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msm: Add low power mode for dynamic memory managment.

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Add Low Power mode TAG.
Add new API's for mem lowpower modes.
Create new sys file for mem low power modes.
Set SECTION_SIZE_BITS to 28.
Change NPA_MEMORY_NODE_NAME to "/mem/apps/ddr_dpd".
Fix NPA node create function to do atomic_inc()
in atomic_dec_and_test() failure case.

Change-Id: Ia5cb18b99338c43165d5401e619c773cd8d6b3f6
Signed-off-by: Larry Bassel <lbassel@codeaurora.org>
(cherry picked from commit b054046e708f8c5b044e76c2df6f72fd607be558)

Conflicts:

	arch/arm/include/asm/setup.h
	arch/arm/kernel/setup.c
	arch/arm/mach-msm/include/mach/memory.h
	arch/arm/mach-msm/memory.c
	drivers/base/memory.c
	include/linux/memory_hotplug.h
This commit is contained in:
Larry Bassel 2010-06-10 16:34:51 -07:00 committed by Stephen Boyd
parent 8a57f81411
commit e188e3e5cb
2 changed files with 14 additions and 2 deletions
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5
include/linux/memory_hotplug.h
View file

@ -12,6 +12,9 @@ struct pglist_data;
struct mem_section;
struct memory_block;
extern unsigned long movable_reserved_start, movable_reserved_size;
extern unsigned long low_power_memory_start, low_power_memory_size;
#ifdef CONFIG_MEMORY_HOTPLUG
/*
@ -263,3 +266,5 @@ extern int physical_remove_memory(u64 start, u64 size);
extern int arch_physical_remove_memory(u64 start, u64 size);
extern int physical_low_power_memory(u64 start, u64 size);
extern int arch_physical_low_power_memory(u64 start, u64 size);
extern int physical_active_memory(u64 start, u64 size);
extern int arch_physical_active_memory(u64 start, u64 size);

11
mm/memory_hotplug.c
View file

@ -1178,7 +1178,6 @@ int __ref physical_remove_memory(u64 start, u64 size)
res = kzalloc(sizeof(struct resource), GFP_KERNEL);
BUG_ON(!res);
/* call arch's memory hotremove */
ret = arch_physical_remove_memory(start, size);
if (ret) {
kfree(res);
@ -1199,11 +1198,19 @@ int __ref physical_remove_memory(u64 start, u64 size)
}
EXPORT_SYMBOL_GPL(physical_remove_memory);
int __ref physical_active_memory(u64 start, u64 size)
{
int ret;
ret = arch_physical_active_memory(start, size);
return ret;
}
EXPORT_SYMBOL_GPL(physical_active_memory);
int __ref physical_low_power_memory(u64 start, u64 size)
{
int ret;
/* call arch's memory low power routine */
ret = arch_physical_low_power_memory(start, size);
return ret;
}