linux-kernel - Re: Re: [PATCH v4 0/3] devfreq: Add support for devices which can idle

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Date:	Fri, 05 Oct 2012 05:35:45 +0000 (GMT)
From:	MyungJoo Ham <myungjoo.ham@...sung.com>
To:	Rajagopal Venkat <rajagopal.venkat@...aro.org>
Cc:	"mturquette@...aro.org" <mturquette@...aro.org>,
	박경민 <kyungmin.park@...sung.com>,
	"rjw@...k.pl" <rjw@...k.pl>,
	"patches@...aro.org" <patches@...aro.org>,
	"linaro-dev@...ts.linaro.org" <linaro-dev@...ts.linaro.org>,
	"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: Re: [PATCH v4 0/3] devfreq: Add support for devices which can idle

> On 4 October 2012 18:06, MyungJoo Ham <myungjoo.ham@...sung.com> wrote:
> >> This patchset updates devfreq core to add support for devices
> >> which can idle. When device idleness is detected perhaps
> >> through runtime-pm, need some mechanism to suspend devfreq
> >> load monitoring and resume when device is back online.
> >>
> >> patch 1 introduce core design changes - per device work, decouple
> >> delayed work from core and event based interaction.
> >> patch 2 add devfreq suspend and resume apis.
> >> patch 3 add new sysfs attribute for governor predicted next target
> >> frequency and callback for current device frequency.
> >>
> >> The existing devfreq apis are kept intact. Two new apis
> >> devfreq_suspend_device() and devfreq_resume_device() are
> >> added to support suspend/resume of device devfreq.
> >
> > Could you please tell me which version you have rebased?
> >
> > It seems that the patchset has issues on applying over 3.6.
> > (tried at a0d271cbfed1dd50278c6b06bead3d00ba0a88f9)
> 
> These patches are rebased against Linus tree.
> 
> The 203b42f7317494ae5e5efc7be6fb7f29c927f102 commit, which
> renames INIT_DELAYED_WORK_DEFERRABLE to
> INIT_DEFERRABLE_WORK could be the reason for patchset
> not applying over 3.6.

Ok, I'll try and test over Linus' latest.

> 
> >
> >
> >>
> >> Changes since v1:
> >> - revised locking mechanism
> >> - added kerneldoc comments for load monitoring helper functions
> >> - fixed minor review comments
> >>
> >> Changes since v2:
> >> - added new helper function for polling interval update
> >> - handled work suspend/resume contention between devfreq driver
> >> and sysfs
> >>
> >> Changes since v3:
> >> - added additonal checks in suspend/resume to avoid invalid usage of apis
> >> - added check in devfreq_monitor_start, not to start monitoring when
> >> polling_ms is set to zero.
> >>
> >> --
> >> Rajagopal Venkat (3):
> >>   devfreq: Core updates to support devices which can idle
> >>   devfreq: Add suspend and resume apis
> >>   devfreq: Add current freq callback in device profile
> >>
> >>  Documentation/ABI/testing/sysfs-class-devfreq |  15 +-
> >>  drivers/devfreq/devfreq.c                     | 481 ++++++++++++--------------
> >>  drivers/devfreq/governor.h                    |  13 +
> >>  drivers/devfreq/governor_performance.c        |  16 +-
> >>  drivers/devfreq/governor_powersave.c          |  16 +-
> >>  drivers/devfreq/governor_simpleondemand.c     |  33 ++
> >>  drivers/devfreq/governor_userspace.c          |  23 +-
> >>  include/linux/devfreq.h                       |  49 +--
> >>  8 files changed, 353 insertions(+), 293 deletions(-)
> >>
> >> --
> >> 1.7.11.3
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> 
> 
> 
> -- 
> Regards,
> Rajagopal
> 
> 
> 
>        
>   
>          
>