On Sun, May 27, 2001 at 11:10:00PM +0100, Philip Blundell wrote:
> >--- include/asm-arm/atomic.h.old Sun May 27 22:30:58 2001
> >+++ include/asm-arm/atomic.h Sun May 27 22:58:20 2001
> >@@ -12,6 +12,7 @@
> > * 13-04-1997 RMK Made functions atomic!
> > * 07-12-1997 RMK Upgraded for v2.1.
> > * 26-08-1998 PJB Added #ifdef __KERNEL__
> >+ * 27-05-2001 APB Removed #ifdef __KERNEL__
> > */
> > #ifndef __ASM_ARM_ATOMIC_H
> > #define __ASM_ARM_ATOMIC_H
> >@@ -30,7 +31,6 @@
>
> 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.
Ralf
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