Minimum RAM for "libbsd"? Can't run in 8MB on "imxrt".

[Sebastian Huber]

On 21/06/2021 15:31, dufault at hda.com wrote:
> 
>> On Jun 21, 2021, at 08:52 , Sebastian Huber<sebastian.huber at embedded-brains.de>  wrote:
>>
>> What happens when you reduce the memory space for the mbufs to 4MiB? What is the "RTEMS work space"?
> By "RTEMS work space" I mean the space between bsp_section_work_begin and bsp_section_work_end, which I assume is handed over to the unified work space.  I also assume allocated "libbsd" data structures come from there.

Yes, the space between bsp_section_work_begin and bsp_section_work_end 
is used for the heap which is used by libbsd.

> 
> After reducing the space for the mbufs I still run out of RAM.  I've been patching rtems_bsd_allocator_domain_page_mbuf_size in the debugger for test.  I'll put it in at compile time but looking at the code that won't make a difference.

Which memory allocation fails? Is it in the libbsd initialization or 
afterwards?

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