From: Pavel Machek <pavel@suse.cz>
To: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Andrew Morton <akpm@linux-foundation.org>,
ACPI Devel Maling List <linux-acpi@vger.kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
pm list <linux-pm@lists.linux-foundation.org>,
Tejun Heo <tj@kernel.org>, Zhang Rui <rui.zhang@intel.com>,
Jeff Garzik <jeff@garzik.org>
Subject: Re: [PATCH -mm 2/8] AHCI: Speed-up resume
Date: Thu, 10 Jul 2008 13:34:20 +0200 [thread overview]
Message-ID: <20080710113420.GB15412@elf.ucw.cz> (raw)
In-Reply-To: <200807100158.49341.rjw@sisk.pl>
On Thu 2008-07-10 01:58:48, Rafael J. Wysocki wrote:
> From: Zhang Rui <rui.zhang@intel.com>
> Subject: AHCI: Speed-up resume
>
> During resume, sleep 1 second to wait for the HBA reset
> to finish is a waste of time.
>
> According to the AHCI 1.2 spec,
> We should poll the HOST_CTL register,
> and return error if the host reset is not
> finished within 1 second.
>
> Test results show that the HBA reset can be done quickly(in usecs).
> And this patch may save nearly 1 second during resume.
>
> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
> Acked-by: Tejun Heo <tj@kernel.org>
> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
ACK.
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
next prev parent reply other threads:[~2008-07-10 15:03 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-09 23:52 [PATCH -mm 0/8] PM patches for 2.6.27 Rafael J. Wysocki
2008-07-09 23:55 ` [PATCH -mm 1/8] PM: Add new PM_EVENT codes for runtime power transitions Rafael J. Wysocki
2008-07-10 11:34 ` Pavel Machek
2008-07-09 23:58 ` [PATCH -mm 2/8] AHCI: Speed-up resume Rafael J. Wysocki
2008-07-10 11:34 ` Pavel Machek [this message]
2008-07-10 0:00 ` [PATCH -mm 3/8] Hibernation: Simplify memory bitmap Rafael J. Wysocki
2008-07-10 11:34 ` Pavel Machek
2008-07-10 0:01 ` [PATCH -mm 4/8] serio: Speed-up resume Rafael J. Wysocki
2008-07-10 11:35 ` Pavel Machek
2008-07-10 15:11 ` Dmitry Torokhov
2008-07-10 0:03 ` [PATCH -mm 5/8] Introduce new interface schedule_work_on Rafael J. Wysocki
2008-07-10 11:36 ` Pavel Machek
2008-07-10 0:04 ` [PATCH -mm 6/8] Schedule sysrq poweroff on boot cpu Rafael J. Wysocki
2008-07-10 11:36 ` Pavel Machek
2008-07-10 0:05 ` [PATCH -mm 7/8] ACPI hibernation: Utilize hardware signature Rafael J. Wysocki
2008-07-10 8:34 ` Pavel Machek
2008-07-10 0:07 ` [PATCH -mm 8/8] ACPI PM: Add DMI quirk list for ACPI 1.0 suspend ordering Rafael J. Wysocki
2008-07-10 11:37 ` Pavel Machek
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20080710113420.GB15412@elf.ucw.cz \
--to=pavel@suse.cz \
--cc=akpm@linux-foundation.org \
--cc=jeff@garzik.org \
--cc=linux-acpi@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pm@lists.linux-foundation.org \
--cc=rjw@sisk.pl \
--cc=rui.zhang@intel.com \
--cc=tj@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox