Messages in this thread | | | Date | Sat, 2 Jun 2001 22:29:21 +0200 (CEST) | From | Adrian Bunk <> | Subject | Re: Inconsistent "#ifdef __KERNEL__" on different architectures |
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On Wed, 30 May 2001, Ralf Baechle wrote:
> > This is no good. The ARM kernel just doesn't provide any atomic primitives > > that will work in user space. If you want atomicity you have to use > > libpthread. > > Similar on some MIPS processors where the kernel has to implement atomic > operations because there is no practical possibility to implement them > in userspace.
Thanks for the answer, this means: It is specific to the arm, mips, mips64 and sparc ports that atomic_read, atomic_inc and atomic_dec won't work in user space and they do work on all other architectures.
(my main concern wasn't whether the "#ifdef __KERNEL__" is correct or not but I was wondering whether there's a reason why it's different on different architectures)
> Ralf
cu Adrian
-- A "No" uttered from deepest conviction is better and greater than a "Yes" merely uttered to please, or what is worse, to avoid trouble. -- Mahatma Ghandi
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