Commit a9df9338 authored by Max Filippov's avatar Max Filippov
Browse files

xtensa: add FORCE_MAX_ZONEORDER to Kconfig 



Make maximal memory allocation order configurable, so that drivers could
allocate huge buffers when they need to.

Signed-off-by: default avatarMax Filippov <jcmvbkbc@gmail.com>
parent 6c33dc33

arch/xtensa/Kconfig

+14 −0
Original line number Diff line number Diff line
@@ -398,6 +398,20 @@ config SIMDISK1_FILENAME 


source "mm/Kconfig"



config FORCE_MAX_ZONEORDER

	int "Maximum zone order"

	default "11"

	help

	  The kernel memory allocator divides physically contiguous memory

	  blocks into "zones", where each zone is a power of two number of

	  pages.  This option selects the largest power of two that the kernel

	  keeps in the memory allocator.  If you need to allocate very large

	  blocks of physically contiguous memory, then you may need to

	  increase this value.



	  This config option is actually maximum order plus one. For example,

	  a value of 11 means that the largest free memory block is 2^10 pages.



source "drivers/pcmcia/Kconfig"



source "drivers/pci/hotplug/Kconfig"