2009-03-06 04:43:11 Regarding defragmentation in BF533

Hari Prasad (INDIA)

Message: 70526

Hi,

I need to malloc a memory chunk of 7MB in my app but the max size I can allocate is 2MB coz most of the free memory is fragmented. Is there any mechanism available which will defragment all the fragmented memory so that I can dynamically allocate a 7MB memory chunk?

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2009-03-06 04:49:25 Re: Regarding defragmentation in BF533

Mike Frysinger (UNITED STATES)

Message: 70528

the mechanism is called "virtual memory". since the Blackfin lacks a MMU, it cannot defragment things.

if you need large chunks, allocate them once at boot and never free them.

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2009-03-06 04:54:57 Regarding defragmentation in BF533

Michael Hennerich (GERMANY)

Message: 70529 > Is there any mechanism available which will defragment all the fragmented memory

But check this out:

docs.blackfin.uclinux.org/doku.php?id=linux-kernel:memory_allocation#silly_nommu_memory_tricks