From: Guenter Roeck <linux@roeck-us.net>
To: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>,
linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
linux-watchdog@vger.kernel.org
Cc: Wim Van Sebroeck <wim@iguana.be>,
Jason Gunthorpe <jgunthorpe@obsidianresearch.com>,
Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>,
Arnd Bergmann <arnd@arndb.de>,
Daniel Lezcano <daniel.lezcano@linaro.org>,
Fabio Estevam <festevam@gmail.com>, Andrew Lunn <andrew@lunn.ch>,
Thomas Petazzoni <thomas.petazzoni@free-electrons.com>,
Gregory Clement <gregory.clement@free-electrons.com>,
Tawfik Bayouk <tawfik@marvell.com>,
Lior Amsalem <alior@marvell.com>,
Jason Cooper <jason@lakedaemon.net>
Subject: Re: [PATCH v4 04/18] watchdog: orion: Use atomic access for shared registers
Date: Sat, 25 Jan 2014 10:12:37 -0800 [thread overview]
Message-ID: <52E3FE95.5040906@roeck-us.net> (raw)
In-Reply-To: <1390431915-5115-5-git-send-email-ezequiel.garcia@free-electrons.com>
On 01/22/2014 03:05 PM, Ezequiel Garcia wrote:
> Since the timer control register is shared with the clocksource driver,
> use the recently introduced atomic_io_clear_set() to access such register.
> Given the watchdog core already provides serialization for all the
> watchdog ops, this commit allows to remove the spinlock entirely.
>
> Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
WARNING: multiple messages have this Message-ID (diff)
From: linux@roeck-us.net (Guenter Roeck)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v4 04/18] watchdog: orion: Use atomic access for shared registers
Date: Sat, 25 Jan 2014 10:12:37 -0800 [thread overview]
Message-ID: <52E3FE95.5040906@roeck-us.net> (raw)
In-Reply-To: <1390431915-5115-5-git-send-email-ezequiel.garcia@free-electrons.com>
On 01/22/2014 03:05 PM, Ezequiel Garcia wrote:
> Since the timer control register is shared with the clocksource driver,
> use the recently introduced atomic_io_clear_set() to access such register.
> Given the watchdog core already provides serialization for all the
> watchdog ops, this commit allows to remove the spinlock entirely.
>
> Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
WARNING: multiple messages have this Message-ID (diff)
From: Guenter Roeck <linux-0h96xk9xTtrk1uMJSBkQmQ@public.gmane.org>
To: Ezequiel Garcia
<ezequiel.garcia-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-watchdog-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Cc: Wim Van Sebroeck <wim-IQzOog9fTRqzQB+pC5nmwQ@public.gmane.org>,
Jason Gunthorpe
<jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>,
Sebastian Hesselbarth
<sebastian.hesselbarth-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>,
Daniel Lezcano
<daniel.lezcano-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
Fabio Estevam <festevam-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Andrew Lunn <andrew-g2DYL2Zd6BY@public.gmane.org>,
Thomas Petazzoni
<thomas.petazzoni-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>,
Gregory Clement
<gregory.clement-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>,
Tawfik Bayouk <tawfik-eYqpPyKDWXRBDgjK7y7TUQ@public.gmane.org>,
Lior Amsalem <alior-eYqpPyKDWXRBDgjK7y7TUQ@public.gmane.org>,
Jason Cooper <jason-NLaQJdtUoK4Be96aLqz0jA@public.gmane.org>
Subject: Re: [PATCH v4 04/18] watchdog: orion: Use atomic access for shared registers
Date: Sat, 25 Jan 2014 10:12:37 -0800 [thread overview]
Message-ID: <52E3FE95.5040906@roeck-us.net> (raw)
In-Reply-To: <1390431915-5115-5-git-send-email-ezequiel.garcia-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
On 01/22/2014 03:05 PM, Ezequiel Garcia wrote:
> Since the timer control register is shared with the clocksource driver,
> use the recently introduced atomic_io_clear_set() to access such register.
> Given the watchdog core already provides serialization for all the
> watchdog ops, this commit allows to remove the spinlock entirely.
