[lwip-devel] [bug #21433] Calling mem_free/pbuf_free from interrupt context isn't safe

[EVS Hardware Dpt]

Follow-up Comment #9, bug #21433 (project lwip):

>Hold on here, Simon is saying that using SYS_ARCH_PROTECT in mem_free is not
good because it takes too long to walk the heap. I'm failing to see where the
size of the heap (or number of allocations) is a factor. Maybe I'm just blind.
Simon, can you tell me where this dependency is? 

I believe he's talking about walking the heap finding a memory segment that
is big enough to allocate. The more we allocate, the more we must walk the
heap. I think plug holes can also be consuming.

Fred

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