ACPI mpsafe patch

From: Nate Lawson (nate_at_root.org)
Date: 06/15/04

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    Date: Tue, 15 Jun 2004 10:30:44 -0700 (PDT)
To: arch@freebsd.org, acpi@freebsd.org

    I've gone through this carefully and have tested it a lot and it appears
    ready for mainstream testing. I'm especially interested in SMP testing,
    with and without WITNESS. Run the following script on your system to test
    it (start 2 or 3 of these):

    #!/bin/sh
    sysctl hw.acpi.thermal.polling_rate=1
    sysctl hw.acpi.battery.info_expire=1
    while [ 1 ]; do
            apm
            sysctl hw.acpi
    done

    While that's going, use the system normally, suspend/resume, etc.

    The few parts that aren't done are acpi_video, acpi_asus, and
    acpi_toshiba. Once I finish these and a couple nits, I'll provide a final
    patch for testing as well as fix any problems found.

        http://www.root.org/~nate/freebsd/acpi_mpsafe.diff.gz

    Thanks,
    -Nate
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