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SubjectRE: Re: [PATCH] removal of unnecessary irq save/restore in tasklet_hi_schedule


On Mon, 31 Jul 2000 pavel-velo@bug.ucw.cz wrote:
>
> >That said, SA_INTERRUPT still works, but it's really only meant to be used
> >for the timer handler (you don't want the timer to be interruptible: it's
> >fast, and at least the SCSI layer historically wanted the timer to tick
> >_while_ a SCSI interrupt is active, so you must not have a SCSI interrupt
> >interrupt the timer, because if that happens..)
>
> I think this ScsI uglyness is gone these days... I converted seagate.c
> to use delay loops because now SCSI calls driver with interrupts
> disabled...

You're probably right: some of the SCSI stuff was cleaned up in order to
make room for the io_request_lock etc, and that didn't allow some of the
uglier things people had done in the past.

However, for now we'll just leave SA_INTERRUPT deprecated and hopefully
make people aware of the fact that they shouldn't play with it.

Linus


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