linux-kernel - PM: resume devices took 9.176 seconds

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Date:	Mon, 06 Jul 2009 18:21:15 +0200
From:	Alexey Fisher <bug-track@...her-privat.net>
To:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Kernel Testers List <kernel-testers@...r.kernel.org>,
	David Brownell <dbrownell@...rs.sourceforge.net>,
	Ingo Molnar <mingo@...e.hu>, Pavel Machek <pavel@...e.cz>,
	"Rafael J. Wysocki" <rjw@...k.pl>
Subject: PM: resume devices took 9.176 seconds

Hallo all,
it testing a lot git tree especially suspend and resume. With my new 
Intel DG45ID board i get always this trace:

============================================
[  176.763922] PM: resume devices took 9.176 seconds
[  176.763924] ------------[ cut here ]------------
[  176.763930] WARNING: at kernel/power/suspend_test.c:52 
suspend_test_finish+0x7c/0x80()
[  176.763932] Hardware name:
[  176.763933] Component: resume devices
[  176.763934] Modules linked in: binfmt_misc kvm_intel kvm 
snd_hda_codec_intelhdmi snd_hda_codec_idt snd_hda_intel snd_hda_codec 
snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi 
snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device snd 
psmouse iTCO_wdt iTCO_vendor_support serio_raw e1000e soundcore 
snd_page_alloc
[  176.763952] Pid: 4180, comm: bash Not tainted 
2.6.31-rc1-25446-g1ae8c0a-dirty #3
[  176.763953] Call Trace:
[  176.763958]  [<ffffffff8104a8e8>] warn_slowpath_common+0x78/0xb0
[  176.763961]  [<ffffffff8104a97c>] warn_slowpath_fmt+0x3c/0x40
[  176.763964]  [<ffffffff8107ce7c>] suspend_test_finish+0x7c/0x80
[  176.763966]  [<ffffffff8107cac1>] suspend_devices_and_enter+0xb1/0x210
[  176.763969]  [<ffffffff8107cd4a>] enter_state+0x12a/0x150
[  176.763971]  [<ffffffff8107c2a1>] state_store+0x91/0x100
[  176.763974]  [<ffffffff8121b177>] kobj_attr_store+0x17/0x20
[  176.763978]  [<ffffffff8115a250>] sysfs_write_file+0xe0/0x160
[  176.763981]  [<ffffffff810f8468>] vfs_write+0xb8/0x1a0
[  176.763984]  [<ffffffff810f63f8>] ? filp_close+0x58/0x90
[  176.763987]  [<ffffffff810f8f1c>] sys_write+0x4c/0x80
[  176.763991]  [<ffffffff8100b66b>] system_call_fastpath+0x16/0x1b
[  176.763993] ---[ end trace 50ea4941e30c27fd ]---
[  176.766367] PM: Finishing wakeup.
[  176.766369] Restarting tasks ... done.
============================================================

this is related with the commit:
    commit 77437fd4e61f87cc94d9314baa5cbf50e3ccdf54
Author: David Brownell <dbrownell@...rs.sourceforge.net>
Date:   Wed Jul 23 21:28:33 2008 -0700

probobly it's depend  on this message:
[  173.076075] ata1: link is slow to respond, please be patient (ready=0)

so it's looks normal for this board and harddrive. I think it should be 
some way to change default TEST_SUSPEND_SECONDS by .config or 
kernel-parameter. I changed default settings to 10 in 
kernel/power/suspend_test.c but this is not the way it should be done.


Thenks
	Alexey
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