[PATCH v5, part4 35/41] mm/SPARC: prepare for removing num_physpages and simplify mem_init()

From: Jiang Liu
Date: Wed May 08 2013 - 11:57:16 EST


Prepare for removing num_physpages and simplify mem_init().

Signed-off-by: Jiang Liu <jiang.liu@xxxxxxxxxx>
Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
Cc: Sam Ravnborg <sam@xxxxxxxxxxxx>
Cc: Yasuaki Ishimatsu <isimatu.yasuaki@xxxxxxxxxxxxxx>
Cc: Tang Chen <tangchen@xxxxxxxxxxxxxx>
Cc: sparclinux@xxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
---
arch/sparc/kernel/leon_smp.c | 3 ---
arch/sparc/mm/init_32.c | 33 +++------------------------------
arch/sparc/mm/init_64.c | 23 ++---------------------
3 files changed, 5 insertions(+), 54 deletions(-)

diff --git a/arch/sparc/kernel/leon_smp.c b/arch/sparc/kernel/leon_smp.c
index 6cfc1b0..d7aa524 100644
--- a/arch/sparc/kernel/leon_smp.c
+++ b/arch/sparc/kernel/leon_smp.c
@@ -254,15 +254,12 @@ void __init leon_smp_done(void)
/* Free unneeded trap tables */
if (!cpu_present(1)) {
free_reserved_page(virt_to_page(&trapbase_cpu1));
- num_physpages++;
}
if (!cpu_present(2)) {
free_reserved_page(virt_to_page(&trapbase_cpu2));
- num_physpages++;
}
if (!cpu_present(3)) {
free_reserved_page(virt_to_page(&trapbase_cpu3));
- num_physpages++;
}
/* Ok, they are spinning and ready to go. */
smp_processors_ready = 1;
diff --git a/arch/sparc/mm/init_32.c b/arch/sparc/mm/init_32.c
index e96afed..25d10cf 100644
--- a/arch/sparc/mm/init_32.c
+++ b/arch/sparc/mm/init_32.c
@@ -288,10 +288,6 @@ static void map_high_region(unsigned long start_pfn, unsigned long end_pfn)

void __init mem_init(void)
{
- int codepages = 0;
- int datapages = 0;
- int initpages = 0;
- int reservedpages = 0;
int i;

if (PKMAP_BASE+LAST_PKMAP*PAGE_SIZE >= FIXADDR_START) {
@@ -329,8 +325,6 @@ void __init mem_init(void)
unsigned long start_pfn = sp_banks[i].base_addr >> PAGE_SHIFT;
unsigned long end_pfn = (sp_banks[i].base_addr + sp_banks[i].num_bytes) >> PAGE_SHIFT;

- num_physpages += sp_banks[i].num_bytes >> PAGE_SHIFT;
-
if (end_pfn <= highstart_pfn)
continue;

@@ -340,39 +334,18 @@ void __init mem_init(void)
map_high_region(start_pfn, end_pfn);
}

- codepages = (((unsigned long) &_etext) - ((unsigned long)&_start));
- codepages = PAGE_ALIGN(codepages) >> PAGE_SHIFT;
- datapages = (((unsigned long) &_edata) - ((unsigned long)&_etext));
- datapages = PAGE_ALIGN(datapages) >> PAGE_SHIFT;
- initpages = (((unsigned long) &__init_end) - ((unsigned long) &__init_begin));
- initpages = PAGE_ALIGN(initpages) >> PAGE_SHIFT;
-
- /* Ignore memory holes for the purpose of counting reserved pages */
- for (i=0; i < max_low_pfn; i++)
- if (test_bit(i >> (20 - PAGE_SHIFT), sparc_valid_addr_bitmap)
- && PageReserved(pfn_to_page(i)))
- reservedpages++;
-
- printk(KERN_INFO "Memory: %luk/%luk available (%dk kernel code, %dk reserved, %dk data, %dk init, %ldk highmem)\n",
- nr_free_pages() << (PAGE_SHIFT-10),
- num_physpages << (PAGE_SHIFT - 10),
- codepages << (PAGE_SHIFT-10),
- reservedpages << (PAGE_SHIFT - 10),
- datapages << (PAGE_SHIFT-10),
- initpages << (PAGE_SHIFT-10),
- totalhigh_pages << (PAGE_SHIFT-10));
+ mem_init_print_info(NULL);
}

void free_initmem (void)
{
- num_physpages += free_initmem_default(POISON_FREE_INITMEM);
+ free_initmem_default(POISON_FREE_INITMEM);
}

#ifdef CONFIG_BLK_DEV_INITRD
void free_initrd_mem(unsigned long start, unsigned long end)
{
- num_physpages += free_reserved_area(start, end, POISON_FREE_INITMEM,
- "initrd");
+ free_reserved_area(start, end, POISON_FREE_INITMEM, "initrd");
}
#endif

diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
index c93c7c2..b0e6b8f 100644
--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64.c
@@ -2038,7 +2038,6 @@ static void __init register_page_bootmem_info(void)
}
void __init mem_init(void)
{
- unsigned long codepages, datapages, initpages;
unsigned long addr, last;

addr = PAGE_OFFSET + kern_base;
@@ -2056,11 +2055,6 @@ void __init mem_init(void)
register_page_bootmem_info();
free_all_bootmem();

- /* We subtract one to account for the mem_map_zero page
- * allocated below.
- */
- num_physpages = totalram_pages - 1;
-
/*
* Set up the zero page, mark it reserved, so that page count
* is not manipulated when freeing the page from user ptes.
@@ -2072,19 +2066,7 @@ void __init mem_init(void)
}
mark_page_reserved(mem_map_zero);

- codepages = (((unsigned long) _etext) - ((unsigned long) _start));
- codepages = PAGE_ALIGN(codepages) >> PAGE_SHIFT;
- datapages = (((unsigned long) _edata) - ((unsigned long) _etext));
- datapages = PAGE_ALIGN(datapages) >> PAGE_SHIFT;
- initpages = (((unsigned long) __init_end) - ((unsigned long) __init_begin));
- initpages = PAGE_ALIGN(initpages) >> PAGE_SHIFT;
-
- printk("Memory: %luk available (%ldk kernel code, %ldk data, %ldk init) [%016lx,%016lx]\n",
- nr_free_pages() << (PAGE_SHIFT-10),
- codepages << (PAGE_SHIFT-10),
- datapages << (PAGE_SHIFT-10),
- initpages << (PAGE_SHIFT-10),
- PAGE_OFFSET, (last_valid_pfn << PAGE_SHIFT));
+ mem_init_print_info(NULL);

if (tlb_type == cheetah || tlb_type == cheetah_plus)
cheetah_ecache_flush_init();
@@ -2124,8 +2106,7 @@ void free_initmem(void)
#ifdef CONFIG_BLK_DEV_INITRD
void free_initrd_mem(unsigned long start, unsigned long end)
{
- num_physpages += free_reserved_area(start, end, POISON_FREE_INITMEM,
- "initrd");
+ free_reserved_area(start, end, POISON_FREE_INITMEM, "initrd");
}
#endif

--
1.7.9.5

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