Re: [patch 3/8] mutex subsystem, add atomic_*_call_if_*() to i386

[Ingo Molnar]

* Linus Torvalds <torvalds@xxxxxxxx> wrote:

> 
> On Wed, 21 Dec 2005, Ingo Molnar wrote:
> >
> > add two new atomic ops to i386: atomic_dec_call_if_negative() and
> > atomic_inc_call_if_nonpositive(), which are conditional-call-if
> > atomic operations. Needed by the new mutex code.
> 
> Umm. This asm is broken. It doesn't mark %eax as changed, [...]

hm, i thought gcc treats all explicitly used register in the asm as 
clobbered - and i'm using %%eax explicitly for that reason. Or is that 
only the case if that's an input/output register as well?

	Ingo
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