[PATCH 22/35] x86: move back find_e820_area to e820.c

[Yinghai Lu <yinghai@kernel.org>]

make early_res.c more clean, so later could move it to /kernel

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
---
 arch/x86/include/asm/e820.h      |    2 +
 arch/x86/include/asm/early_res.h |    4 +-
 arch/x86/kernel/e820.c           |   53 +++++++++++++++++++++++++++++++++++
 arch/x86/kernel/early_res.c      |   56 --------------------------------------
 4 files changed, 57 insertions(+), 58 deletions(-)

diff --git a/arch/x86/include/asm/e820.h b/arch/x86/include/asm/e820.h
index efad699..a8299e1 100644
--- a/arch/x86/include/asm/e820.h
+++ b/arch/x86/include/asm/e820.h
@@ -109,6 +109,8 @@ static inline void early_memtest(unsigned long start, unsigned long end)
 
 extern unsigned long end_user_pfn;
 
+extern u64 find_e820_area(u64 start, u64 end, u64 size, u64 align);
+extern u64 find_e820_area_size(u64 start, u64 *sizep, u64 align);
 extern u64 early_reserve_e820(u64 startt, u64 sizet, u64 align);
 #include <asm/early_res.h>
 
diff --git a/arch/x86/include/asm/early_res.h b/arch/x86/include/asm/early_res.h
index 2d43b16..5a4d2eb 100644
--- a/arch/x86/include/asm/early_res.h
+++ b/arch/x86/include/asm/early_res.h
@@ -2,8 +2,6 @@
 #define _ASM_X86_EARLY_RES_H
 #ifdef __KERNEL__
 
-extern u64 find_e820_area(u64 start, u64 end, u64 size, u64 align);
-extern u64 find_e820_area_size(u64 start, u64 *sizep, u64 align);
 extern void reserve_early(u64 start, u64 end, char *name);
 extern void reserve_early_overlap_ok(u64 start, u64 end, char *name);
 extern void free_early(u64 start, u64 end);
@@ -12,6 +10,8 @@ extern void early_res_to_bootmem(u64 start, u64 end);
 void reserve_early_without_check(u64 start, u64 end, char *name);
 u64 find_early_area(u64 ei_start, u64 ei_last, u64 start, u64 end,
 			 u64 size, u64 align);
+u64 find_early_area_size(u64 ei_start, u64 ei_last, u64 start,
+			 u64 *sizep, u64 align);
 #include <linux/range.h>
 int get_free_all_memory_range(struct range **rangep, int nodeid);
 
diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index 82db401..b4e512b 100644
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -723,6 +723,59 @@ core_initcall(e820_mark_nvs_memory);
 #endif
 
 /*
+ * Find a free area with specified alignment in a specific range.
+ */
+u64 __init find_e820_area(u64 start, u64 end, u64 size, u64 align)
+{
+	int i;
+
+	for (i = 0; i < e820.nr_map; i++) {
+		struct e820entry *ei = &e820.map[i];
+		u64 addr;
+		u64 ei_start, ei_last;
+
+		if (ei->type != E820_RAM)
+			continue;
+
+		ei_last = ei->addr + ei->size;
+		ei_start = ei->addr;
+		addr = find_early_area(ei_start, ei_last, start, end,
+					 size, align);
+
+		if (addr != -1ULL)
+			return addr;
+	}
+	return -1ULL;
+}
+
+/*
+ * Find next free range after *start
+ */
+u64 __init find_e820_area_size(u64 start, u64 *sizep, u64 align)
+{
+	int i;
+
+	for (i = 0; i < e820.nr_map; i++) {
+		struct e820entry *ei = &e820.map[i];
+		u64 addr;
+		u64 ei_start, ei_last;
+
+		if (ei->type != E820_RAM)
+			continue;
+
+		ei_last = ei->addr + ei->size;
+		ei_start = ei->addr;
+		addr = find_early_area_size(ei_start, ei_last, start,
+					 sizep, align);
+
+		if (addr != -1ULL)
+			return addr;
+	}
+
+	return -1ULL;
+}
+
+/*
  * pre allocated 4k and reserved it in e820
  */
 u64 __init early_reserve_e820(u64 startt, u64 sizet, u64 align)
diff --git a/arch/x86/kernel/early_res.c b/arch/x86/kernel/early_res.c
index aba02f2..d0a70cc 100644
--- a/arch/x86/kernel/early_res.c
+++ b/arch/x86/kernel/early_res.c
@@ -499,60 +499,4 @@ out:
 	return -1ULL;
 }
 
-/*
- * Find a free area with specified alignment in a specific range.
- */
-u64 __init find_e820_area(u64 start, u64 end, u64 size, u64 align)
-{
-	int i;
-
-	for (i = 0; i < e820.nr_map; i++) {
-		struct e820entry *ei = &e820.map[i];
-		u64 addr;
-		u64 ei_start, ei_last;
-
-		if (ei->type != E820_RAM)
-			continue;
-
-		ei_last = ei->addr + ei->size;
-		ei_start = ei->addr;
-		addr = find_early_area(ei_start, ei_last, start, end,
-					 size, align);
-
-		if (addr == -1ULL)
-			continue;
-
-		return addr;
-	}
-	return -1ULL;
-}
-
-/*
- * Find next free range after *start
- */
-u64 __init find_e820_area_size(u64 start, u64 *sizep, u64 align)
-{
-	int i;
-
-	for (i = 0; i < e820.nr_map; i++) {
-		struct e820entry *ei = &e820.map[i];
-		u64 addr;
-		u64 ei_start, ei_last;
-
-		if (ei->type != E820_RAM)
-			continue;
-
-		ei_last = ei->addr + ei->size;
-		ei_start = ei->addr;
-		addr = find_early_area_size(ei_start, ei_last, start,
-					 sizep, align);
-
-		if (addr == -1ULL)
-			continue;
-
-		return addr;
-	}
-
-	return -1ULL;
-}
 
-- 
1.6.4.2