Removing module

[Gedare Bloom]

Reine,

What version of RTEMS are you targeting?

I suppose you could use sparc-rtems-objdump with -d flag and inspect
the output to see where calls are made to the partition functions.

-Gedare

On Fri, Dec 5, 2014 at 9:24 AM, Reine <rg at irfu.se> wrote:
> Hello
>
> Thank you.
>
> What we are trying to do is minimize RTEMS because we have to qualify it for
> space use and if it is less code it will be much easier.
>
> I've removed everything easy..
>
>  --disable-networking
>  --disable-cxx
>  --disable-itron
>  --disable-tests
>  --disable-docs
>  --disable-posix
>  --disable-drvmgr
>
> We have also removed the filesystem and the consoles.
>
> Now I started to look at managers, what you say about unused code is removed
> seem to be
> true..but not entirely .. (or it is used)
>
> For instance we do not need the region manager or the partition manager but
> still there are symbols in the application code for the latter:
>
> sparc-rtems-readelf -a RPWI_FSW1 | grep region
>    247: 00000000     0 FILE    LOCAL  DEFAULT  ABS region.c
>    295: 00000000     0 FILE    LOCAL  DEFAULT  ABS regiondata.c
>
> juice at ubuntu:~/software/flight_software_dev$ sparc-rtems-readelf -a
> RPWI_FSW1 | grep partition
>    378: 4000f7e0   252 FUNC    GLOBAL DEFAULT    1 rtems_partition_get_buffe
>    948: 4000f0e0   284 FUNC    GLOBAL DEFAULT    1 rtems_partition_return_bu
>
>
> So it seems the region manager is not there but there are things for the
> partition manager in there.
>
> Does that mean RTEMS use the partition manager internally ?
>
>
> I guess what I need is ideas to trim RTEMS down...
>
>
> Reine
>
>
>
>
>
> On 04/12/14 17:11, Gedare Bloom wrote:
>>
>> Reine,
>>
>> I found your message on the build ml that is better sent to the users
>> mailing list, so I transcribed it here.
>>
>> With the master branch of RTEMS I don't believe setting MANAGERS makes
>> a difference. Unused code is no longer linked into the application
>> executable. What version of RTEMS are you using?
>>
>> If you look in the testsuites/ directory you can find many examples,
>> and searching for "MANAGERS" in the Makefiles can show you how to use
>> the option in the older RTEMS releases.
>>
>> -Gedare
>>
>> On Thu, Dec 4, 2014 at 11:09 AM, Gedare Bloom <gedare at gwu.edu> wrote:
>>>
>>> Hello
>>>
>>> It says in the RTEMS documentation that some managers are optional.
>>>
>>> I tried to remove the region manager from the kernel by modifying the
>>> file make/leaf.cfg see excerpt of top of file below:
>>>
>>> # make/leaf.cfg
>>> #
>>> #   Make(1) configuration file include'd by all leaf-node Makefiles
>>> #
>>>
>>> #
>>> # list of all known managers
>>> # This list is used, along with $(MANAGERS) (set by app makefile)
>>> #   to build the list of *not wanted* drivers.
>>> #
>>> # ref: target compiler config file for usage
>>> #
>>>
>>> #MANAGER_LIST=barrier dpmem event io msg mp part
>>> #MANAGER_LIST+=region sem signal timer rtmon ext
>>>
>>> MANAGER_LIST=barrier dpmem event io msg mp part
>>> MANAGER_LIST+=sem signal timer rtmon ext
>>>
>>>
>>> Then I compiled as usual including a bootstrap.
>>>
>>> However it did not seem to change anything?
>>>
>>> (The region symbols are still in the librtemscpu.a library)
>>>
>>>
>>> What am I doing wrong ? should is set MANAGERS somewhere ?
>>>
>>> Best regards
>>>
>>> Reine Gill
>
>