From: skannan@codeaurora.org (Saravana Kannan)
To: linux-arm-kernel@lists.infradead.org
Subject: Locking in the clk API
Date: Fri, 21 Jan 2011 17:47:28 -0800 [thread overview]
Message-ID: <4D3A3730.8070304@codeaurora.org> (raw)
In-Reply-To: <20110121094042.GD13235@n2100.arm.linux.org.uk>
On 01/21/2011 01:40 AM, Russell King - ARM Linux wrote:
> On Thu, Jan 20, 2011 at 11:16:04PM -0800, Saravana Kannan wrote:
>> This suggestion looked promising till I realized that clk_set_rate()
>> will still be atomic. clk_set_rate() will need to enable/disable the
>> PLLs depending on which PLLs the rates are derived from. So, the locking
>> in clk_prepare/unprepare() still has to be atomic since the "slow stuff"
>> is shared with clk_set_rate().
>
> Who calls clk_set_rate() from an atomic context? Do we know whether
> anyone does?
I have had internal teams asking about it. I will try to check if they
mainlined any of it yet or continue to want to do that in atomic context
and get back.
-Saravana
--
Sent by an employee of the Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum.
next prev parent reply other threads:[~2011-01-22 1:47 UTC|newest]
Thread overview: 248+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-11 2:16 Locking in the clk API Jeremy Kerr
2011-01-11 2:16 ` Jeremy Kerr
2011-01-11 2:16 ` Jeremy Kerr
2011-01-11 3:15 ` Paul Mundt
2011-01-11 3:15 ` Paul Mundt
2011-01-11 3:15 ` Paul Mundt
2011-01-11 4:11 ` Jeremy Kerr
2011-01-11 4:11 ` Jeremy Kerr
2011-01-11 4:11 ` Jeremy Kerr
2011-01-11 4:54 ` Paul Mundt
2011-01-11 4:54 ` Paul Mundt
2011-01-11 4:54 ` Paul Mundt
2011-01-20 16:32 ` Ben Dooks
2011-01-20 16:32 ` Ben Dooks
2011-01-20 16:32 ` Ben Dooks
2011-01-20 18:57 ` Russell King - ARM Linux
2011-01-20 18:57 ` Russell King - ARM Linux
2011-01-20 18:57 ` Russell King - ARM Linux
2011-01-21 3:43 ` Saravana Kannan
2011-01-21 3:43 ` Saravana Kannan
2011-01-21 3:43 ` Saravana Kannan
2011-01-21 9:31 ` Russell King - ARM Linux
2011-01-21 9:31 ` Russell King - ARM Linux
2011-01-21 9:31 ` Russell King - ARM Linux
2011-01-11 9:03 ` Sascha Hauer
2011-01-11 9:03 ` Sascha Hauer
2011-01-11 9:03 ` Sascha Hauer
2011-01-11 9:28 ` Russell King - ARM Linux
2011-01-11 9:28 ` Russell King - ARM Linux
2011-01-11 9:28 ` Russell King - ARM Linux
2011-01-11 14:34 ` Pavel Machek
2011-01-11 14:34 ` Pavel Machek
2011-01-11 14:34 ` Pavel Machek
2011-01-20 16:29 ` Ben Dooks
2011-01-20 16:29 ` Ben Dooks
2011-01-20 16:29 ` Ben Dooks
2011-01-20 18:56 ` Russell King - ARM Linux
2011-01-20 18:56 ` Russell King - ARM Linux
2011-01-20 18:56 ` Russell King - ARM Linux
2011-01-20 21:30 ` Nicolas Pitre
2011-01-20 21:30 ` Nicolas Pitre
2011-01-20 21:30 ` Nicolas Pitre
2011-01-21 2:06 ` Dima Zavin
2011-01-21 2:06 ` Dima Zavin
2011-01-21 2:06 ` Dima Zavin
2011-01-21 4:12 ` Saravana Kannan
2011-01-21 4:12 ` Saravana Kannan
2011-01-21 4:12 ` Saravana Kannan
2011-01-21 9:32 ` Russell King - ARM Linux
2011-01-21 9:32 ` Russell King - ARM Linux
2011-01-21 9:32 ` Russell King - ARM Linux
2011-01-22 1:53 ` Saravana Kannan
2011-01-22 2:24 ` Colin Cross
2011-01-22 2:56 ` Saravana Kannan
2011-01-22 9:15 ` Russell King - ARM Linux
2011-01-24 19:31 ` Saravana Kannan
2011-01-21 21:03 ` Dima Zavin
2011-01-21 21:03 ` Dima Zavin
2011-01-21 21:03 ` Dima Zavin
2011-01-21 21:53 ` Nicolas Pitre
