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authorYinghai Lu <yinghai@kernel.org>2011-02-24 14:46:24 +0100
committerTejun Heo <tj@kernel.org>2011-02-24 14:52:18 +0100
commitd1b19426b04787e48f2689923e28d37b488969b0 (patch)
treeef3391627ac6d033abaf6f249e2cd173aa8c8864 /arch/x86/mm/init.c
parent8bc1f91e1f0e977fb95b11d8fa686f5091888110 (diff)
x86: Rename e820_table_* to pgt_buf_*
e820_table_{start|end|top}, which are used to buffer page table allocation during early boot, are now derived from memblock and don't have much to do with e820. Change the names so that they reflect what they're used for. This patch doesn't introduce any behavior change. -v2: Ingo found that earlier patch "x86: Use early pre-allocated page table buffer top-down" caused crash on 32bit and needed to be dropped. This patch was updated to reflect the change. -tj: Updated commit description. Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'arch/x86/mm/init.c')
-rw-r--r--arch/x86/mm/init.c20
1 files changed, 10 insertions, 10 deletions
diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c
index b8054e087ead..286d289b039b 100644
--- a/arch/x86/mm/init.c
+++ b/arch/x86/mm/init.c
@@ -18,9 +18,9 @@
DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
-unsigned long __initdata e820_table_start;
-unsigned long __meminitdata e820_table_end;
-unsigned long __meminitdata e820_table_top;
+unsigned long __initdata pgt_buf_start;
+unsigned long __meminitdata pgt_buf_end;
+unsigned long __meminitdata pgt_buf_top;
int after_bootmem;
@@ -73,12 +73,12 @@ static void __init find_early_table_space(unsigned long end, int use_pse,
if (base == MEMBLOCK_ERROR)
panic("Cannot find space for the kernel page tables");
- e820_table_start = base >> PAGE_SHIFT;
- e820_table_end = e820_table_start;
- e820_table_top = e820_table_start + (tables >> PAGE_SHIFT);
+ pgt_buf_start = base >> PAGE_SHIFT;
+ pgt_buf_end = pgt_buf_start;
+ pgt_buf_top = pgt_buf_start + (tables >> PAGE_SHIFT);
printk(KERN_DEBUG "kernel direct mapping tables up to %lx @ %lx-%lx\n",
- end, e820_table_start << PAGE_SHIFT, e820_table_top << PAGE_SHIFT);
+ end, pgt_buf_start << PAGE_SHIFT, pgt_buf_top << PAGE_SHIFT);
}
struct map_range {
@@ -272,9 +272,9 @@ unsigned long __init_refok init_memory_mapping(unsigned long start,
__flush_tlb_all();
- if (!after_bootmem && e820_table_end > e820_table_start)
- memblock_x86_reserve_range(e820_table_start << PAGE_SHIFT,
- e820_table_end << PAGE_SHIFT, "PGTABLE");
+ if (!after_bootmem && pgt_buf_end > pgt_buf_start)
+ memblock_x86_reserve_range(pgt_buf_start << PAGE_SHIFT,
+ pgt_buf_end << PAGE_SHIFT, "PGTABLE");
if (!after_bootmem)
early_memtest(start, end);