Bogus interrupts: test fix

[Albrecht Dreß]

Benjamin Herrenschmidt wrote:
> 
> I've updated the 2.2-pre4 test kernel on my web page, it contains a test
> fix for the bogus interrupt problem. Please try it and give me feedback.

Really good! The improvement of ide performance is impressive. The slowdown
effect has gone during ide _reads_ [= almost "normal" response times compared to
Intel/Linux systems], but is still present during ide _writes_ (I tested it with
a program which writes or reads 200 MB with simple read/write calls, so I have
enough time for a login on a 2nd console). BTW, the read transfer speed given by
hdparm (PB G3/300, IBM DYLA 28100) is 7.08 MB/s.

The bogus interrupts are gone _completely_; still 0 after ~1 hour with a lot of
io. LST interrupts are == 1 (one) after the same time.

Yours, and THANKS for your work,

	Albrecht.

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| Dr.-Ing. Albrecht Dre\3                                      ----           |
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