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mm/frv: prepare for removing num_physpages and simplify mem_init()

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Prepare for removing num_physpages and simplify mem_init().

Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jiang Liu
2013-07-03 15:03:55 -07:00
committed by Linus Torvalds
parent 4e422de996
commit 3f2b73c3c3
2 changed files with 21 additions and 41 deletions
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13
arch/frv/kernel/setup.c
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@@ -876,6 +876,7 @@ late_initcall(setup_arch_serial);
static void __init setup_linux_memory(void)
{
unsigned long bootmap_size, low_top_pfn, kstart, kend, high_mem;
unsigned long physpages;
kstart = (unsigned long) &__kernel_image_start - PAGE_OFFSET;
kend = (unsigned long) &__kernel_image_end - PAGE_OFFSET;
@@ -893,19 +894,19 @@ static void __init setup_linux_memory(void)
);
/* pass the memory that the kernel can immediately use over to the bootmem allocator */
max_mapnr = num_physpages = (memory_end - memory_start) >> PAGE_SHIFT;
max_mapnr = physpages = (memory_end - memory_start) >> PAGE_SHIFT;
low_top_pfn = (KERNEL_LOWMEM_END - KERNEL_LOWMEM_START) >> PAGE_SHIFT;
high_mem = 0;
if (num_physpages > low_top_pfn) {
if (physpages > low_top_pfn) {
#ifdef CONFIG_HIGHMEM
high_mem = num_physpages - low_top_pfn;
high_mem = physpages - low_top_pfn;
#else
max_mapnr = num_physpages = low_top_pfn;
max_mapnr = physpages = low_top_pfn;
#endif
}
else {
low_top_pfn = num_physpages;
low_top_pfn = physpages;
}
min_low_pfn = memory_start >> PAGE_SHIFT;
@@ -979,7 +980,7 @@ static void __init setup_uclinux_memory(void)
free_bootmem(memory_start, memory_end - memory_start);
high_memory = (void *) (memory_end & PAGE_MASK);
max_mapnr = num_physpages = ((unsigned long) high_memory - PAGE_OFFSET) >> PAGE_SHIFT;
max_mapnr = ((unsigned long) high_memory - PAGE_OFFSET) >> PAGE_SHIFT;
min_low_pfn = memory_start >> PAGE_SHIFT;
max_low_pfn = memory_end >> PAGE_SHIFT;