um: Create asm/sections.h

arch/um/kernel/dyn.lds.S and arch/um/kernel/uml.lds.S define some UML-specific symbols. These symbols are used in the kernel part of UML with extern declarations. Move these declarations to a new header, asm/sections.h, like other architectures do. Signed-off-by: Nicolas Iooss <[email protected]> Signed-off-by: Richard Weinberger <[email protected]>
josf · May 31, 2015 · d5f20be · d5f20be
1 parent ba155e2
commit d5f20be
Show file tree

Hide file tree

Showing 5 changed files with 11 additions and 7 deletions.
diff --git a/arch/um/include/asm/Kbuild b/arch/um/include/asm/Kbuild
@@ -22,7 +22,6 @@ generic-y += pci.h
 generic-y += percpu.h
 generic-y += preempt.h
 generic-y += scatterlist.h
-generic-y += sections.h
 generic-y += switch_to.h
 generic-y += topology.h
 generic-y += trace_clock.h

diff --git a/arch/um/include/asm/sections.h b/arch/um/include/asm/sections.h
@@ -0,0 +1,9 @@
+#ifndef __UM_SECTIONS_H
+#define __UM_SECTIONS_H
+
+#include <asm-generic/sections.h>
+
+extern char __binary_start;
+extern int __syscall_stub_start, __syscall_stub_end;
+
+#endif
diff --git a/arch/um/kernel/physmem.c b/arch/um/kernel/physmem.c
@@ -8,6 +8,7 @@
 #include <linux/mm.h>
 #include <linux/pfn.h>
 #include <asm/page.h>
+#include <asm/sections.h>
 #include <as-layout.h>
 #include <init.h>
 #include <kern.h>
@@ -55,8 +56,6 @@ void map_memory(unsigned long virt, unsigned long phys, unsigned long len,
 	}
 }
 
-extern int __syscall_stub_start;
-
 /**
  * setup_physmem() - Setup physical memory for UML
  * @start:	Start address of the physical kernel memory,

diff --git a/arch/um/kernel/skas/mmu.c b/arch/um/kernel/skas/mmu.c
@@ -8,12 +8,11 @@
 #include <linux/slab.h>
 #include <asm/pgalloc.h>
 #include <asm/pgtable.h>
+#include <asm/sections.h>
 #include <as-layout.h>
 #include <os.h>
 #include <skas.h>
 
-extern int __syscall_stub_start;
-
 static int init_stub_pte(struct mm_struct *mm, unsigned long proc,
 			 unsigned long kernel)
 {

diff --git a/arch/um/kernel/um_arch.c b/arch/um/kernel/um_arch.c
@@ -248,8 +248,6 @@ EXPORT_SYMBOL(end_iomem);
 
 #define MIN_VMALLOC (32 * 1024 * 1024)
 
-extern char __binary_start;
-
 int __init linux_main(int argc, char **argv)
 {
 	unsigned long avail, diff;