Any hints?
> > 
> > Samuel
> > 
> > ps Not subscribed, just  so please cc me
> > 
> 
> Appreciate your help. 
> I applied your patch manually since something was wrong during
> patching. I guess we might not use same version of kernel. Mine is
> 2.6.8. 
> 
> But the function parse_args_reloc() still failed even though I have
> passed a module param like elf_plt_info=1 during insmod. Here's the
> command to load the module.
> 
> #>insmod mrbig.ko elf_plt_info=1
> 
> And console output is: 
> init_module: consider insmod mrbig elf_plt_info=25,27,322144,160
> 
> I have no idea what the plt section is and what is going on in
> module_frob_arch_sections() function. Any hints or documents I can
> refer to?
> 
> Thanks,
> Wilson Li
> 
> 
> 
> 
> 		
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