Re: Average number of instructions per line of kernel code

On 30/08/2007, Mohamed Bamakhrama [off-list ref] wrote:

On 8/30/07, Jesper Juhl [off-list ref] wrote:

quoted

On 30/08/2007, Mohamed Bamakhrama [off-list ref] wrote:

quoted

Hi all,
I have a question regarding the average number of assembly
instructions per line of kernel code. I know that this is a difficult
question since it depends on many factors such as the instruction set
architecture, compiler used, optimizations used, type of code, coding
style, etc...
I would like to know a rough estimate for such a quantity for the
kernel 2.4/2.6 code running on MIPS32 architecture.
My estimate is between 5-10 instructions. I googled for such a thing
but couldn't find any useful papers/resources.

Why don't you simply count the number of non-blank non-comment lines
in the source files that you are building, build the kernel and then
count the number of instructions in the resulting binary ?

Hi,
I agree with you but is there any way to include ALL the drivers in
the kernel tree in building the image? Otherwise, I will be counting
un-used lines.

make allyesconfig
make


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Jesper Juhl [off-list ref]
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