From: "Rafael J. Wysocki" <rjw@sisk.pl>
To: Pavel Machek <pavel@ucw.cz>
Cc: "linux-pm" <linux-pm@lists.linux-foundation.org>,
"linux-acpi" <linux-acpi@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Zhang Rui <rui.zhang@intel.com>, Len Brown <lenb@kernel.org>,
Alan Stern <stern@rowland.harvard.edu>,
Arjan van de Ven <arjan@linux.intel.com>
Subject: Re: [RFC][PATCH 1/3] PM: Asynchronous resume of devices
Date: Sat, 22 Aug 2009 23:45:24 +0200 [thread overview]
Message-ID: <200908222345.24834.rjw@sisk.pl> (raw)
In-Reply-To: <20090822092429.GC11448@elf.ucw.cz>
On Saturday 22 August 2009, Pavel Machek wrote:
> Hi!
>
> > > Do we really need async for noirq handlers?
> >
> > Yes, we do. Specifically, for PCI.
>
> Do noirq parts of PCI handling really so long that we need to make
> them async?
I think so. It may get 10 ms to handle a PCI device at this stage usually
and this is all waiting. If you multiply that by the number of PCI devices ...
> Async in normal paths looks pretty much okay to me, but in noirq
> parts, locking is tricky, etc...
The locking is actually simpler in that case.
Thanks,
Rafael
next prev parent reply other threads:[~2009-08-22 21:44 UTC|newest]
Thread overview: 71+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-08-12 20:18 [RFC][PATCH 0/3] PM: Asynchronous suspend and resume Rafael J. Wysocki
2009-08-12 20:20 ` [RFC][PATCH 1/3] PM: Asynchronous resume of devices Rafael J. Wysocki
2009-08-14 16:33 ` Pavel Machek
2009-08-15 20:59 ` Rafael J. Wysocki
2009-08-22 9:24 ` Pavel Machek
2009-08-22 21:45 ` Rafael J. Wysocki [this message]
2009-08-12 20:21 ` [RFC][PATCH 2/3] PM: Asynchronous suspend " Rafael J. Wysocki
2009-08-14 16:35 ` Pavel Machek
2009-08-15 21:04 ` Rafael J. Wysocki
2009-08-22 9:25 ` Pavel Machek
2009-08-22 21:46 ` Rafael J. Wysocki
2009-08-12 20:22 ` [RFC][PATCH 3/3] PM: Asynchronous suspend and resume for ACPI battery Rafael J. Wysocki
2009-08-12 21:12 ` [RFC][PATCH 0/3] PM: Asynchronous suspend and resume Alan Stern
2009-08-12 21:43 ` Rafael J. Wysocki
2009-08-13 8:18 ` Zhang Rui
2009-08-13 18:08 ` Rafael J. Wysocki
2009-08-14 3:24 ` Zhang Rui
2009-08-14 11:58 ` Rafael J. Wysocki
2009-08-13 14:45 ` Alan Stern
2009-08-13 18:28 ` Rafael J. Wysocki
2009-08-13 18:39 ` Alan Stern
2009-08-13 21:10 ` Rafael J. Wysocki
2009-08-13 21:53 ` Rafael J. Wysocki
2009-08-14 14:45 ` Alan Stern
2009-08-14 19:12 ` Rafael J. Wysocki
2009-08-14 21:21 ` Alan Stern
2009-08-14 21:31 ` Rafael J. Wysocki
2009-08-14 21:37 ` Alan Stern
2009-08-16 10:29 ` [linux-pm] " Rafael J. Wysocki
2009-08-14 16:33 ` Pavel Machek
2009-08-15 21:00 ` Rafael J. Wysocki
2009-08-17 0:15 ` [RFC][PATCH 0/7] PM: Asynchronous suspend and resume (updated) Rafael J. Wysocki
2009-08-17 0:16 ` [RFC][PATCH 1/7] PM: Update kerneldoc comments in drivers/base/power/main.c Rafael J. Wysocki
2009-08-19 21:57 ` Rafael J. Wysocki
2009-08-19 22:00 ` Randy Dunlap
2009-08-19 22:06 ` Greg KH
2009-08-19 22:28 ` Alan Stern
2009-08-19 23:14 ` Rafael J. Wysocki
2009-08-20 14:00 ` Alan Stern
2009-08-26 15:44 ` Pavel Machek
2009-08-17 0:17 ` [RFC][PATCH 2/7] PM: Framework for representing PM links between devices Rafael J. Wysocki
2009-08-21 22:27 ` [RFC][PATCH 2/7 update] " Rafael J. Wysocki
2009-08-17 0:18 ` [RFC][PATCH 3/7] PM: Asynchronous resume of I/O devices Rafael J. Wysocki
2009-08-23 22:09 ` [RFC][PATCH 3/7 updated] " Rafael J. Wysocki
2009-08-17 0:19 ` [RFC][PATCH 4/7] PM: Asynchronous suspend " Rafael J. Wysocki
2009-08-17 0:20 ` [RFC][PATCH 5/7] PM: Asynchronous suspend and resume of PCI devices Rafael J. Wysocki
2009-08-18 6:57 ` Zhang Rui
2009-08-18 13:47 ` Alan Stern
2009-08-17 0:20 ` [RFC][PATCH 6/7] PM: Asynchronous suspend and resume of ACPI devices Rafael J. Wysocki
2009-08-17 0:21 ` [RFC][PATCH 7/7] PM: Asynchronous suspend and resume of i8042 Rafael J. Wysocki
2009-08-18 7:03 ` Zhang Rui
2009-08-18 19:57 ` Rafael J. Wysocki
2009-08-18 23:40 ` Rafael J. Wysocki
2009-08-26 15:43 ` Pavel Machek
2009-08-18 1:59 ` [RFC][PATCH 0/7] PM: Asynchronous suspend and resume (updated) Zhang Rui
2009-08-18 7:16 ` Zhang Rui
2009-08-18 20:01 ` Rafael J. Wysocki
2009-08-18 23:58 ` Rafael J. Wysocki
2009-08-19 1:05 ` Zhang Rui
2009-08-19 21:02 ` Rafael J. Wysocki
2009-08-21 7:40 ` Zhang Rui
2009-08-26 15:44 ` Pavel Machek
2009-08-18 14:04 ` Alan Stern
2009-08-18 19:56 ` Rafael J. Wysocki
2009-08-18 20:22 ` Alan Stern
2009-08-18 22:33 ` Rafael J. Wysocki
2009-08-19 14:07 ` Alan Stern
2009-08-19 21:17 ` Rafael J. Wysocki
2009-08-19 22:34 ` Alan Stern
2009-08-20 15:56 ` Rafael J. Wysocki
2009-08-26 13:20 ` 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=200908222345.24834.rjw@sisk.pl \
--to=rjw@sisk.pl \
--cc=arjan@linux.intel.com \
--cc=lenb@kernel.org \
--cc=linux-acpi@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pm@lists.linux-foundation.org \
--cc=pavel@ucw.cz \
--cc=rui.zhang@intel.com \
--cc=stern@rowland.harvard.edu \
/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