2011-01-21 21:53 ` Nicolas Pitre
2011-01-21 21:53 ` Nicolas Pitre
2011-01-21 22:02 ` Russell King - ARM Linux
2011-01-21 22:02 ` Russell King - ARM Linux
2011-01-21 22:02 ` Russell King - ARM Linux
2011-01-21 22:28 ` Colin Cross
2011-01-21 22:28 ` Colin Cross
2011-01-21 22:28 ` Colin Cross
2011-01-21 23:21 ` Benjamin Herrenschmidt
2011-01-21 23:21 ` Benjamin Herrenschmidt
2011-01-21 23:21 ` Benjamin Herrenschmidt
2011-01-21 23:50 ` Nicolas Pitre
2011-01-21 23:50 ` Nicolas Pitre
2011-01-21 23:50 ` Nicolas Pitre
2011-01-22 1:35 ` Saravana Kannan
2011-01-22 1:35 ` Saravana Kannan
2011-01-22 1:35 ` Saravana Kannan
2011-01-22 2:22 ` Colin Cross
2011-01-22 2:22 ` Colin Cross
2011-01-22 2:22 ` Colin Cross
2011-01-21 22:29 ` Nicolas Pitre
2011-01-21 22:29 ` Nicolas Pitre
2011-01-21 22:29 ` Nicolas Pitre
2011-01-21 23:28 ` Bryan Huntsman
2011-01-21 23:28 ` Bryan Huntsman
2011-01-21 23:28 ` Bryan Huntsman
2011-01-11 9:16 ` Russell King - ARM Linux
2011-01-11 9:16 ` Russell King - ARM Linux
2011-01-11 9:16 ` Russell King - ARM Linux
2011-01-11 9:44 ` Jeremy Kerr
2011-01-11 9:44 ` Jeremy Kerr
2011-01-11 9:44 ` Jeremy Kerr
2011-01-11 10:13 ` Paul Mundt
2011-01-11 10:13 ` Paul Mundt
2011-01-11 10:13 ` Paul Mundt
2011-01-11 10:30 ` Jeremy Kerr
2011-01-11 10:30 ` Jeremy Kerr
2011-01-11 10:30 ` Jeremy Kerr
2011-01-11 12:18 ` Paul Mundt
2011-01-11 12:18 ` Paul Mundt
2011-01-11 12:18 ` Paul Mundt
2011-01-11 13:52 `
2011-01-11 13:52 ` Uwe Kleine-König
2011-01-11 13:52 ` Uwe Kleine-König
2011-01-11 14:35 ` Jeremy Kerr
2011-01-11 14:35 ` Jeremy Kerr
2011-01-11 14:35 ` Jeremy Kerr
2011-01-12 3:25 ` Saravana Kannan
2011-01-12 3:25 ` Saravana Kannan
2011-01-12 3:25 ` Saravana Kannan
2011-01-12 7:40 `
2011-01-12 7:40 ` Uwe Kleine-König
2011-01-12 7:40 ` Uwe Kleine-König
2011-01-12 1:54 ` Saravana Kannan
2011-01-12 1:54 ` Saravana Kannan
2011-01-12 1:54 ` Saravana Kannan
2011-01-12 2:25 ` Paul Mundt
2011-01-12 2:25 ` Paul Mundt
2011-01-12 2:25 ` Paul Mundt
2011-01-20 16:57 ` Ben Dooks
2011-01-20 16:57 ` Ben Dooks
2011-01-20 16:57 ` Ben Dooks
2011-01-20 16:53 ` Ben Dooks
2011-01-20 16:53 ` Ben Dooks
2011-01-20 16:53 ` Ben Dooks
2011-01-20 16:40 ` Ben Dooks
2011-01-20 16:40 ` Ben Dooks
2011-01-20 16:40 ` Ben Dooks
2011-01-11 10:39 `
2011-01-11 10:39 ` Uwe Kleine-König
2011-01-11 10:39 ` Uwe Kleine-König
2011-01-11 10:47 ` Russell King - ARM Linux
2011-01-11 10:47 ` Russell King - ARM Linux
2011-01-11 10:47 ` Russell King - ARM Linux
2011-01-11 10:56 `
2011-01-11 10:56 ` Uwe Kleine-König
2011-01-11 10:56 ` Uwe Kleine-König
2011-01-11 11:15 ` Richard Zhao
2011-01-11 11:15 ` Richard Zhao
2011-01-11 11:15 ` Richard Zhao
2011-01-20 17:02 ` Ben Dooks
2011-01-20 17:02 ` Ben Dooks
2011-01-20 17:02 ` Ben Dooks
2011-01-20 19:08 ` Russell King - ARM Linux
2011-01-20 19:08 ` Russell King - ARM Linux
2011-01-20 19:08 ` Russell King - ARM Linux
2011-01-21 0:09 ` Jassi Brar
2011-01-21 0:09 ` Jassi Brar
2011-01-21 0:09 ` Jassi Brar
2011-01-21 4:47 ` Jassi Brar
2011-01-21 4:47 ` Jassi Brar
2011-01-21 4:47 ` Jassi Brar
2011-01-21 9:39 ` Russell King - ARM Linux
2011-01-21 9:39 ` Russell King - ARM Linux
2011-01-21 9:39 ` Russell King - ARM Linux
2011-01-21 10:11 ` Jassi Brar
2011-01-21 10:11 ` Jassi Brar
2011-01-21 10:11 ` Jassi Brar
2011-01-22 4:08 ` Richard Zhao
2011-01-22 4:08 ` Richard Zhao
