On Mon, Jan 14, 2013 at 6:02 AM, horseriver <horserivers@gmail.com> wrote:

On Mon, Jan 14, 2013 at 02:44:11PM +0000, Anuz Pratap Singh Tomar wrote:

...

On Mon, Jan 14, 2013 at 4:50 AM, horseriver <horserivers@gmail.com> wrote:

...

On Sun, Jan 13, 2013 at 09:27:45PM -0800, Dave Hylands wrote:

...

Hi,

On Sun, Jan 13, 2013 at 11:29 AM, horseriver <horserivers@gmail.com> wrote:

...

hi:

In kernel code . some function is defined by

__attribute__((__section__(".initcall" level ".init")))

...

what does this do ?

It puts the address of the function in a linker section named .initcallX.init where X is replaced by the level.

These functions are called in order to initialize various subsystems and drivers during kernel bootup.

Thanks!

Another question:

__attribute__((regparm(3))) ; what does this do ?

A simple google search should have answered this http://ohse.de/uwe/articles/gcc-attributes.html

Synopsis

regparm (NUMBER) Found in versions: 2.7-3.4 Description:

Functions that take a variable number of arguments will continue to be passed all of their arguments on the stack.

what does this mean?

May be you should really read more. I would suggest reading some i386 assembly. Thank you Warm Regards Anuz