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Commit 46fa7281 authored by Zhenhua Huang's avatar Zhenhua Huang
Browse files

ARM: enable vmalloc saving 



For some targets that have less vmalloc space this can be increased by
enabling config ENABLE_VMALLOC_SAVING. With this config we can reclaim
virtual mappings which remains unused because of non hlos carveout
reservations in lowmem.

Select the default method of reclaiming virtual memory as vmalloc saving.

Change-Id: I249992871babe8c64c34d52ef43bbc7c81636d47
Signed-off-by: default avatarZhenhua Huang <zhenhuah@codeaurora.org>
parent 7c355036

arch/arm/Kconfig

+1 −1
Original line number Diff line number Diff line
@@ -1781,7 +1781,7 @@ source "mm/Kconfig" 


choice

	prompt "Virtual Memory Reclaim"

	default NO_VM_RECLAIM

	default ENABLE_VMALLOC_SAVING

	help

	  Select the method of reclaiming virtual memory

arch/arm/mm/mmu.c

+3 −2
Original line number Diff line number Diff line
@@ -1158,6 +1158,9 @@ void __init adjust_lowmem_bounds(void) 
	u64 vmalloc_limit;

	struct memblock_region *reg;

	phys_addr_t lowmem_limit = 0;

#ifdef CONFIG_ENABLE_VMALLOC_SAVING

	struct memblock_region *prev_reg = NULL;

#endif



	/*

	 * Let's use our own (unoptimized) equivalent of __pa() that is
@@ -1169,8 +1172,6 @@ void __init adjust_lowmem_bounds(void) 
	vmalloc_limit = (u64)(uintptr_t)vmalloc_min - PAGE_OFFSET + PHYS_OFFSET;



#ifdef CONFIG_ENABLE_VMALLOC_SAVING

	struct memblock_region *prev_reg = NULL;



	for_each_memblock(memory, reg) {

		if (prev_reg == NULL) {

			prev_reg = reg;