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-rw-r--r--arch/x86/include/asm/setup.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/include/asm/setup.h b/arch/x86/include/asm/setup.h
index 05c6f6b11fd5..45454f3fa121 100644
--- a/arch/x86/include/asm/setup.h
+++ b/arch/x86/include/asm/setup.h
@@ -100,6 +100,10 @@ extern struct boot_params boot_params;
*/
#define LOWMEMSIZE() (0x9f000)
+/* exceedingly early brk-like allocator */
+extern unsigned long _brk_end;
+void *extend_brk(size_t size, size_t align);
+
#ifdef __i386__
void __init i386_start_kernel(void);