[Crash-utility] [PATCH] Fix bugs in runq

[Dave Anderson]

----- Original Message -----

> 
> Right, I understand.  What I don't understand is the use of the "child"
> terminology.  If CONFIG_RT_GROUP_SCHED is configured, then the sched_rt_entity
> may reference a "group" run queue.  To me, it doesn't make sense to use
> the term "CHILD RT PRIO_ARRAY" in the header.  Wouldn't it make more sense to
> call it a "GROUP RT PRIO_ARRAY"?  Like this:
> 
> crash> runq
> CPU 0 RUNQUEUE: ffff880028216680
>   CURRENT: PID: 5125   TASK: ffff88010799d540  COMMAND: "sh"
>   RT PRIO_ARRAY: ffff880028216808
>      [  0] PID: 5136   TASK: ffff8801153cc040  COMMAND: "rtloop99"
>            GROUP RT PRIO_ARRAY: ffff88013b050000
>              [  0] PID: 5133   TASK: ffff88010799c080  COMMAND: "rtloop99"
>              [  1] PID: 5131   TASK: ffff880037922aa0  COMMAND: "rtloop98"
>              [ 98] PID: 5128   TASK: ffff88011bd87540  COMMAND: "rtloop1"
>                    PID: 5130   TASK: ffff8801396e7500  COMMAND: "rtloop1"
>                    PID: 5129   TASK: ffff88011bf5a080  COMMAND: "rtloop1"
>           PID: 6      TASK: ffff88013d7c6080  COMMAND: "watchdog/0"
>           PID: 3      TASK: ffff88013d7ba040  COMMAND: "migration/0"
>     [  1] PID: 5134   TASK: ffff8801153cd500  COMMAND: "rtloop98"
>           PID: 5135   TASK: ffff8801153ccaa0  COMMAND: "rtloop98"
>     ...
> 
> 
> CPU 1 RUNQUEUE: ffff880028296680
>   CURRENT: PID: 5086   TASK: ffff88006eecc040  COMMAND: "bash"
>   RT PRIO_ARRAY: ffff880028296808
>      [  0] PID: 5137   TASK: ffff880107b35540  COMMAND: "rtloop99"
>            PID: 10     TASK: ffff88013cc2cae0  COMMAND: "watchdog/1"
>            PID: 2852   TASK: ffff88013bd5aae0  COMMAND:
>            "rtkit-daemon"
>      [ 54] GROUP RT PRIO_ARRAY: ffff880138978000
>              [ 54] PID: 5132   TASK: ffff88006eecd500  COMMAND: "rtloop45"
>   CFS RB_ROOT: ffff880028296718
>   ...
> 

Another question re: your patch -- is it possible to have a "depth" greater
than 1?

Thanks,
  Dave