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| author | Stephen M. Cameron <scameron@beardog.cce.hp.com> | 2011-01-06 14:48:29 -0600 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2011-01-24 11:30:43 -0600 |
| commit | 02ec19c82e87e3748d326ca5e15e7ddb18c73476 (patch) | |
| tree | bec075bdfbe16a1ca5cc4df9ada03ef9a14a01b5 /Documentation/scsi | |
| parent | 6eaf46fdc719991a3ccda1e14b274e9adb515978 (diff) | |
| download | op-kernel-dev-02ec19c82e87e3748d326ca5e15e7ddb18c73476.zip op-kernel-dev-02ec19c82e87e3748d326ca5e15e7ddb18c73476.tar.gz | |
[SCSI] hpsa: allow driver to put controller in either simple or performant mode
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'Documentation/scsi')
| -rw-r--r-- | Documentation/scsi/hpsa.txt | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/scsi/hpsa.txt b/Documentation/scsi/hpsa.txt index dca6583..b14e6ee 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 ----------------------------- |
