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From: Tejun Heo <tj@kernel.org>
To: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Borislav Petkov <bp@alien8.de>,
	Doug Thompson <dougthompson@xmission.com>,
	linux-kernel@vger.kernel.org, linux-edac@vger.kernel.org,
	Mauro Carvalho Chehab <mchehab@osg.samsung.com>,
	Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>,
	Olof Johansson <olof@lixom.net>,
	Arjan van de Ven <arjan@linux.intel.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	"Luis R . Rodriguez" <mcgrof@suse.com>
Subject: Re: [PATCH 3/3] EDAC: amd64_edac: decide if driver can load successfully early.
Date: Thu, 19 Mar 2015 13:22:28 -0400	[thread overview]
Message-ID: <20150319172228.GT25365@htj.duckdns.org> (raw)
In-Reply-To: <20150319165741.GH30732@dtor-ws>

On Thu, Mar 19, 2015 at 09:57:41AM -0700, Dmitry Torokhov wrote:
> In all fairness platform_driver_probe() does pretty much the same and
> forces us to mark thus drivers with PROBE_FORCE_SYNCHRONOUS as well. And
> there are quite a few of them:
> 
> dtor@dtor-ws:~/kernel/work$ grep -r "platform_driver_probe" drivers/ |
> wc -l
> 186
> 
> What makes edac unusual is that PCI bus is hot-pluggable and thus PCI
> drivers are rarely one-shot.

As long as it's not buried in each driver and has some generic model,
it's okay.  They're at least annotated and digging them out and
handling them as a class of drivers is okay but we really should stay
away from one-off hacks in individual drivers.  Things like that add a
lot of overhead in the long term.  I'm just kinda baffled that
Borislav's response to "that's hacky, let's not do that or do that in
a generic manner" is coming back with more hacks.

Thanks.

-- 
tejun

      reply	other threads:[~2015-03-19 17:22 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-03-19  0:49 [RFC/RFT] amd64_edac: avoid doing post-probe setup Dmitry Torokhov
2015-03-19  0:49 ` [PATCH 1/3] EDAC: amd64: stop allocating ecc settings separately Dmitry Torokhov
2015-03-19  0:49 ` [PATCH 2/3] EDAC: amd64_edac: clean up remove_one_instance() Dmitry Torokhov
2015-03-19  0:49 ` [PATCH 3/3] EDAC: amd64_edac: decide if driver can load successfully early Dmitry Torokhov
2015-03-19  9:40   ` Borislav Petkov
2015-03-19 15:29     ` Tejun Heo
2015-03-19 15:35       ` Borislav Petkov
2015-03-19 15:52         ` Dmitry Torokhov
2015-03-19 15:59           ` Borislav Petkov
2015-03-19 16:12             ` Dmitry Torokhov
2015-03-19 16:23               ` Borislav Petkov
2015-03-19 16:33                 ` Tejun Heo
2015-03-19 16:45                   ` Borislav Petkov
2015-03-19 16:49                     ` Tejun Heo
2015-03-19 16:56                       ` Borislav Petkov
2015-03-19 17:03                         ` Tejun Heo
2015-03-19 17:04                           ` Borislav Petkov
2015-03-19 17:10                             ` Tejun Heo
2015-03-19 17:15                               ` Tejun Heo
2015-03-19 17:27                                 ` Borislav Petkov
2015-03-19 17:47                                   ` Tejun Heo
2015-03-19 17:54                                     ` Borislav Petkov
2015-03-19 18:05                                       ` Tejun Heo
2015-03-19 16:52                   ` Dmitry Torokhov
2015-03-19 17:09                     ` Tejun Heo
2015-03-19 15:55         ` Tejun Heo
2015-03-19 16:01           ` Borislav Petkov
2015-03-19 16:12             ` Tejun Heo
2015-03-19 16:57               ` Dmitry Torokhov
2015-03-19 17:22                 ` Tejun Heo [this message]

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