Re: Today Linus redesigns the networking driver interface (was Re:

Geert Uytterhoeven (Geert.Uytterhoeven@cs.kuleuven.ac.be)
Sun, 20 Sep 1998 12:13:57 +0200 (CEST)

On Sun, 20 Sep 1998, Alan Cox wrote:
> > The whole notion of "interrupt priority" is just completely broken. There
> > is no such thing.
>
> On a PC.

> Almost every cli in the kernel is in fact really
>
> block_interrupt(dev->irq)
> something
> unblock_interrupt(dev->irq)
>
> Where dev->irq is the device irq.

#ifdef __i386__
#define block_interrupt(irq) save_flags(flags); cli();
#define unblock_interrupt(irq) restore_flags();
#else
#define block_interrupt(irq) sane_block_interrupt(irq);
#define unblock_interrupt(irq) sane_unblock_interrupt(irq);
#endif

Greetings,

Geert

--
Geert Uytterhoeven                     Geert.Uytterhoeven@cs.kuleuven.ac.be
Wavelets, Linux/{m68k~Amiga,PPC~CHRP}  http://www.cs.kuleuven.ac.be/~geert/
Department of Computer Science -- Katholieke Universiteit Leuven -- Belgium




-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/