From: Huang Ying <ying.huang@intel.com>
To: Alan Stern <stern@rowland.harvard.edu>
Cc: ming.m.lin@intel.com, linux-kernel@vger.kernel.org,
linux-scsi@vger.kernel.org, linux-pm@vger.kernel.org,
"Rafael J. Wysocki" <rjw@sisk.pl>,
James Bottomley <JBottomley@parallels.com>,
Huang Ying <ying.huang@intel.com>
Subject: [RFC 0/5] scsi, sd, pm, request based runtime PM for scsi disk
Date: Mon, 6 Feb 2012 15:32:23 +0800 [thread overview]
Message-ID: <1328513548-19786-1-git-send-email-ying.huang@intel.com> (raw)
SSD becomes more and more popular, this makes it possible to put disk into
low power state more often. And request based runtime PM for scsi disk is
more useful than open/close based one because disk is normally mounted at
most time.
One known issue, because SCSI TEST_UNIT_READY will be put into request
queue every 2 seconds by default, this makes it hard for disk to sleep.
Maybe we can implement check_events callback in some other way?
[RFC 1/5] pm, runtime, Add resume notifier
[RFC 2/5] scsi, pm, rename scsi_autopm_get/put_xxx to
[RFC 3/5] scsi, pm, add pm_runtime_get/put in scsi request
[RFC 4/5] scsi, pm, use autosuspend for scsi runtime PM
[RFC 5/5] scsi, sd, pm, request based runtime PM support
Best Regards,
Huang Ying
next reply other threads:[~2012-02-06 7:32 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-06 7:32 Huang Ying [this message]
2012-02-06 7:32 ` [RFC 1/5] pm, runtime, Add resume notifier Huang Ying
2012-02-06 7:32 ` [RFC 2/5] scsi, pm, rename scsi_autopm_get/put_xxx to scsi_autopm_get/put_xxx_sync Huang Ying
2012-02-06 7:32 ` [RFC 3/5] scsi, pm, add pm_runtime_get/put in scsi request function Huang Ying
2012-02-06 7:32 ` [RFC 4/5] scsi, pm, use autosuspend for scsi runtime PM Huang Ying
2012-02-06 7:32 ` [RFC 5/5] scsi, sd, pm, request based runtime PM support Huang Ying
2012-02-06 15:13 ` [RFC 0/5] scsi, sd, pm, request based runtime PM for scsi disk Alan Stern
2012-02-07 4:59 ` Huang Ying
2012-02-11 19:37 ` Oliver Neukum
2012-02-12 18:05 ` Alan Stern
2012-02-12 20:00 ` Oliver Neukum
2012-02-13 1:42 ` Alan Stern
2012-02-13 9:28 ` Oliver Neukum
2012-02-13 15:20 ` Alan Stern
2012-02-18 20:44 ` Alan Stern
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