Commit-ID: 6de6cb442e76bbaf2e685150be8ddac0f237a59c
Gitweb: http://git.kernel.org/tip/6de6cb442e76bbaf2e685150be8ddac0f237a59c
Author: Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx>
AuthorDate: Fri, 27 Feb 2009 13:35:45 -0800
Commit: H. Peter Anvin <hpa@xxxxxxxxx>
CommitDate: Sat, 14 Mar 2009 17:23:47 -0700
x86: use brk allocation for DMI
Impact: use new interface instead of previous ad hoc implementation
Use extend_brk() to allocate memory for DMI rather than having an
ad-hoc allocator.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx>
Signed-off-by: H. Peter Anvin <hpa@xxxxxxxxx>
---
arch/x86/include/asm/dmi.h | 14 ++------------
arch/x86/kernel/setup.c | 6 ------
2 files changed, 2 insertions(+), 18 deletions(-)
diff --git a/arch/x86/include/asm/dmi.h b/arch/x86/include/asm/dmi.h
index bc68212..aa32f7e 100644
--- a/arch/x86/include/asm/dmi.h
+++ b/arch/x86/include/asm/dmi.h
@@ -2,21 +2,11 @@
#define _ASM_X86_DMI_H
#include <asm/io.h>
+#include <asm/setup.h>
-#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.
- Allocate data in an BSS array. */
static inline void *dmi_alloc(unsigned len)
{
- int idx = dmi_alloc_index;
- if ((dmi_alloc_index + len) > DMI_MAX_DATA)
- return NULL;
- dmi_alloc_index += len;
- return dmi_alloc_data + idx;
+ return extend_brk(len, sizeof(int));
}
/* Use early IO mappings for DMI because it's initialized early */
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index 3ac2aa7..e894f36 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -216,12 +216,6 @@ unsigned long mmu_cr4_features = X86_CR4_PAE;
int bootloader_type;
/*
- * Early DMI memory
- */
-int dmi_alloc_index;
-char dmi_alloc_data[DMI_MAX_DATA];
-
-/*
* Setup options
*/
struct screen_info screen_info;
--
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