From: Dan Williams Date: Sat, 30 Jul 2011 00:17:10 +0000 (-0700) Subject: [SCSI] isci: dynamic interrupt coalescing X-Git-Tag: v3.1-rc7~62^2~18 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9b4be528999483d70a1ffc0accd102e477d5a503;p=pandora-kernel.git [SCSI] isci: dynamic interrupt coalescing Hardware allows both an outstanding number commands and a timeout value (whichever occurs first) as a gate to the next interrupt generation. This scheme at completion time looks at the remaining number of outstanding tasks and sets the timeout to maximize small transaction operation. If transactions are large (take more than a few 10s of microseconds to complete) then performance is not interrupt processing bound, so the small timeouts this scheme generates are overridden by the time it takes for a completion to arrive. Tested-by: Dave Jiang Signed-off-by: Dan Williams Signed-off-by: James Bottomley --- Reading git-diff-tree failed