Hello Jan. Dne petek 28. februar 2003 11:41 je Jan Hudec napisal(a): > On Fri, Feb 28, 2003 at 12:29:54AM +0100, Rok Papež wrote: > YES, IT DOES. Except _irqsave/_irqrestore variants (they reduce to > cli/sti). And for 2.4, that is. With preempt patched (IIRC they are > included in late 2.5) they become magic. :-). I had _irqsave/_irqrestore in mind. > > I use them on UP as mutexes.. heavily. You use spinlock if structures you > > are protecting are being accessed from interrupt/timer/softirq context. > > Only _irqsave/_irqrestore variants! Unsing the normal variant to lock > against interrupt is a bug under penalty of complete machine freeze. Yes. -- best regards, Rok Papež. -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
