linux-kernel - RE: [PATCH 0/5] Enabling the asynchronous threads for other phases

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Date:	Tue, 21 Jan 2014 08:57:27 +0000
From:	"Li, Zhuangzhi" <zhuangzhi.li@...el.com>
To:	"Liu, Chuansheng" <chuansheng.liu@...el.com>,
	"rjw@...ysocki.net" <rjw@...ysocki.net>,
	"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
	"pavel@....cz" <pavel@....cz>, "Brown, Len" <len.brown@...el.com>
CC:	"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH 0/5] Enabling the asynchronous threads for other phases



> -----Original Message-----
> From: Liu, Chuansheng
> Sent: Monday, January 20, 2014 4:45 PM
> To: rjw@...ysocki.net; gregkh@...uxfoundation.org; pavel@....cz; Brown, Len
> Cc: linux-pm@...r.kernel.org; linux-kernel@...r.kernel.org; Liu, Chuansheng;
> Li, Zhuangzhi
> Subject: [PATCH 0/5] Enabling the asynchronous threads for other phases
> 
> Hello,
> 
> This patch series are for enabling the asynchronous threads for the phases
> resume_noirq, resume_early, suspend_noirq and suspend_late.
> 
> Just like commit 5af84b82701a and 97df8c12995, with async threads it will
> reduce the system suspending and resuming time significantly.
> 
> With these patches, in my test platform, it saved 80% time in resume_noirq
> phase.
> 
> Has done the suspend-resume stress test for a long time, please help to
> review.
> 
> Best Regards,
> 
> [PATCH 1/5] PM: Adding two flags for async suspend_noirq and
> [PATCH 2/5] PM: Enabling the asynchronous threads for resume_noirq
> [PATCH 3/5] PM: Enabling the asyncronous threads for resume_early
> [PATCH 4/5] PM: Enabling the asyncronous threads for suspend_noirq
> [PATCH 5/5] PM: Enabling the asyncronous threads for suspend_late

After applied the above five patches, there was no issue observed during 1000 cycles suspend/resume stress test on Baytrail platform.
Tested-by: lizhuangzhi <zhuangzhi.li@...el.com>
> 
>  drivers/base/power/main.c |  240
> ++++++++++++++++++++++++++++++++++++---------
>  include/linux/pm.h        |    2 +
>  2 files changed, 197 insertions(+), 45 deletions(-)

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