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From: Marek Podmaka <marki@marki-online.net>
To: jgarzik@pobox.com
Cc: linux-ide@vger.kernel.org
Subject: AHCI and add_disk_randomness()
Date: Wed, 15 Nov 2006 22:01:30 +0100	[thread overview]
Message-ID: <1124564609.20061115220130@marki-online.net> (raw)

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.

-- 
  bYE, Marki



             reply	other threads:[~2006-11-15 21:01 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-11-15 21:01 Marek Podmaka [this message]
2006-11-16 12:40 ` AHCI and add_disk_randomness() Jens Axboe
2006-11-20  2:35 ` Tejun Heo

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