From mboxrd@z Thu Jan  1 00:00:00 1970
From: Len Brown <lenb@kernel.org>
Subject: Re: [PATCH] PM: add statistics sysfs file for suspend to
	ram
Date: Thu, 04 Aug 2011 15:05:10 -0400 (EDT)
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To: "Liu, ShuoX" <shuox.liu@intel.com>
Cc: "Brown, Len" <len.brown@intel.com>, "linux-pm@lists.linux-foundation.org" <linux-pm@lists.linux-foundation.org>, "gregkh@suse.de" <gregkh@suse.de>
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> Record S3 failure time about each reason and the latest two failed
> devices' name in S3 progress.
> We can check it through /sys/power/suspend_stats.

these sound more like debugfs than sysfs things.

-Len Brown
Intel Open Source Technlogy Center