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    SubjectRe: [RFC][PATCH 1/3] Suspend: Testing facility
    Date
    Hi,

    On Saturday, 3 November 2007 19:23, Pavel Machek wrote:
    > Hi!
    >
    > > Introduce /sys/power/pm_test_level attribute allowing one to test the suspend
    > > core code. Namely, writing a number (1-5) to this file causes the suspend code
    > > to work in one of the test modes defined as follows:
    > >
    > > 5 - test the freezing of processes
    > > 4 - test the freezing of processes and suspending of devices
    > > 3 - test the freezing of processes, suspending of devices and platform global
    > > control methods
    > > 2 - test the freezing of processes, suspending of devices, platform global
    > > control methods and the disabling of nonboot CPUs
    > > 1 - test the freezing of processes, suspending of devices, platform global
    > > control methods, the disabling of nonboot CPUs and suspending of
    > > platform/system devices
    > >
    > > Then, if a suspend is started by normal means, the suspend core will perform
    > > its normal operations up to the point indicated by the test level. Next, it
    > > will wait for 5 seconds and carry out the resume operations needed to transition
    > > the system back to the fully functional state.
    > >
    > > Writing 0 to /sys/power/pm_test_level turns the testing off. The current test
    > > level may be read from /sys/power/pm_test_level .
    > >
    > > Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
    >
    > ACK on whole series, but... should we also remove the old debugging
    > infrastructure? (Or did I just miss it?)

    Well, I don't want to remove it just yet, but it's going to be deprecated.

    Also, after Johannes' remark I thought it wouldn't be a good idea to export the
    bare test levels to the user. For this reason I reworked the patches to use
    strings instead of numbers for the test setting (the attribute is now called
    "pm_test" and is used in a similar way to "disk").

    I'll post the reworked series as soon as I update the changelogs and docs.

    Greetings,
    Rafael
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