sched_mc test scenario

[Daniel Lezcano]

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Hi all,

here is a few test scenario I would like to add to the pm-qa.

test_01: the sched_mc feature is enabled in the kernel

    check the presence of the 'sched_mc_power_savings' file

test_02: the topology is implemented in the kernel

    check the value of the physical_package_id file is different from "-1"

test_03: the topology files are present

    check the presence of the topology files for each cpu:
     * core_id
     * core_siblings
     * core_siblings_list
     * physical_package_id
     * thread_siblings
     * thread_siblings_list

test_04: the change are effective for sched_mc

    check the ability to change the value [0-2] of the
'sched_mc_power_savings' file

test_05: the topology is consistent

    check the consistency of the topology files
    * for each package:
      * count the cores
            -> the number of cores is 2 ^ (nr_cores - 1)
            -> all core ids are between 0 and nr_cores - 1


Concerning the functional tests, I need some hints :)

On the architecture we have, that will be difficult to verify sched_mc
works as expected.
If I understood correctly, in order to test that, we should have a
dual Cortex-A9 to check a program with two processes eating a lot of
cpu cycles will be bounded in the same socket_id when
sched_mc_power_savings=2.
The other processor staying idle or not running any of these
processes, right ? AFAIK, there is no such hardware, no ?


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