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From: Alexander Holler <holler@ahsoftware.de>
To: Russell King - ARM Linux <linux@arm.linux.org.uk>,
	Andrzej Hajda <a.hajda@samsung.com>
Cc: "Mark Brown" <broonie@kernel.org>,
	"Tomeu Vizoso" <tomeu.vizoso@collabora.com>,
	linux-arm-kernel@lists.infradead.org,
	"Alexandre Courbot" <gnurou@gmail.com>,
	"Arnd Bergmann" <arnd@arndb.de>,
	"Dmitry Torokhov" <dmitry.torokhov@gmail.com>,
	"Grant Likely" <grant.likely@linaro.org>,
	"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
	"Ian Campbell" <ijc+devicetree@hellion.org.uk>,
	"Javier Martinez Canillas" <javier.martinez@collabora.co.uk>,
	"Krzysztof Kozlowski" <k.kozlowski@samsung.com>,
	"Kumar Gala" <galak@codeaurora.org>,
	"Len Brown" <lenb@kernel.org>,
	"Linus Walleij" <linus.walleij@linaro.org>,
	linux-kernel@vger.kernel.org, "Lv Zheng" <lv.zheng@intel.com>,
	"Mark Rutland" <mark.rutland@arm.com>,
	"Pawel Moll" <pawel.moll@arm.com>,
	"Rafael J. Wysocki" <rjw@rjwysocki.net>,
	"Robert Moore" <robert.moore@intel.com>,
	"Rob Herring" <robh+dt@kernel.org>,
	"Stephen Warren" <swarren@wwwdotorg.org>,
	"Terje Bergström" <tbergstrom@nvidia.com>,
	"Thierry Reding" <thierry.reding@gmail.com>
Subject: Re: [PATCH 00/13] Discover and probe dependencies
Date: Thu, 18 Jun 2015 17:32:06 +0200	[thread overview]
Message-ID: <5582E476.6040905@ahsoftware.de> (raw)
In-Reply-To: <20150618144934.GM7557@n2100.arm.linux.org.uk>

Am 18.06.2015 um 16:49 schrieb Russell King - ARM Linux:

> I think you may need to pick a better example to illustrate your point. :)

It's easy to describe: Sort driver probe calls and forget about the 
whole device-stuff.

The real target is to sort the driver probe calls and ideally the whole 
device stuff could be ignored, leaving it as however it may work.

Unfortunately, that's not as easy to implement as it sounds. ;)

I've too hit the device-stuff very late in my driver-probe-ordering 
experiment and just did it somehow, because I already was at the limit 
of the time I wanted to spend. ;)

So to repeat myself, I think the first target has to be to identify 
drivers either without having to call their initcalls at all, or by 
making sure their initcalls just register and do nothing else (what I've 
called "well-done").

Regards,

Alexander Holler

WARNING: multiple messages have this Message-ID (diff)
From: holler@ahsoftware.de (Alexander Holler)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 00/13] Discover and probe dependencies
Date: Thu, 18 Jun 2015 17:32:06 +0200	[thread overview]
Message-ID: <5582E476.6040905@ahsoftware.de> (raw)
In-Reply-To: <20150618144934.GM7557@n2100.arm.linux.org.uk>

Am 18.06.2015 um 16:49 schrieb Russell King - ARM Linux:

> I think you may need to pick a better example to illustrate your point. :)

It's easy to describe: Sort driver probe calls and forget about the 
whole device-stuff.

The real target is to sort the driver probe calls and ideally the whole 
device stuff could be ignored, leaving it as however it may work.

Unfortunately, that's not as easy to implement as it sounds. ;)

I've too hit the device-stuff very late in my driver-probe-ordering 
experiment and just did it somehow, because I already was at the limit 
of the time I wanted to spend. ;)

So to repeat myself, I think the first target has to be to identify 
drivers either without having to call their initcalls at all, or by 
making sure their initcalls just register and do nothing else (what I've 
called "well-done").

Regards,

Alexander Holler

  reply	other threads:[~2015-06-18 15:32 UTC|newest]

