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Date: Thu, 31 May 2007 11:43:31 -0700
From: Yinghai Lu <Yinghai.Lu@....COM>
To: Andrew Morton <akpm@...ux-foundation.org>, Andi Kleen <ak@...e.de>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: [PATCH] x86_64: change early_ioremap to static
[PATCH] x86_64: change early_ioremap to static
only dmi_scan_machine==>dmi_present==>dmi_table==>dmi_ioremap uses
early_ioremap outside of mm/init.c
dmi_scan_machine is called after init_memory_mappings, and could use
ioremap instead.
Signed-off-by: Yinghai Lu <yinghai.lu@....com>
diff --git a/arch/x86_64/mm/init.c b/arch/x86_64/mm/init.c
index 1336da8..8e3d14c 100644
--- a/arch/x86_64/mm/init.c
+++ b/arch/x86_64/mm/init.c
@@ -174,37 +174,7 @@ __set_fixmap (enum fixed_addresses idx, unsigned long phys, pgprot_t prot)
unsigned long __meminitdata table_start, table_end;
-static __meminit void *alloc_low_page(unsigned long *phys)
-{
- unsigned long pfn = table_end++;
- void *adr;
-
- if (after_bootmem) {
- adr = (void *)get_zeroed_page(GFP_ATOMIC);
- *phys = __pa(adr);
- return adr;
- }
-
- if (pfn >= end_pfn)
- panic("alloc_low_page: ran out of memory");
-
- adr = early_ioremap(pfn * PAGE_SIZE, PAGE_SIZE);
- memset(adr, 0, PAGE_SIZE);
- *phys = pfn * PAGE_SIZE;
- return adr;
-}
-
-static __meminit void unmap_low_page(void *adr)
-{
-
- if (after_bootmem)
- return;
-
- early_iounmap(adr, PAGE_SIZE);
-}
-
-/* Must run before zap_low_mappings */
-__meminit void *early_ioremap(unsigned long addr, unsigned long size)
+static __meminit void *early_ioremap(unsigned long addr, unsigned long size)
{
unsigned long vaddr;
pmd_t *pmd, *last_pmd;
@@ -233,7 +203,7 @@ __meminit void *early_ioremap(unsigned long addr, unsigned long size)
}
/* To avoid virtual aliases later */
-__meminit void early_iounmap(void *addr, unsigned long size)
+static __meminit void early_iounmap(void *addr, unsigned long size)
{
unsigned long vaddr;
pmd_t *pmd;
@@ -247,6 +217,35 @@ __meminit void early_iounmap(void *addr, unsigned long size)
__flush_tlb();
}
+static __meminit void *alloc_low_page(unsigned long *phys)
+{
+ unsigned long pfn = table_end++;
+ void *adr;
+
+ if (after_bootmem) {
+ adr = (void *)get_zeroed_page(GFP_ATOMIC);
+ *phys = __pa(adr);
+ return adr;
+ }
+
+ if (pfn >= end_pfn)
+ panic("alloc_low_page: ran out of memory");
+
+ adr = early_ioremap(pfn * PAGE_SIZE, PAGE_SIZE);
+ memset(adr, 0, PAGE_SIZE);
+ *phys = pfn * PAGE_SIZE;
+ return adr;
+}
+
+static __meminit void unmap_low_page(void *adr)
+{
+
+ if (after_bootmem)
+ return;
+
+ early_iounmap(adr, PAGE_SIZE);
+}
+
static void __meminit
phys_pmd_init(pmd_t *pmd_page, unsigned long address, unsigned long end)
{
diff --git a/include/asm-x86_64/dmi.h b/include/asm-x86_64/dmi.h
index 93b2b15..fc7b576 100644
--- a/include/asm-x86_64/dmi.h
+++ b/include/asm-x86_64/dmi.h
@@ -3,15 +3,12 @@
#include <asm/io.h>
-extern void *dmi_ioremap(unsigned long addr, unsigned long size);
-extern void dmi_iounmap(void *addr, unsigned long size);
-
#define DMI_MAX_DATA 2048
extern int dmi_alloc_index;
extern char dmi_alloc_data[DMI_MAX_DATA];
-/* This is so early that there is no good way to allocate dynamic memory.
+/* This is so early that there is no good way to allocate dynamic memory.
Allocate data in an BSS array. */
static inline void *dmi_alloc(unsigned len)
{
@@ -21,7 +18,7 @@ static inline void *dmi_alloc(unsigned len)
return dmi_alloc_data + idx;
}
-#define dmi_ioremap early_ioremap
-#define dmi_iounmap early_iounmap
+#define dmi_ioremap ioremap
+#define dmi_iounmap(x,l) iounmap(x)
#endif
diff --git a/include/asm-x86_64/io.h b/include/asm-x86_64/io.h
index de2cd9a..0898bdc 100644
--- a/include/asm-x86_64/io.h
+++ b/include/asm-x86_64/io.h
@@ -134,9 +134,6 @@ static inline void __iomem * ioremap (unsigned long offset, unsigned long size)
return __ioremap(offset, size, 0);
}
-extern void *early_ioremap(unsigned long addr, unsigned long size);
-extern void early_iounmap(void *addr, unsigned long size);
-
/*
* This one maps high address device memory and turns off caching for that area.
* it's useful if some control registers are in such an area and write combining
-
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