Messages in this thread | | | Date | Thu, 24 Dec 1998 01:16:31 -0800 | From | Graffiti <> | Subject | Re: m68k softirq.h fix |
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On Thu, Dec 24, 1998 at 12:31:00AM +0200, Matti Aarnio wrote: [snip] > > -- DN (No, I still have no idea what I'm doing. But it compiles! <g>) > > Sure it does compile, but it is wrong. > See model from AC's patches: > > ftp://ftp.uk.linux.org/pub/linux/alan/2.1/patch-2.1.132-ac2.bz2
Ah. Thanks.
> see 'softirq.h' files in it. > For the idea WHY your code is wrong, see Alpha's definitions > for atomic_inc(), and friends. You must not go setting, > or (heaven forbid), blindly ++:ing fields in there!
I'm still confused. Is there any documentation/book/webpage/gopher hole/etc that I can read for this? In particular, what exactly is non-atomic about ++/--?
-- DN (Confused, but learning, ala Farenheit 451 ;-) -- -----BEGIN GEEK CODE BLOCK----- Version: 3.1 GCS d- s--:+ a-->? C++(---) UL++++ US+++$ P- L+++ !E W-- N+++ !w M++$ V?>+++ PS--- PE++ t--(*) 5+ X+ R+(*) tv-- b+ DI+++ D--- G? e>++++ h* r++>+++ z+>++++ ------END GEEK CODE BLOCK------
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