On Wed, Nov 15 2006, Marek Podmaka wrote: > Hello, > > I have server with Intel 5000V motherboard with integrated AHCI SATA > controller. It works well with kernel 2.6.18.2. But I have problem > with little entropy available and I'm not sure if one of the reasons > is that AHCI driver does not use add_disk_randomness() to contribute > to the kernel entropy pool. > > I'm not very skilled on kernel "hacking"... I tried finding where > this is called (it's defined in drivers/char/random.c and used for > example in Comapaq SmartArray driver in drivers/block/cciss.c). For > the SCSI part, I found it in scsi_lib.c, but I was not able to > determine if this is actually used by ahci/libata drivers. > > If not, would it be possible to implement it? I tried to figure out > where to call it by looking at cciss.c, but it seems that this is > totally different case, at least for me. I don't know where to add > it, because its parameter is struct gendisk *disk and didn't find it > used anywhere in ahci or libata. Since ahci attaches its devices through the scsi layer, add_disk_randomness() will get called from scsi_end_request() like for any other scsi controller. -- Jens Axboe - To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
