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Commit 406ce433 authored by Susheel Khiani's avatar Susheel Khiani
Browse files

msm: Update the kernel log messages 



After reclaiming vmalloc and adjusting lowmem, the two
regions are no longer contiguous. Update the messages
printed during bootup to list all regions corresponding
to low memory and vmalloc respectively.

Change-Id: Ib3e25b530b3dfbd1f9796cdc580fb79da484e850
Signed-off-by: default avatarSusheel Khiani <skhiani@codeaurora.org>
parent d64e398f

arch/arm/mm/init.c

+73 −24
Original line number Diff line number Diff line
@@ -513,6 +513,54 @@ static void __init free_highpages(void) 
#endif

}



#define MLK(b, t) (b), (t), (((t) - (b)) >> 10)

#define MLM(b, t) (b), (t), (((t) - (b)) >> 20)

#define MLK_ROUNDUP(b, t) (b), (t), (DIV_ROUND_UP(((t) - (b)), SZ_1K))



#ifdef CONFIG_ENABLE_VMALLOC_SAVING

static void print_vmalloc_lowmem_info(void)

{

	struct memblock_region *reg, *prev_reg = NULL;



	pr_notice(

		"	   vmalloc : 0x%08lx - 0x%08lx   (%4ld MB)\n",

		MLM((unsigned long)high_memory, VMALLOC_END));



	for_each_memblock_rev(memory, reg) {

		phys_addr_t start_phys = reg->base;

		phys_addr_t end_phys = reg->base + reg->size;



		if (start_phys > arm_lowmem_limit)

			continue;



		if (end_phys > arm_lowmem_limit)

			end_phys = arm_lowmem_limit;



		if (prev_reg == NULL) {

			prev_reg = reg;



			pr_notice(

			"	   lowmem  : 0x%08lx - 0x%08lx   (%4ld MB)\n",

			MLM((unsigned long)__va(start_phys),

			(unsigned long)__va(end_phys)));



			continue;

		}



		pr_notice(

		"	   vmalloc : 0x%08lx - 0x%08lx   (%4ld MB)\n",

		MLM((unsigned long)__va(end_phys),

		(unsigned long)__va(prev_reg->base)));





		pr_notice(

		"	   lowmem  : 0x%08lx - 0x%08lx   (%4ld MB)\n",

		MLM((unsigned long)__va(start_phys),

		(unsigned long)__va(end_phys)));

	}

}

#endif



/*

 * mem_init() marks the free areas in the mem_map and tells us how much

 * memory is free.  This is done after various parts of the system have
@@ -541,39 +589,40 @@ void __init mem_init(void) 


	mem_init_print_info(NULL);



#define MLK(b, t) b, t, ((t) - (b)) >> 10

#define MLM(b, t) b, t, ((t) - (b)) >> 20

#define MLK_ROUNDUP(b, t) b, t, DIV_ROUND_UP(((t) - (b)), SZ_1K)



	printk(KERN_NOTICE "Virtual kernel memory layout:\n"

			"    vector  : 0x%08lx - 0x%08lx   (%4ld kB)\n"

#ifdef CONFIG_HAVE_TCM

			"    DTCM    : 0x%08lx - 0x%08lx   (%4ld kB)\n"

			"    ITCM    : 0x%08lx - 0x%08lx   (%4ld kB)\n"

#endif

			"    fixmap  : 0x%08lx - 0x%08lx   (%4ld kB)\n"

			"    vmalloc : 0x%08lx - 0x%08lx   (%4ld MB)\n"

			"    lowmem  : 0x%08lx - 0x%08lx   (%4ld MB)\n"

#ifdef CONFIG_HIGHMEM

			"    pkmap   : 0x%08lx - 0x%08lx   (%4ld MB)\n"

#endif

#ifdef CONFIG_MODULES

			"    modules : 0x%08lx - 0x%08lx   (%4ld MB)\n"

#endif

			"      .text : 0x%p" " - 0x%p" "   (%4td kB)\n"

			"      .init : 0x%p" " - 0x%p" "   (%4td kB)\n"

			"      .data : 0x%p" " - 0x%p" "   (%4td kB)\n"

			"       .bss : 0x%p" " - 0x%p" "   (%4td kB)\n",



			"    fixmap  : 0x%08lx - 0x%08lx   (%4ld kB)\n",

			MLK(UL(CONFIG_VECTORS_BASE), UL(CONFIG_VECTORS_BASE) +

				(PAGE_SIZE)),

#ifdef CONFIG_HAVE_TCM

			MLK(DTCM_OFFSET, (unsigned long) dtcm_end),

			MLK(ITCM_OFFSET, (unsigned long) itcm_end),

#endif

			MLK(FIXADDR_START, FIXADDR_END),

			MLK(FIXADDR_START, FIXADDR_END));

#ifdef CONFIG_ENABLE_VMALLOC_SAVING

	print_vmalloc_lowmem_info();

#else

	printk(KERN_NOTICE

		   "    vmalloc : 0x%08lx - 0x%08lx   (%4ld MB)\n"

		   "    lowmem  : 0x%08lx - 0x%08lx   (%4ld MB)\n",

			MLM(VMALLOC_START, VMALLOC_END),

			MLM(PAGE_OFFSET, (unsigned long)high_memory),

			MLM(PAGE_OFFSET, (unsigned long)high_memory));

#endif

	printk(KERN_NOTICE

#ifdef CONFIG_HIGHMEM

		   "    pkmap   : 0x%08lx - 0x%08lx   (%4ld MB)\n"

#endif

#ifdef CONFIG_MODULES

		   "    modules : 0x%08lx - 0x%08lx   (%4ld MB)\n"

#endif

		   "      .text : 0x%p" " - 0x%p" "   (%4d kB)\n"

		   "      .init : 0x%p" " - 0x%p" "   (%4d kB)\n"

		   "      .data : 0x%p" " - 0x%p" "   (%4d kB)\n"

		   "       .bss : 0x%p" " - 0x%p" "   (%4d kB)\n",

#ifdef CONFIG_HIGHMEM

			MLM(PKMAP_BASE, (PKMAP_BASE) + (LAST_PKMAP) *

				(PAGE_SIZE)),
@@ -587,10 +636,6 @@ void __init mem_init(void) 
			MLK_ROUNDUP(_sdata, _edata),

			MLK_ROUNDUP(__bss_start, __bss_stop));



#undef MLK

#undef MLM

#undef MLK_ROUNDUP



	/*

	 * Check boundaries twice: Some fundamental inconsistencies can

	 * be detected at build time already.
@@ -616,6 +661,10 @@ void __init mem_init(void) 
	}

}



#undef MLK

#undef MLM

#undef MLK_ROUNDUP



#ifdef CONFIG_ARM_KERNMEM_PERMS

struct section_perm {

	unsigned long start;

include/linux/memblock.h

+5 −0
Original line number Diff line number Diff line
@@ -357,6 +357,11 @@ static inline unsigned long memblock_region_reserved_end_pfn(const struct memblo 
	     region < (memblock.memblock_type.regions + memblock.memblock_type.cnt);	\

	     region++)



#define for_each_memblock_rev(memblock_type, region)	\

	for (region = memblock.memblock_type.regions + \

			memblock.memblock_type.cnt - 1;	\

	     region >= memblock.memblock_type.regions;	\

	     region--)



#ifdef CONFIG_ARCH_DISCARD_MEMBLOCK

#define __init_memblock __meminit