From: gregkh@linuxfoundation.org (Greg Kroah-Hartman)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 01/12] misc: vexpress-syscfg: Add udelay-based delay
Date: Sat, 15 Feb 2014 11:19:32 -0800 [thread overview]
Message-ID: <20140215191932.GA2280@kroah.com> (raw)
In-Reply-To: <1392138636-29240-2-git-send-email-pawel.moll@arm.com>
On Tue, Feb 11, 2014 at 05:10:25PM +0000, Pawel Moll wrote:
> It is normally preferable to yield the task
> waiting for syscfg operations (that can take
> up to dozens of milliseconds), but when the
> system is shutting down it may not be possible.
Really? What happens at shutdown that prevents things from being
scheduled? Why would you want to busy-loop instead at this point in
time?
thanks,
greg k-h
WARNING: multiple messages have this Message-ID (diff)
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Pawel Moll <pawel.moll@arm.com>
Cc: arm@kernel.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, Arnd Bergmann <arnd@arndb.de>
Subject: Re: [PATCH 01/12] misc: vexpress-syscfg: Add udelay-based delay
Date: Sat, 15 Feb 2014 11:19:32 -0800 [thread overview]
Message-ID: <20140215191932.GA2280@kroah.com> (raw)
In-Reply-To: <1392138636-29240-2-git-send-email-pawel.moll@arm.com>
On Tue, Feb 11, 2014 at 05:10:25PM +0000, Pawel Moll wrote:
> It is normally preferable to yield the task
> waiting for syscfg operations (that can take
> up to dozens of milliseconds), but when the
> system is shutting down it may not be possible.
Really? What happens at shutdown that prevents things from being
scheduled? Why would you want to busy-loop instead at this point in
time?
thanks,
greg k-h
next prev parent reply other threads:[~2014-02-15 19:19 UTC|newest]
Thread overview: 112+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-11 17:10 [lm-sensors] [PATCH 00/12] Versatile Express updates Pawel Moll
2014-02-11 17:10 ` Pawel Moll
2014-02-11 17:10 ` Pawel Moll
2014-02-11 17:10 ` [PATCH 01/12] misc: vexpress-syscfg: Add udelay-based delay Pawel Moll
2014-02-11 17:10 ` Pawel Moll
2014-02-15 19:19 ` Greg Kroah-Hartman [this message]
2014-02-15 19:19 ` Greg Kroah-Hartman
2014-02-11 17:10 ` [PATCH 02/12] power/reset: vexpress: Use udelay instead of timers Pawel Moll
2014-02-11 17:10 ` Pawel Moll
2014-02-11 20:59 ` Arnd Bergmann
2014-02-11 20:59 ` Arnd Bergmann
2014-02-12 11:56 ` Pawel Moll
2014-02-12 11:56 ` Pawel Moll
2014-02-11 17:10 ` [PATCH 03/12] clk: versatile: Split config options for sp810 and vexpress_osc Pawel Moll
2014-02-11 17:10 ` Pawel Moll
2014-02-11 17:10 ` [PATCH 04/12] clocksource: Sched clock source for Versatile Express Pawel Moll
2014-02-11 17:10 ` Pawel Moll
2014-04-16 13:56 ` Rob Herring
2014-04-16 13:56 ` Rob Herring
2014-04-16 14:22 ` Pawel Moll
2014-04-16 14:22 ` Pawel Moll
2014-04-16 14:45 ` Rob Herring
2014-04-16 14:45 ` Rob Herring
2014-04-16 15:05 ` Pawel Moll
2014-04-16 15:05 ` Pawel Moll
2014-05-02 22:14 ` Linus Walleij
2014-05-02 22:14 ` Linus Walleij
2014-05-07 9:57 ` Pawel Moll
2014-05-07 9:57 ` Pawel Moll
2014-05-13 8:47 ` Linus Walleij
2014-05-13 8:47 ` Linus Walleij
2014-02-11 17:10 ` [PATCH 05/12] GPIO: gpio-generic: Add label to platform data Pawel Moll
2014-02-11 17:10 ` Pawel Moll
2014-02-11 17:17 ` Lee Jones
2014-02-11 17:17 ` Lee Jones
