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Message-Id: <1348991844-12285-4-git-send-email-yinghai@kernel.org>
Date: Sun, 30 Sep 2012 00:57:14 -0700
From: Yinghai Lu <yinghai@...nel.org>
To: Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...e.hu>,
"H. Peter Anvin" <hpa@...or.com>, Jacob Shin <jacob.shin@....com>,
Tejun Heo <tj@...nel.org>
Cc: linux-kernel@...r.kernel.org, Yinghai Lu <yinghai@...nel.org>
Subject: [PATCH 03/13] x86, mm: Move init_memory_mapping calling out of setup.c
Now init_memory_mapping is called two times, later will call more time for
more ram ranges.
Could put all related init_mem calling together.
Signed-off-by: Yinghai Lu <yinghai@...nel.org>
Reviewed-by: Pekka Enberg <penberg@...nel.org>
---
arch/x86/include/asm/init.h | 1 -
arch/x86/include/asm/pgtable.h | 2 +-
arch/x86/kernel/setup.c | 13 +------------
arch/x86/mm/init.c | 19 ++++++++++++++++++-
4 files changed, 20 insertions(+), 15 deletions(-)
diff --git a/arch/x86/include/asm/init.h b/arch/x86/include/asm/init.h
index adcc0ae..4f13998 100644
--- a/arch/x86/include/asm/init.h
+++ b/arch/x86/include/asm/init.h
@@ -12,7 +12,6 @@ kernel_physical_mapping_init(unsigned long start,
unsigned long end,
unsigned long page_size_mask);
-
extern unsigned long __initdata pgt_buf_start;
extern unsigned long __meminitdata pgt_buf_end;
extern unsigned long __meminitdata pgt_buf_top;
diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h
index c6f5779..52d40a1 100644
--- a/arch/x86/include/asm/pgtable.h
+++ b/arch/x86/include/asm/pgtable.h
@@ -598,7 +598,7 @@ static inline int pgd_none(pgd_t pgd)
#ifndef __ASSEMBLY__
extern int direct_gbpages;
-void probe_page_size_mask(void);
+void init_mem_mapping(void);
/* local pte updates need not use xchg for locking */
static inline pte_t native_local_ptep_get_and_clear(pte_t *ptep)
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index 20581d7..249384a 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -912,20 +912,9 @@ void __init setup_arch(char **cmdline_p)
setup_real_mode();
init_gbpages();
- probe_page_size_mask();
- /* max_pfn_mapped is updated here */
- max_low_pfn_mapped = init_memory_mapping(0, max_low_pfn<<PAGE_SHIFT);
- max_pfn_mapped = max_low_pfn_mapped;
+ init_mem_mapping();
-#ifdef CONFIG_X86_64
- if (max_pfn > max_low_pfn) {
- max_pfn_mapped = init_memory_mapping(1UL<<32,
- max_pfn<<PAGE_SHIFT);
- /* can we preseve max_low_pfn ?*/
- max_low_pfn = max_pfn;
- }
-#endif
memblock.current_limit = get_max_mapped();
dma_contiguous_reserve(0);
diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c
index 818b881..9f69180 100644
--- a/arch/x86/mm/init.c
+++ b/arch/x86/mm/init.c
@@ -92,7 +92,7 @@ static void __init find_early_table_space(struct map_range *mr,
(pgt_buf_top << PAGE_SHIFT) - 1);
}
-void probe_page_size_mask(void)
+static void __init probe_page_size_mask(void)
{
#if !defined(CONFIG_DEBUG_PAGEALLOC) && !defined(CONFIG_KMEMCHECK)
/*
@@ -312,6 +312,23 @@ unsigned long __init_refok init_memory_mapping(unsigned long start,
return ret >> PAGE_SHIFT;
}
+void __init init_mem_mapping(void)
+{
+ probe_page_size_mask();
+
+ /* max_pfn_mapped is updated here */
+ max_low_pfn_mapped = init_memory_mapping(0, max_low_pfn<<PAGE_SHIFT);
+ max_pfn_mapped = max_low_pfn_mapped;
+
+#ifdef CONFIG_X86_64
+ if (max_pfn > max_low_pfn) {
+ max_pfn_mapped = init_memory_mapping(1UL<<32,
+ max_pfn<<PAGE_SHIFT);
+ /* can we preseve max_low_pfn ?*/
+ max_low_pfn = max_pfn;
+ }
+#endif
+}
/*
* devmem_is_allowed() checks to see if /dev/mem access to a certain address
--
1.7.7
--
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