From: Arjan van de Ven <arjan@linux.intel.com>
To: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Dan Williams <dan.j.williams@intel.com>,
mroos@linux.ee, linux-scsi@vger.kernel.org,
Mark Brown <broonie@opensource.wolfsonmicro.com>,
linux-kernel@vger.kernel.org, Liam Girdwood <lrg@ti.com>
Subject: Re: [PATCH 1/4] async: introduce 'async_domain' type
Date: Fri, 25 May 2012 06:31:47 -0700 [thread overview]
Message-ID: <4FBF89C3.3050308@linux.intel.com> (raw)
In-Reply-To: <1337932267.2932.7.camel@dabdike.int.hansenpartnership.com>
On 5/25/2012 12:51 AM, James Bottomley wrote:
> On Fri, 2012-05-25 at 00:50 -0700, Dan Williams wrote:
>> This is in preparation for teaching async_synchronize_full() to sync all
>> pending async work, and not just on the async_running domain. This
>> conversion is functionally equivalent, just embedding the existing list
>> in a new async_domain type.
>
> This looks good, but I want Arjan and others who invented the async code
> to speed up boot to comment on all of this. What was the intention of
> async_synchronize_full() and if it wasn't to synchronise all domains,
> should we fix the documentation and add a new primitive to do that,
> since boot clearly assumes the all domains behaviour.
it was not what was intended originally (the domains were supposed to be
completely independent beasts), however I can see that this is confusing
and even undesired, so I am ok with the change.
Ideally we get a way to have an async domain opt out of the global sync,
but until I get an actual user of that into mainline, don't worry about it.
next prev parent reply other threads:[~2012-05-25 13:32 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-25 7:50 [RFT PATCH 0/4] fix / cleanup async scsi scanning Dan Williams
2012-05-25 7:50 ` [PATCH 1/4] async: introduce 'async_domain' type Dan Williams
2012-05-25 7:51 ` James Bottomley
2012-05-25 8:18 ` Dan Williams
2012-05-25 8:48 ` James Bottomley
2012-05-25 19:23 ` Rafael J. Wysocki
2012-05-25 13:31 ` Arjan van de Ven [this message]
2012-05-25 13:40 ` mroos
2012-05-25 15:05 ` Dan Williams
2012-05-27 22:34 ` Mark Brown
2012-05-25 7:50 ` [PATCH 2/4] async: make async_synchronize_full() flush all work regardless of domain Dan Williams
2012-05-25 7:50 ` [PATCH 3/4] scsi: queue async scan work to an async_schedule domain Dan Williams
2012-05-25 7:50 ` [PATCH 4/4] scsi: cleanup usages of scsi_complete_async_scans Dan Williams
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