2011-01-22 4:08 ` Richard Zhao
2011-01-22 5:30 ` Jassi Brar
2011-01-22 5:30 ` Jassi Brar
2011-01-22 5:30 ` Jassi Brar
2011-01-21 7:16 ` Saravana Kannan
2011-01-21 7:16 ` Saravana Kannan
2011-01-21 7:16 ` Saravana Kannan
2011-01-21 9:40 ` Russell King - ARM Linux
2011-01-21 9:40 ` Russell King - ARM Linux
2011-01-21 9:40 ` Russell King - ARM Linux
2011-01-22 1:47 ` Saravana Kannan [this message]
2011-01-27 4:34 ` Saravana Kannan
2011-01-27 4:34 ` Saravana Kannan
2011-01-27 4:34 ` Saravana Kannan
2011-01-27 8:54 ` Russell King - ARM Linux
2011-01-27 8:54 ` Russell King - ARM Linux
2011-01-27 8:54 ` Russell King - ARM Linux
2011-01-27 20:30 ` Saravana Kannan
2011-01-27 20:30 ` Saravana Kannan
2011-01-27 20:30 ` Saravana Kannan
2011-01-27 20:43 ` Russell King - ARM Linux
2011-01-27 20:43 ` Russell King - ARM Linux
2011-01-27 20:43 ` Russell King - ARM Linux
2011-01-27 21:07 ` Alan Cox
2011-01-27 21:07 ` Alan Cox
2011-01-27 21:07 ` Alan Cox
2011-01-27 21:11 ` Russell King - ARM Linux
2011-01-27 21:11 ` Russell King - ARM Linux
2011-01-27 21:11 ` Russell King - ARM Linux
2011-01-27 21:15 ` Russell King - ARM Linux
2011-01-27 21:15 ` Russell King - ARM Linux
2011-01-27 21:15 ` Russell King - ARM Linux
2011-01-28 3:29 ` Saravana Kannan
2011-01-28 3:29 ` Saravana Kannan
2011-01-28 3:29 ` Saravana Kannan
2011-01-28 3:27 ` Saravana Kannan
2011-01-28 3:27 ` Saravana Kannan
2011-01-28 3:27 ` Saravana Kannan
2011-01-11 12:11 ` Jassi Brar
2011-01-11 12:23 ` Jassi Brar
2011-01-11 12:11 ` Jassi Brar
2011-01-12 2:56 ` Saravana Kannan
2011-01-12 2:56 ` Saravana Kannan
2011-01-12 2:56 ` Saravana Kannan
2011-01-12 9:03 ` Russell King - ARM Linux
2011-01-12 9:03 ` Russell King - ARM Linux
2011-01-12 9:03 ` Russell King - ARM Linux
2011-01-15 14:02 ` Christer Weinigel
2011-01-15 14:02 ` Christer Weinigel
2011-01-15 14:02 ` Christer Weinigel
2011-01-15 14:53 ` Russell King - ARM Linux
2011-01-15 14:53 ` Russell King - ARM Linux
2011-01-15 14:53 ` Russell King - ARM Linux
2011-01-15 15:03 `
2011-01-15 15:03 ` Uwe Kleine-König
2011-01-15 15:03 ` Uwe Kleine-König
2011-01-15 15:15 ` Russell King - ARM Linux
2011-01-15 15:15 ` Russell King - ARM Linux
2011-01-15 15:15 ` Russell King - ARM Linux
2011-01-15 16:03 `
2011-01-15 16:03 ` Uwe Kleine-König
2011-01-15 16:03 ` Uwe Kleine-König
2011-01-15 16:21 ` Russell King - ARM Linux
2011-01-15 16:21 ` Russell King - ARM Linux
2011-01-15 16:21 ` Russell King - ARM Linux
2011-01-15 16:31 `
2011-01-15 16:31 ` Uwe Kleine-König
2011-01-15 16:31 ` Uwe Kleine-König
2011-01-16 6:59 ` Grant Likely
2011-01-16 6:59 ` Grant Likely
2011-01-16 6:59 ` Grant Likely
2011-01-15 17:07 ` Christer Weinigel
2011-01-15 17:07 ` Christer Weinigel
2011-01-15 17:07 ` Christer Weinigel
2011-01-15 17:20 ` Russell King - ARM Linux
2011-01-15 17:20 ` Russell King - ARM Linux
2011-01-15 17:20 ` Russell King - ARM Linux
2011-01-15 17:44 ` Christer Weinigel
2011-01-15 17:44 ` Christer Weinigel
2011-01-15 17:44 ` Christer Weinigel
2011-01-15 20:30 ` Russell King - ARM Linux
2011-01-15 20:30 ` Russell King - ARM Linux
2011-01-15 20:30 ` Russell King - ARM Linux
2011-01-17 1:19 ` Jeremy Kerr
2011-01-17 1:19 ` Jeremy Kerr
2011-01-17 1:19 ` Jeremy Kerr
2011-01-17 1:27 ` Jeremy Kerr
2011-01-17 1:27 ` Jeremy Kerr
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