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| author | Gregory Nutt <gnutt@nuttx.org> | 2013-06-10 11:57:37 -0600 |
|---|---|---|
| committer | Gregory Nutt <gnutt@nuttx.org> | 2013-06-10 11:57:37 -0600 |
| commit | 72f47272ac7ff5b035b1a9ece54fa1305f03250c (patch) | |
| tree | aa54bed7cda6a6c52bf9e00a930784d423bd486a /nuttx/mm/Kconfig | |
| parent | 8ee7a2303393edda37f23ac77ce07115a2c7064e (diff) | |
| download | nuttx-72f47272ac7ff5b035b1a9ece54fa1305f03250c.tar.gz nuttx-72f47272ac7ff5b035b1a9ece54fa1305f03250c.tar.bz2 nuttx-72f47272ac7ff5b035b1a9ece54fa1305f03250c.zip | |
Beginning updates of SAM3U header files o include support for the SAM4S: WDT, SUPC, EEFC, MATRIX, and PMC
Diffstat (limited to 'nuttx/mm/Kconfig')
| -rw-r--r-- | nuttx/mm/Kconfig | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/nuttx/mm/Kconfig b/nuttx/mm/Kconfig index 960c979e8..20d83b5db 100644 --- a/nuttx/mm/Kconfig +++ b/nuttx/mm/Kconfig @@ -56,7 +56,14 @@ config MM_SMALL MM_SMALL can be defined so that those MCUs will also benefit from the smaller, 16-bit-based allocation overhead. - NOTE: If MM_MULTIHEAP is selected, then this applies to all heaps. + WARNING: This selection will also change the alignment of allocated + memory. For example, on ARM memory will have 8-byte alignment by + default. If MM_SMALL is selected, then allocated memory will have + only 4-byte alignment. This may be important on some platforms where + 64-bit data is in allocated structures and 8-byte alignment is required. + + NOTE: If MM_MULTIHEAP is selected, then this selection applies to all + heaps. config MM_REGIONS int "Number of memory regions" |