linux-kernel - RE: [PATCH v4 0/5] Enabling the asynchronous threads for other phases

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Message-ID: <27240C0AC20F114CBF8149A2696CBE4A01C27D32@SHSMSX101.ccr.corp.intel.com>
Date:	Fri, 21 Feb 2014 01:38:45 +0000
From:	"Liu, Chuansheng" <chuansheng.liu@...el.com>
To:	"rjw@...ysocki.net" <rjw@...ysocki.net>,
	"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
	"Brown, Len" <len.brown@...el.com>, "pavel@....cz" <pavel@....cz>
CC:	"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"Li, Zhuangzhi" <zhuangzhi.li@...el.com>
Subject: RE: [PATCH v4 0/5] Enabling the asynchronous threads for other
 phases

Hello Rafael,

> -----Original Message-----
> From: Liu, Chuansheng
> Sent: Tuesday, February 18, 2014 10:29 AM
> To: rjw@...ysocki.net; gregkh@...uxfoundation.org; Brown, Len;
> pavel@....cz
> Cc: linux-pm@...r.kernel.org; linux-kernel@...r.kernel.org; Li, Zhuangzhi; Liu,
> Chuansheng
> Subject: [PATCH v4 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.
> 

After dig more about async threads, I found dpm_prepare/complete phases need
them also.

dpm_prepare()
  -- > call pci_pm_prepare() one by one
      -- > call pm_runtime_resume() one by one
        -- > call pci_set_power_state to D3HOT -- > D0

It will cause much time delaying due to d3_delay.
And I made one draft patch to implement the asynchronous threads for dpm_prepare(),
it is really save much time.

If you like it, I can prepare another series patches for dpm_prepare() and dpm_complete(),
thanks.

Best Regards,
--
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