>
> Signed-off-by: Ezequiel Garcia <ezequiel.garcia-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
Reviewed-by: Guenter Roeck <linux-0h96xk9xTtrk1uMJSBkQmQ@public.gmane.org>
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next prev parent reply other threads:[~2014-01-25 18:12 UTC|newest]
Thread overview: 126+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-22 23:04 [PATCH v4 00/18] Armada 370/XP watchdog support Ezequiel Garcia
2014-01-22 23:04 ` Ezequiel Garcia
2014-01-22 23:04 ` Ezequiel Garcia
2014-01-22 23:04 ` [PATCH v4 01/18] ARM: Introduce atomic MMIO modify Ezequiel Garcia
2014-01-22 23:04 ` Ezequiel Garcia
2014-01-22 23:04 ` Ezequiel Garcia
2014-01-25 20:32 ` Jason Cooper
2014-01-25 20:32 ` Jason Cooper
2014-01-25 20:32 ` Jason Cooper
2014-01-22 23:04 ` [PATCH v4 02/18] clocksource: orion: Use atomic access for shared registers Ezequiel Garcia
2014-01-22 23:04 ` Ezequiel Garcia
2014-01-22 23:04 ` Ezequiel Garcia
2014-01-22 23:05 ` [PATCH v4 03/18] watchdog: orion: Add clock error handling Ezequiel Garcia
2014-01-22 23:05 ` Ezequiel Garcia
2014-01-22 23:05 ` Ezequiel Garcia
2014-01-25 18:12 ` Guenter Roeck
2014-01-25 18:12 ` Guenter Roeck
2014-01-25 18:12 ` Guenter Roeck
2014-01-22 23:05 ` [PATCH v4 04/18] watchdog: orion: Use atomic access for shared registers Ezequiel Garcia
2014-01-22 23:05 ` Ezequiel Garcia
2014-01-22 23:05 ` Ezequiel Garcia
2014-01-25 18:12 ` Guenter Roeck [this message]
2014-01-25 18:12 ` Guenter Roeck
2014-01-25 18:12 ` Guenter Roeck
2014-01-22 23:05 ` [PATCH v4 05/18] watchdog: orion: Remove unused macros Ezequiel Garcia
2014-01-22 23:05 ` Ezequiel Garcia
2014-01-22 23:05 ` Ezequiel Garcia
2014-01-25 18:13 ` Guenter Roeck
2014-01-25 18:13 ` Guenter Roeck
2014-01-25 18:13 ` Guenter Roeck
2014-01-22 23:05 ` [PATCH v4 06/18] watchdog: orion: Make sure the watchdog is initially stopped Ezequiel Garcia
2014-01-22 23:05 ` Ezequiel Garcia
2014-01-22 23:05 ` Ezequiel Garcia
2014-01-25 18:13 ` Guenter Roeck
2014-01-25 18:13 ` Guenter Roeck
2014-01-25 18:13 ` Guenter Roeck
2014-01-22 23:05 ` [PATCH v4 07/18] watchdog: orion: Handle IRQ Ezequiel Garcia
2014-01-22 23:05 ` Ezequiel Garcia
2014-01-22 23:05 ` Ezequiel Garcia
2014-01-25 18:15 ` Guenter Roeck
2014-01-25 18:15 ` Guenter Roeck
2014-01-25 18:15 ` Guenter Roeck
2014-01-26 8:04 ` Thomas Petazzoni
2014-01-26 8:04 ` Thomas Petazzoni
2014-01-26 8:04 ` Thomas Petazzoni
2014-01-26 13:14 ` Ezequiel Garcia
2014-01-26 13:14 ` Ezequiel Garcia
2014-01-26 13:14 ` Ezequiel Garcia
2014-01-26 14:57 ` Thomas Petazzoni
2014-01-26 14:57 ` Thomas Petazzoni
2014-01-26 14:57 ` Thomas Petazzoni
2014-01-22 23:05 ` [PATCH v4 08/18] watchdog: orion: Make RSTOUT register a separate resource Ezequiel Garcia
2014-01-22 23:05 ` Ezequiel Garcia
2014-01-22 23:05 ` Ezequiel Garcia
2014-01-25 18:19 ` Guenter Roeck
2014-01-25 18:19 ` Guenter Roeck
2014-01-25 18:19 ` Guenter Roeck
2014-01-26 13:20 ` Ezequiel Garcia
2014-01-26 13:20 ` Ezequiel Garcia
2014-01-26 13:20 ` Ezequiel Garcia
2014-01-26 8:17 ` Thomas Petazzoni
2014-01-26 8:17 ` Thomas Petazzoni
