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Commit 108c8433 authored by Sudarshan Rajagopalan's avatar Sudarshan Rajagopalan Committed by Swathi Sridhar
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arm64: Make section size configurable for memory hotplug 



Currently On arm64, memory section size is hard-coded to 1G.
Make this configurable if memory-hotplug is enabled, to support
more finer granularity for hotplug-able memory.

Change-Id: Id889f93537df8ae7e72094b552cff735d31048e6
Signed-off-by: default avatarSudarshan Rajagopalan <sudaraja@codeaurora.org>
[swatsrid@codeaurora.org: Fix merge conflicts]
Signed-off-by: default avatarSwathi Sridhar <swatsrid@codeaurora.org>
parent da65cea8

arch/arm64/Kconfig

+12 −0
Original line number Diff line number Diff line
@@ -262,6 +262,18 @@ config HAVE_GENERIC_GUP 
config SMP

	def_bool y



config HOTPLUG_SIZE_BITS

	int "Memory hotplug block size(29 => 512MB 30 => 1GB)"

	depends on SPARSEMEM

	depends on MEMORY_HOTPLUG

	depends on QCOM_MEM_OFFLINE

	default 30

	help

	 Selects granularity of hotplug memory. Block

	 size for memory hotplug is represent as a power

	 of 2.

	 If unsure, stick with default value.



config KERNEL_MODE_NEON

	def_bool y

arch/arm64/include/asm/sparsemem.h

+4 −0
Original line number Diff line number Diff line
@@ -18,7 +18,11 @@ 


#ifdef CONFIG_SPARSEMEM

#define MAX_PHYSMEM_BITS	CONFIG_ARM64_PA_BITS

#ifndef CONFIG_MEMORY_HOTPLUG

#define SECTION_SIZE_BITS	30

#else

#define SECTION_SIZE_BITS	CONFIG_HOTPLUG_SIZE_BITS

#endif

#endif



#endif