Re: [patch] i386: use C code for current_thread_info()

[Linus Torvalds]

On Sun, 11 Jun 2006, Chuck Ebbert wrote:
>
> Using C code for current_thread_info() lets the compiler optimize it.

Ok, me likee. I just worry that this might break some older gcc version. 
Have you checked with gcc-3.2 or something?

We've had that "current_stack_pointer" thing for a long while, but we only 
use it in the irq-stack path (where it's really very incidental: the whole 
use of the "previous_esp" thing is only for the oops tracing. Maybe there 
was some reason (like gcc generating bad code) for not using it earlier?

(Admittedly, a more likely reason is probably just nobody looking at it, 
but it sounds like we should check it out anyway, just in case)

		Linus
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