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Date:      Wed, 22 Apr 2009 16:03:44 +0300
From:      Andriy Gapon <avg@icyb.net.ua>
To:        Nate Lawson <nate@root.org>
Cc:        sclark46@earthlink.net, freebsd-acpi@freebsd.org, Ian Smith <smithi@nimnet.asn.au>
Subject:   Re: 6.x acpi powerbutton
Message-ID:  <49EF15B0.10402@icyb.net.ua>
In-Reply-To: <49EE1863.1000306@root.org>
References:  <49DE1F8B.2080400@earthlink.net> <49DE2E6D.5050001@icyb.net.ua> <49DE596E.2050406@earthlink.net> <49DEFF53.1040306@icyb.net.ua> <49DF7A1C.90009@root.org> <20090418043432.O34434@sola.nimnet.asn.au> <49E8D824.1000001@root.org> <20090417200726.GG3014@deviant.kiev.zoral.com.ua> <49E8E6E3.40304@root.org> <49EDFAED.4030606@icyb.net.ua> <49EE1863.1000306@root.org>

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on 21/04/2009 22:02 Nate Lawson said the following:
> 
> I don't think that's what they're asking for. The normal shutdown
> process creates log entries, even if destined for poweroff. For example,
> shutdown -p will log before powering off. acpi_ReqSleepState() can come
> through /dev/apm, sysctl, etc. as well as the power button handler.

Yes, the normal shutdown does log. But the other types of Sx state changes do not
seem to get logged anywhere, so I think that that log message might still be useful.

> They are interested in the initiator of the event, the button itself. So
> you'd be adding a printf to the power button handler, "power button
> pressed". Then the normal shutdown messages would be logged but they
> would know the reason. Remember that with sysctl, you can configure
> different events to button mappings. So the power button could be used
> to initiate a suspend, for example.

Yes, I agree.
Which place do you think is the best for this log - acpi sleep event handler
(acpi_system_eventhandler_sleep) or individual sleep event triggers (power button
sleep button, lid)?

-- 
Andriy Gapon



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