[Click] kernel mode - 2.6.24.7

[Mythili]

I  don't mean a click file. I meant any simple kernel module with the same
arithmetic doesn't throw any errors and am able to add the module to the
kernel. And I did check about the click element .. the one I was looking at
is indeed for userlevel.

Thank you for the link on the floating point arithmetic usage in kernel.

Mythili


On 15 March 2010 11:56, Ian Rose <ianrose at eecs.harvard.edu> wrote:

> What do you mean by "any other file with floating point arithmetic"? Are
> you talking about click code specifically?  If so, I think you'll find that
> there is no kernel-mode floating point in click.  If you are seeing floating
> point code its probably inside a '#ifdef CLICK_USERLEVEL' block.
>
> - Ian
>
>
>
> Mythili wrote:
>
>> But how is it that any other file with floating point arithmetic works
>> fine
>> and can be loaded as a kernel module? I am not sure if I get what you are
>> saying.
>>
>> Mythili
>>
>>
>> On 15 March 2010 11:23, adam.greenhalgh at googlemail.com <
>> a.greenhalgh at cs.ucl.ac.uk> wrote:
>>
>>  I didn't think the kernel supported floating point arithmetic. I could be
>>> wrong , but its difficult to look things up from a commuter train.
>>>
>>> Adam
>>>
>>> -original message-
>>> Subject: [Click] kernel mode - 2.6.24.7
>>> From: "Mythili" <msmythili at gmail.com>
>>> Date: 15/03/2010 6:15 pm
>>>
>>> Hi
>>>   I am running click on linux 2.6.24.7 (source from kernel.org). The
>>> kernel has been patched successfully with the latest version of click. I
>>> am
>>> able to run click in the kernel mode. I need to run some floating point
>>> arithmetic in a new element. I see multiple errors when I run make
>>> install.
>>> And of course insmod fails as there are undefined symbols in the .ko
>>> files
>>> created by the make install command.
>>>
>>> WARNING: "__mulsf3" [/home/live/Desktop/click-1.8.0/linuxmodule/click.ko]
>>> undefined!
>>> WARNING: "__floatsisf"
>>> [/home/live/Desktop/click-1.8.0/linuxmodule/click.ko]
>>> undefined!
>>> WARNING: "__subsf3" [/home/live/Desktop/click-1.8.0/linuxmodule/click.ko]
>>> undefined!
>>> WARNING: "__divsf3" [/home/live/Desktop/click-1.8.0/linuxmodule/click.ko]
>>> undefined!
>>>
>>> I am able to run click in the usermode. I also tried using the same
>>> arithmetic in a c file and loading it as a kernel module. There are no
>>> errors.
>>>
>>> So my guess is that click needs to be configured with some specific
>>> flags/options to fix this. I currently tried with no flags as
>>> /usr/src/linux
>>> points to the correct source directory. ( I am a little unsure about how
>>> grid elements don't cause this error as floating point numbers are used
>>> there). I would really appreciate any help on this.
>>>
>>> Regards
>>> Mythili
>>> _______________________________________________
>>> click mailing list
>>> click at amsterdam.lcs.mit.edu
>>> https://amsterdam.lcs.mit.edu/mailman/listinfo/click
>>>
>>>
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>