2014-01-26 8:17 ` Thomas Petazzoni
2014-01-26 13:18 ` Ezequiel Garcia
2014-01-26 13:18 ` Ezequiel Garcia
2014-01-26 13:18 ` Ezequiel Garcia
2014-01-22 23:05 ` [PATCH v4 09/18] watchdog: orion: Remove unneeded BRIDGE_CAUSE clear Ezequiel Garcia
2014-01-22 23:05 ` Ezequiel Garcia
2014-01-22 23:05 ` Ezequiel Garcia
2014-01-25 18:20 ` Guenter Roeck
2014-01-25 18:20 ` Guenter Roeck
2014-01-25 18:20 ` Guenter Roeck
2014-01-22 23:05 ` [PATCH v4 10/18] watchdog: orion: Introduce an orion_watchdog device structure Ezequiel Garcia
2014-01-22 23:05 ` Ezequiel Garcia
2014-01-22 23:05 ` Ezequiel Garcia
2014-01-25 18:21 ` Guenter Roeck
2014-01-25 18:21 ` Guenter Roeck
2014-01-25 18:21 ` Guenter Roeck
2014-01-22 23:05 ` [PATCH v4 11/18] watchdog: orion: Introduce per-compatible of_device_id data Ezequiel Garcia
2014-01-22 23:05 ` Ezequiel Garcia
2014-01-22 23:05 ` Ezequiel Garcia
2014-01-25 18:23 ` Guenter Roeck
2014-01-25 18:23 ` Guenter Roeck
2014-01-25 18:23 ` Guenter Roeck
2014-01-22 23:05 ` [PATCH v4 12/18] watchdog: orion: Add per-compatible clock initialization Ezequiel Garcia
2014-01-22 23:05 ` Ezequiel Garcia
2014-01-22 23:05 ` Ezequiel Garcia
2014-01-25 18:24 ` Guenter Roeck
2014-01-25 18:24 ` Guenter Roeck
2014-01-25 18:24 ` Guenter Roeck
2014-01-22 23:05 ` [PATCH v4 13/18] watchdog: orion: Add per-compatible watchdog start implementation Ezequiel Garcia
2014-01-22 23:05 ` Ezequiel Garcia
2014-01-22 23:05 ` Ezequiel Garcia
2014-01-25 18:24 ` Guenter Roeck
2014-01-25 18:24 ` Guenter Roeck
2014-01-25 18:24 ` Guenter Roeck
2014-01-22 23:05 ` [PATCH v4 14/18] watchdog: orion: Add support for Armada 370 and Armada XP SoC Ezequiel Garcia
2014-01-22 23:05 ` Ezequiel Garcia
2014-01-22 23:05 ` Ezequiel Garcia
2014-01-25 18:25 ` Guenter Roeck
2014-01-25 18:25 ` Guenter Roeck
2014-01-25 18:25 ` Guenter Roeck
2014-01-22 23:05 ` [PATCH v4 15/18] ARM: mvebu: Enable Armada 370/XP watchdog in the devicetree Ezequiel Garcia
2014-01-22 23:05 ` Ezequiel Garcia
2014-01-22 23:05 ` Ezequiel Garcia
2014-01-22 23:05 ` [PATCH v4 16/18] ARM: kirkwood: Add RSTOUT 'reg' entry to devicetree Ezequiel Garcia
2014-01-22 23:05 ` Ezequiel Garcia
2014-01-22 23:05 ` Ezequiel Garcia
2014-01-22 23:05 ` [PATCH v4 17/18] watchdog: orion: Enable the build on ARCH_MVEBU Ezequiel Garcia
2014-01-22 23:05 ` Ezequiel Garcia
2014-01-22 23:05 ` Ezequiel Garcia
2014-01-22 23:05 ` [PATCH v4 18/18] ARM: mvebu: Enable watchdog support in defconfig Ezequiel Garcia
2014-01-22 23:05 ` Ezequiel Garcia
2014-01-22 23:05 ` Ezequiel Garcia
2014-01-23 22:40 ` [PATCH v4 00/18] Armada 370/XP watchdog support Sebastian Hesselbarth
2014-01-23 22:40 ` Sebastian Hesselbarth
2014-01-23 22:40 ` Sebastian Hesselbarth
2014-01-25 17:09 ` Ezequiel Garcia
2014-01-25 17:09 ` Ezequiel Garcia
2014-01-25 17:09 ` Ezequiel Garcia
2014-01-27 14:49 ` Ezequiel Garcia
2014-01-27 14:49 ` Ezequiel Garcia
2014-01-27 14:49 ` Ezequiel Garcia
2014-01-25 16:57 ` Ezequiel Garcia
2014-01-25 16:57 ` Ezequiel Garcia
2014-01-25 16:57 ` Ezequiel Garcia
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