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Subject[PATCH -v2 07/13] x86, mm: Move down two calculate_table_space_size down.
Date
So later could make it call split_mem_range...

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
---
arch/x86/mm/init.c | 116 ++++++++++++++++++++++++++--------------------------
1 files changed, 58 insertions(+), 58 deletions(-)

diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c
index fcb44c5..a475d7f 100644
--- a/arch/x86/mm/init.c
+++ b/arch/x86/mm/init.c
@@ -37,64 +37,6 @@ struct map_range {

static int page_size_mask;

-static unsigned long __init calculate_table_space_size(unsigned long begin,
- unsigned long end)
-{
- unsigned long puds, pmds, ptes, tables;
-
- puds = (end + PUD_SIZE - 1) >> PUD_SHIFT;
- tables = roundup(puds * sizeof(pud_t), PAGE_SIZE);
-
- if (page_size_mask & (1 << PG_LEVEL_1G)) {
- unsigned long extra;
-
- extra = end - ((end>>PUD_SHIFT) << PUD_SHIFT);
- pmds = (extra + PMD_SIZE - 1) >> PMD_SHIFT;
- } else
- pmds = (end + PMD_SIZE - 1) >> PMD_SHIFT;
-
- tables += roundup(pmds * sizeof(pmd_t), PAGE_SIZE);
-
- if (page_size_mask & (1 << PG_LEVEL_2M)) {
- unsigned long extra;
-
- extra = end - ((end>>PMD_SHIFT) << PMD_SHIFT);
-#ifdef CONFIG_X86_32
- extra += PMD_SIZE;
-#endif
- /* The first 2/4M doesn't use large pages. */
- if (begin < PMD_SIZE)
- extra += (PMD_SIZE - begin) >> PAGE_SHIFT;
-
- ptes = (extra + PAGE_SIZE - 1) >> PAGE_SHIFT;
- } else
- ptes = (end + PAGE_SIZE - 1) >> PAGE_SHIFT;
-
- tables += roundup(ptes * sizeof(pte_t), PAGE_SIZE);
-
-#ifdef CONFIG_X86_32
- /* for fixmap */
- tables += roundup(__end_of_fixed_addresses * sizeof(pte_t), PAGE_SIZE);
-#endif
-
- return tables;
-}
-
-static void __init find_early_table_space(unsigned long start,
- unsigned long good_end,
- unsigned long tables)
-{
- phys_addr_t base;
-
- base = memblock_find_in_range(start, good_end, tables, PAGE_SIZE);
- if (!base)
- panic("Cannot find space for the kernel page tables");
-
- pgt_buf_start = base >> PAGE_SHIFT;
- pgt_buf_end = pgt_buf_start;
- pgt_buf_top = pgt_buf_start + (tables >> PAGE_SHIFT);
-}
-
static void __init probe_page_size_mask(void)
{
#if !defined(CONFIG_DEBUG_PAGEALLOC) && !defined(CONFIG_KMEMCHECK)
@@ -249,6 +191,64 @@ static int __meminit split_mem_range(struct map_range *mr, int nr_range,
return nr_range;
}

+static unsigned long __init calculate_table_space_size(unsigned long begin,
+ unsigned long end)
+{
+ unsigned long puds, pmds, ptes, tables;
+
+ puds = (end + PUD_SIZE - 1) >> PUD_SHIFT;
+ tables = roundup(puds * sizeof(pud_t), PAGE_SIZE);
+
+ if (page_size_mask & (1 << PG_LEVEL_1G)) {
+ unsigned long extra;
+
+ extra = end - ((end>>PUD_SHIFT) << PUD_SHIFT);
+ pmds = (extra + PMD_SIZE - 1) >> PMD_SHIFT;
+ } else
+ pmds = (end + PMD_SIZE - 1) >> PMD_SHIFT;
+
+ tables += roundup(pmds * sizeof(pmd_t), PAGE_SIZE);
+
+ if (page_size_mask & (1 << PG_LEVEL_2M)) {
+ unsigned long extra;
+
+ extra = end - ((end>>PMD_SHIFT) << PMD_SHIFT);
+#ifdef CONFIG_X86_32
+ extra += PMD_SIZE;
+#endif
+ /* The first 2/4M doesn't use large pages. */
+ if (begin < PMD_SIZE)
+ extra += (PMD_SIZE - begin) >> PAGE_SHIFT;
+
+ ptes = (extra + PAGE_SIZE - 1) >> PAGE_SHIFT;
+ } else
+ ptes = (end + PAGE_SIZE - 1) >> PAGE_SHIFT;
+
+ tables += roundup(ptes * sizeof(pte_t), PAGE_SIZE);
+
+#ifdef CONFIG_X86_32
+ /* for fixmap */
+ tables += roundup(__end_of_fixed_addresses * sizeof(pte_t), PAGE_SIZE);
+#endif
+
+ return tables;
+}
+
+static void __init find_early_table_space(unsigned long start,
+ unsigned long good_end,
+ unsigned long tables)
+{
+ phys_addr_t base;
+
+ base = memblock_find_in_range(start, good_end, tables, PAGE_SIZE);
+ if (!base)
+ panic("Cannot find space for the kernel page tables");
+
+ pgt_buf_start = base >> PAGE_SHIFT;
+ pgt_buf_end = pgt_buf_start;
+ pgt_buf_top = pgt_buf_start + (tables >> PAGE_SHIFT);
+}
+
/*
* Setup the direct mapping of the physical memory at PAGE_OFFSET.
* This runs before bootmem is initialized and gets pages directly from
--
1.7.7


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