Re: what does a number of "_" mean?

[Shinpei Kato <shinny@j02.itscom.net>]

In short, a function with "__" is a kind of raw function, isnt it?
Thank you for your description. With this, I'd come to learn the kernel
more easily.

Thanks,
Shinpei Kato.

On Mon, 03 Nov 2003 11:53:22 -0500
Robert Love <rml@tech9.net> wrote:

> > On Mon, 2003-11-03 at 08:17, Shinpei Kato wrote:
> 
> > How about types or variables and functions beggining with one "_"
> > as _exit()?
> 
> Underscores tend to denote internal functions, or ones with a
> corresponding functions that are of a "higher level".
> 
> There is not any official difference between one and two underscore
> proceeded functions, but I guess two underscore functions would tend to
> be "more internal" than one underscore functions.
> 
> For example, consider foo() and __foo().  foo() might obtain requisite
> locks and then call __foo().  The standard interface would be foo(), but
> you could call __foo() if you knew you already held the locks or
> whatever.
> 
> In the case of the _exit_*() functions, those are internal helper
> functions called by do_exit().
> 
> 	Robert Love
> 
> 
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