RE: globals in modules

["Nilanjan Roychowdhury" <Nilanjan.Roychowdhury@xxxxxxxx>]

I am using 2.4.20 kernel on MIPS.
-Nilanjan

-----Original Message-----
From: Srinivas G. [mailto:srinivasg@xxxxxxxxxxxxxxxxxxxxx] 
Sent: Wednesday, May 03, 2006 11:31 AM
To: Nilanjan Roychowdhury; kernelnewbies
Subject: RE: globals in modules


> I am facing a problem
> 
> In my source file I have something like this when I insert the module
I
> see all the values printed as 0xFFFF but when I remove one element
from
> the structure lets say c then I get correct result. Or when I add one
> element to the ctructure lets say d I get correct result. I mean when
> the size of the structre becomes 4,8,,16 I get right results. Whats
> wrong ??
> 
> 
> typedef struct {
> 	unsigned int a;
> 	unsigned int b;
> 	unsigned int c;
> 
> }my_struct;
> my_struct  my_array[4];
> 
> int __init init_module(void)
> {
> int i =0;
> for ( i=0; i< 4; i++)
> {
> my_array [i].a = i;
> my_array [i].b = i + 10;
> my_array [i].c = i + 20;
> }
> for ( i=0; i< 4; i++)
> {
> printk(" a = 0x%x,b = 0x%x, c = 0x%x\n", my_array [i].a, my_array
> [i].b,my_array [i].c); }
> }

Dear Nil,

There is nothing wrong in the code. I have tested the above code on my
FC3 system. It is working fine. 

Coming to the size restrictions, the compiler allocates the sizes for
the structures in the multiple of 4 always. If you have the structure
like 

struct size_test 
{
	int a;
	char b;
}abc;

If you print the size of the above structure variable (abc) it shows you
8.

Bye the bye, what version of kernel is you using?

Thanks and Regards,
Srinivas G

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