Thread overview: 92+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-06-17 13:42 [PATCH 00/13] Discover and probe dependencies Tomeu Vizoso
2015-06-17 13:42 ` Tomeu Vizoso
2015-06-17 13:42 ` [PATCH 01/13] gpiolib: Fix docs for gpiochip_add_pingroup_range Tomeu Vizoso
2015-06-17 13:42   ` Tomeu Vizoso
2015-07-13 12:16   ` Linus Walleij
2015-07-13 12:16     ` Linus Walleij
2015-06-17 13:42 ` [PATCH 02/13] driver-core: defer all probes until late_initcall Tomeu Vizoso
2015-06-17 13:42   ` Tomeu Vizoso
2015-06-18 21:50   ` Rafael J. Wysocki
2015-06-18 21:50     ` Rafael J. Wysocki
2015-06-19 13:36     ` Tomeu Vizoso
2015-06-19 13:36       ` Tomeu Vizoso
2015-06-19 23:20       ` Rafael J. Wysocki
2015-06-19 23:20         ` Rafael J. Wysocki
2015-06-23  0:07         ` Rob Herring
2015-06-23  0:07           ` Rob Herring
2015-06-23 14:37           ` Rafael J. Wysocki
2015-06-23 14:37             ` Rafael J. Wysocki
2015-06-23 14:17             ` Tomeu Vizoso
2015-06-23 14:17               ` Tomeu Vizoso
2015-06-23 14:51               ` Rafael J. Wysocki
2015-06-23 14:51                 ` Rafael J. Wysocki
2015-06-23 14:37                 ` Tomeu Vizoso
2015-06-23 14:37                   ` Tomeu Vizoso
2015-06-24  0:14                   ` Rafael J. Wysocki
2015-06-24  0:14                     ` Rafael J. Wysocki
2015-06-17 13:42 ` [PATCH 03/13] ARM: tegra: Add gpio-ranges property Tomeu Vizoso
2015-06-17 13:42   ` Tomeu Vizoso
2015-06-17 17:25   ` Mark Brown
2015-06-17 17:25     ` Mark Brown
2015-06-18  8:06     ` Tomeu Vizoso
2015-06-18  8:06       ` Tomeu Vizoso
2015-06-17 13:42 ` [PATCH 04/13] pinctrl: tegra: Only set the gpio range if needed Tomeu Vizoso
2015-06-17 13:42   ` Tomeu Vizoso
2015-07-13 20:14   ` Linus Walleij
2015-07-13 20:14     ` Linus Walleij
2015-07-14  8:34     ` Tomeu Vizoso
2015-07-14  8:34       ` Tomeu Vizoso
2015-07-15  3:17       ` Alexandre Courbot
2015-07-15  3:17         ` Alexandre Courbot
2015-07-15  8:13         ` Tomeu Vizoso
2015-07-15  8:13           ` Tomeu Vizoso
2015-07-17  8:04       ` Linus Walleij
2015-07-17  8:04         ` Linus Walleij
2015-07-17  8:19         ` Tomeu Vizoso
2015-07-17  8:19           ` Tomeu Vizoso
2015-07-17  9:36           ` Linus Walleij
2015-07-17  9:36             ` Linus Walleij
2015-06-17 13:42 ` [PATCH 05/13] driver core: fix docbook for device_private.device Tomeu Vizoso
2015-06-17 13:42   ` Tomeu Vizoso
2015-06-17 13:42 ` [PATCH 06/13] of/platform: Set fwnode field for new devices Tomeu Vizoso
2015-06-17 13:42   ` Tomeu Vizoso
2015-06-17 17:27   ` Mark Brown
2015-06-17 17:27     ` Mark Brown
2015-06-17 13:42 ` [PATCH 07/13] driver-core: Add class.get_dependencies() callback Tomeu Vizoso
2015-06-17 13:42   ` Tomeu Vizoso
2015-06-17 13:42 ` [PATCH 08/13] gpio: sysfs: implement class.get_dependencies() Tomeu Vizoso
2015-06-17 13:42   ` Tomeu Vizoso
2015-06-17 17:40   ` Mark Brown
2015-06-17 17:40     ` Mark Brown
2015-06-30 15:00     ` Tomeu Vizoso
2015-06-30 15:00       ` Tomeu Vizoso
2015-06-17 13:42 ` [PATCH 09/13] gpu: host1x: " Tomeu Vizoso
2015-06-17 13:42   ` Tomeu Vizoso
2015-06-17 13:42 ` [PATCH 10/13] driver-core: add for_each_class() Tomeu Vizoso
2015-06-17 13:42   ` Tomeu Vizoso
2015-06-17 13:42 ` [PATCH 11/13] device property: add fwnode_get_parent() Tomeu Vizoso
2015-06-17 13:42   ` Tomeu Vizoso
2015-06-17 13:42 ` [PATCH 12/13] device property: add fwnode_get_name() Tomeu Vizoso
2015-06-17 13:42   ` Tomeu Vizoso
2015-06-17 13:42 ` [PATCH 13/13] driver-core: probe dependencies before probing Tomeu Vizoso
2015-06-17 13:42   ` Tomeu Vizoso
2015-06-17 18:13   ` Mark Brown
2015-06-17 18:13     ` Mark Brown
2015-06-30 15:18     ` Tomeu Vizoso
2015-06-30 15:18       ` Tomeu Vizoso
2015-06-18  9:42 ` [PATCH 00/13] Discover and probe dependencies Andrzej Hajda
2015-06-18  9:42   ` Andrzej Hajda
2015-06-18  9:57   ` Russell King - ARM Linux
2015-06-18  9:57     ` Russell King - ARM Linux
2015-06-18 10:36   ` Mark Brown
2015-06-18 10:36     ` Mark Brown
2015-06-18 13:14     ` Andrzej Hajda
2015-06-18 13:14       ` Andrzej Hajda
2015-06-18 14:38       ` Tomeu Vizoso
2015-06-18 14:38         ` Tomeu Vizoso
2015-06-18 14:49       ` Russell King - ARM Linux
2015-06-18 14:49         ` Russell King - ARM Linux
2015-06-18 15:32         ` Alexander Holler [this message]
2015-06-18 15:32           ` Alexander Holler
2015-06-18 14:57   ` Tomeu Vizoso
2015-06-18 14:57     ` Tomeu Vizoso

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