2014-02-11 17:20 ` Pawel Moll
2014-02-11 17:20 ` Pawel Moll
2014-02-11 17:29 ` Pawel Moll
2014-02-11 17:29 ` Pawel Moll
2014-02-11 17:46 ` Lee Jones
2014-02-11 17:46 ` Lee Jones
2014-02-11 17:10 ` [PATCH 06/12] mfd: vexpress-sysreg: Add labels to gpio banks Pawel Moll
2014-02-11 17:10 ` Pawel Moll
2014-02-11 17:19 ` Lee Jones
2014-02-11 17:19 ` Lee Jones
2014-02-13 13:08 ` Linus Walleij
2014-02-13 13:08 ` Linus Walleij
2014-02-13 13:11 ` Pawel Moll
2014-02-13 13:11 ` Pawel Moll
2014-02-11 17:10 ` [PATCH 07/12] mfd: syscon: Consider platform data a regmap config name Pawel Moll
2014-02-11 17:10 ` Pawel Moll
2014-02-11 17:24 ` Lee Jones
2014-02-11 17:24 ` Lee Jones
2014-02-12 7:09 ` Alexander Shiyan
2014-02-12 7:09 ` Alexander Shiyan
2014-02-12 8:26 ` Lee Jones
2014-02-12 8:26 ` Lee Jones
2014-02-12 11:06 ` Pawel Moll
2014-02-12 11:06 ` Pawel Moll
2014-02-12 11:18 ` Lee Jones
2014-02-12 11:18 ` Lee Jones
2014-02-12 11:27 ` Alexander Shiyan
2014-02-12 11:27 ` Alexander Shiyan
2014-02-12 11:43 ` Pawel Moll
2014-02-12 11:43 ` Pawel Moll
2014-02-11 17:10 ` [PATCH 08/12] mfd: vexpress-sysreg: Add syscon labels as platform data Pawel Moll
2014-02-11 17:10 ` Pawel Moll
2014-02-11 17:29 ` Lee Jones
2014-02-11 17:29 ` Lee Jones
2014-02-11 17:32 ` Pawel Moll
2014-02-11 17:32 ` Pawel Moll
2014-02-11 17:48 ` Lee Jones
2014-02-11 17:48 ` Lee Jones
2014-02-11 17:52 ` [PATCH v2 1/2] mfd: syscon: Add platform data with a regmap config name Pawel Moll
2014-02-11 17:52 ` Pawel Moll
2014-02-11 17:52 ` [PATCH v2 2/2] mfd: vexpress-sysreg: Add syscon labels as platform data Pawel Moll
2014-02-11 17:52 ` Pawel Moll
2014-02-12 11:20 ` Lee Jones
2014-02-12 11:20 ` Lee Jones
2014-02-11 17:55 ` [PATCH v2 1/2] mfd: syscon: Add platform data with a regmap config name Pawel Moll
2014-02-11 17:55 ` Pawel Moll
2014-02-12 11:19 ` Lee Jones
2014-02-12 11:19 ` Lee Jones
2014-02-11 17:10 ` [lm-sensors] [PATCH 09/12] hwmon: vexpress: Use devm helper for hwmon device registration Pawel Moll
2014-02-11 17:10 ` Pawel Moll
2014-02-11 17:10 ` Pawel Moll
2014-02-11 20:57 ` [lm-sensors] " Arnd Bergmann
2014-02-11 20:57 ` Arnd Bergmann
2014-02-11 20:57 ` Arnd Bergmann
2014-02-12 2:49 ` [lm-sensors] " Guenter Roeck
2014-02-12 2:49 ` Guenter Roeck
2014-02-12 11:56 ` [lm-sensors] " Pawel Moll
2014-02-12 11:56 ` Pawel Moll
2014-02-12 11:56 ` Pawel Moll
2014-02-12 11:59 ` [lm-sensors] " Pawel Moll
2014-02-12 11:59 ` Pawel Moll
2014-02-12 11:59 ` Pawel Moll
2014-02-12 16:41 ` [lm-sensors] " Guenter Roeck
2014-02-12 16:41 ` Guenter Roeck
2014-02-12 16:41 ` Guenter Roeck
2014-02-11 17:10 ` [PATCH 10/12] ARM: vexpress: remove redundant vexpress_dt_cpus_num to get cpu count Pawel Moll
2014-02-11 17:10 ` Pawel Moll
2014-02-11 17:10 ` [PATCH 11/12] ARM: vexpress: Simplify SMP operations for DT-powered system Pawel Moll
2014-02-11 17:10 ` Pawel Moll
2014-02-11 17:10 ` [PATCH 12/12] ARM: vexpress: move HBI check to sysreg driver Pawel Moll
2014-02-11 17:10 ` Pawel Moll
2014-02-11 19:28 ` [lm-sensors] [PATCH 00/12] Versatile Express updates Arnd Bergmann
2014-02-11 19:28 ` Arnd Bergmann
2014-02-11 19:28 ` Arnd Bergmann
2014-02-12 12:30 ` [lm-sensors] " Pawel Moll
2014-02-12 12:30 ` Pawel Moll
2014-02-12 12:30 ` Pawel Moll
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