From 02ec19c82e87e3748d326ca5e15e7ddb18c73476 Mon Sep 17 00:00:00 2001 From: "Stephen M. Cameron" Date: Thu, 6 Jan 2011 14:48:29 -0600 Subject: [SCSI] hpsa: allow driver to put controller in either simple or performant mode Signed-off-by: Stephen M. Cameron Signed-off-by: James Bottomley --- Documentation/scsi/hpsa.txt | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'Documentation/scsi') diff --git a/Documentation/scsi/hpsa.txt b/Documentation/scsi/hpsa.txt index dca658362cbf..b14e6ee00a95 100644 --- a/Documentation/scsi/hpsa.txt +++ b/Documentation/scsi/hpsa.txt @@ -28,6 +28,12 @@ boot parameter "hpsa_allow_any=1" is specified, however these are not tested nor supported by HP with this driver. For older Smart Arrays, the cciss driver should still be used. +The "hpsa_simple_mode=1" boot parameter may be used to prevent the driver from +putting the controller into "performant" mode. The difference is that with simple +mode, each command completion requires an interrupt, while with "performant mode" +(the default, and ordinarily better performing) it is possible to have multiple +command completions indicated by a single interrupt. + HPSA specific entries in /sys ----------------------------- -- cgit v1.2.3