sata_nv: Use notifier for completion checks

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The hardware provides us a notifier register that indicates what command
tags have completed. Use this to determine which CPBs to check, rather
than blindly checking all active CPBs. This should provide a minor
performance win, since if the controller has touched some of these
incomplete CPBs, accessing them will likely result in a cache miss.

Signed-off-by: Robert Hancock <hancockr@shaw.ca>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

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Robert Hancock 2007-02-19 19:03:08 -06:00 • committed by Jeff Garzik

parent ac3d6b869f

commit 721449bf0d

1 changed files with 7 additions and 15 deletions

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drivers/ata/sata_nv.c

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