Messages in this thread | | | From | "Moore, Eric Dean" <> | Subject | [PATCH] - Fusion-MPT much faster as module | Date | Tue, 22 Mar 2005 11:40:54 -0700 |
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Here is a patch for mpt fusion drivers, which fix's issue of poor performance when driver compiled built-in to the kernel.
Thanks to Chen, Kenneth W.
History on this: Between the 3.01.16 and 3.01.18, we introduced new method to passing command line options to the driver. Some of the command line options are used for fine tuning dv(domain validation) in the driver. By accident, these command line options were wrapped around #ifdef MODULE in the 3.01.18 version of the driver. What this meant is when the driver is compiled built-in the kernel, the optimal settings for dv were ignored, thus poor performance.
There was actually a fix for this when I submitted SAS drivers to the mailing list back in November, however the SAS drivers was rejected, and later on I overlooked submitting a single patch to solve this.
Please apply this patch against the 3.01.19 version of the mpt driver in http://linux-scsi.bkbits.net:8080/scsi-misc-2.6
Signed-off-by: Eric Moore <Eric.Moore@lsil.com>
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