From: rnayak@ti•com (Rajendra Nayak)
To: linux-arm-kernel@lists•infradead.org
Subject: [RFC 2/4] ARM: OMAP: PM: Get rid of Powerdomain book-keeping from cpuidle
Date: Thu, 26 Jul 2012 17:13:51 +0530 [thread overview]
Message-ID: <50112D77.2040302@ti.com> (raw)
In-Reply-To: <87obn3798o.fsf@ti.com>
On Thursday 26 July 2012 04:13 AM, Kevin Hilman wrote:
> Tero Kristo<t-kristo@ti•com> writes:
>
>> > On Fri, 2012-07-20 at 13:38 +0530, Rajendra Nayak wrote:
>>> >> On Friday 20 July 2012 12:55 PM, Shilimkar, Santosh wrote:
>>>> >> > On Fri, Jul 20, 2012 at 11:34 AM, Rajendra Nayak<rnayak@ti•com> wrote:
>>>>> >> >> pwrdm_pre_transition()/pwrdm_post_transition() have always been high latency
>>>>> >> >> operations done within cpuidle to do Powerdomain level book-keeping to know
>>>>> >> >> what state transitions for different Powerdomains have been triggered.
>>>>> >> >> This is also useful to do a restore-on-demand in some cases when we know
>>>>> >> >> the context for the given Powerdomain was lost etc.
>>>>> >> >>
>>>>> >> >> Now that we have definitive entry/exit points (thanks to the Powerdomain
>>>>> >> >> level usecounting) for Powerdomain transitions, these book-keeping functions
>>>>> >> >> can very well be moved from within CPUidle into pwrdm_clkdm_enable()/pwrdm_
>>>>> >> >> clkdm_disable() functions.
>>>>> >> >>
>>>>> >> >> Also rename _pwrdm_pre/post_transition_cb() to pwrdm_pre/post_transition()
>>>>> >> >> and get rid of the original ones which iterate over all powerdomains.
>>>>> >> >>
>>>>> >> >> Signed-off-by: Rajendra Nayak<rnayak@ti•com>
> This is excellent! Thanks for working on this.
>
> However, it needs a rebase against mainline though because I merged a
> set of optimizations[1] to this code already that only calls pre/post
> per-pwrdm.
Sure Kevin, I'll repost this series once 3.6-rc1 is out.
next prev parent reply other threads:[~2012-07-26 11:43 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-20 6:04 [RFC 0/4] OMAP Cpuidle/Suspend Cleanups Rajendra Nayak
2012-07-20 6:04 ` [RFC 1/4] ARM: OMAP3: cpuidle: Remove unused MPU OSWR support code Rajendra Nayak
2012-07-20 7:08 ` Shilimkar, Santosh
2012-07-20 18:25 ` Paul Walmsley
2012-07-23 7:10 ` Rajendra Nayak
2012-07-20 6:04 ` [RFC 2/4] ARM: OMAP: PM: Get rid of Powerdomain book-keeping from cpuidle Rajendra Nayak
2012-07-20 7:25 ` Shilimkar, Santosh
2012-07-20 8:08 ` Rajendra Nayak
2012-07-20 8:51 ` Tero Kristo
2012-07-20 11:54 ` Shilimkar, Santosh
2012-07-25 22:43 ` Kevin Hilman
2012-07-26 11:43 ` Rajendra Nayak [this message]
2012-07-26 12:42 ` Rajendra Nayak
2012-07-26 17:44 ` Kevin Hilman
2012-07-26 18:27 ` Tero Kristo
2012-07-26 20:50 ` Paul Walmsley
2012-07-27 6:46 ` Rajendra Nayak
2012-07-27 7:43 ` Rajendra Nayak
2012-07-20 6:04 ` [RFC 3/4] ARM: OMAP: powerdomain: Add .power_on/.power_down hooks for powerdomains Rajendra Nayak
2012-07-20 7:26 ` Shilimkar, Santosh
2012-07-20 6:04 ` [RFC 4/4] ARM: OMAP3: PM: Use .power_on/.power_down to clean omap_sram_idle Rajendra Nayak
2012-07-20 7:30 ` Shilimkar, Santosh
2012-07-20 8:59 ` [RFC 0/4] OMAP Cpuidle/Suspend Cleanups Tero Kristo
2012-07-20 9:03 ` Rajendra Nayak
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