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Commit 4d74539a authored by Liam Mark's avatar Liam Mark
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mm/Kconfig: support forcing allocators to return ZONE_DMA memory 



Add a new config item, CONFIG_FORCE_ALLOC_FROM_DMA_ZONE, which
can be used to optionally force certain allocators to always
return memory from ZONE_DMA.

This option helps ensure that clients who require ZONE_DMA
memory are always using ZONE_DMA memory.

Change-Id: Id2d36214307789f27aa775c2bef2dab5047c4ff0
Signed-off-by: default avatarLiam Mark <lmark@codeaurora.org>
parent 07179574

mm/Kconfig

+11 −1
Original line number Diff line number Diff line
@@ -641,3 +641,13 @@ config KSWAPD_CPU_AFFINITY_MASK 
	  the resultant bitmask.

	  For example to limit kswapd to the first 4 cores use the following:

	  CONFIG_KSWAPD_CPU_AFFINITY_MASK="f"



config FORCE_ALLOC_FROM_DMA_ZONE

	bool "Force certain memory allocators to always return ZONE_DMA memory"

	depends on ZONE_DMA

	help

	  Ensure certain memory allocators always return memory from ZONE_DMA.

	  This option helps ensure that clients who require ZONE_DMA memory are

	  always using ZONE_DMA memory.



	  If unsure, say "n".