| Date | Mon, 18 Mar 2013 20:57:35 -0400 (EDT) | From | Parag Warudkar <> | Subject | Re: [ 00/48] 3.4.37-stable review |
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On Mon, 18 Mar 2013, Shuah Khan wrote:
> I am seeing the following warning after suspend and resume: > > [ 665.841331] Component: resume devices, time: 10628
[snip]
> [ 665.841446] Pid: 2686, comm: bash Not tainted 3.4.37-rc1+ #13 > [ 665.841450] Call Trace: > [ 665.841463] [<ffffffff8105136f>] warn_slowpath_common+0x7f/0xc0 > [ 665.841471] [<ffffffff81051466>] warn_slowpath_fmt+0x46/0x50 > [ 665.841478] [<ffffffff81097086>] suspend_test_finish+0x86/0x90 > [ 665.841484] [<ffffffff81096c2e>] suspend_devices_and_enter+0x16e/0x330 > [ 665.841491] [<ffffffff81096f7f>] pm_suspend+0x18f/0x1f0
It is coming from kernel/power/suspend_test.c:53 -
/* Warning on suspend means the RTC alarm period needs to be * larger -- the system was sooo slooowwww to suspend that the * alarm (should have) fired before the system went to sleep! * * Warning on either suspend or resume also means the system * has some performance issues. The stack dump of a WARN_ON * is more likely to get the right attention than a printk... */ WARN(msec > (TEST_SUSPEND_SECONDS * 1000), "Component: %s, time: %u\n", label, msec);
That just means your system is slow to suspend/resume. I've seen the same many times on my older machines - you can likely ignore it.
--Parag
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