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Subject[PATCH 21/35] x86: move back find_e820_area to e820.c
make early_res.c more clean, so later could move it to /kernel

Signed-off: 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 | 57 ++++++++++++++++++++++++++++++++++++++
arch/x86/kernel/early_res.c | 56 -------------------------------------
4 files changed, 61 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 096bb31..86cbbd0 100644
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -723,6 +723,63 @@ 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)
+ 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;
+}
+
+/*
* 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


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