memblock: Add memblock_find_in_range()

This is a wrapper for memblock_find_base() using slightly different arguments (start,end instead of start,size for example) in order to make it easier to convert existing arch/x86 code. Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

memblock: Add memblock_find_in_range()
This is a wrapper for memblock_find_base() using slightly different arguments (start,end instead of start,size for example) in order to make it easier to convert existing arch/x86 code. Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Yinghai Lu · Benjamin Herrenschmidt
1 parent 10d0643988
Showing 2 changed files with 10 additions and 0 deletions Side-by-side Diff
include/linux/memblock.h
mm/memblock.c
@@ -47,6 +47,8 @@
 #define memblock_dbg(fmt, ...) \
 	if (memblock_debug) printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
  
+u64 memblock_find_in_range(u64 start, u64 end, u64 size, u64 align);
+
 extern void __init memblock_init(void);
 extern void __init memblock_analyze(void);
 extern long memblock_add(phys_addr_t base, phys_addr_t size);
@@ -162,6 +162,14 @@
 	return MEMBLOCK_ERROR;
 }
  
+/*
+ * Find a free area with specified alignment in a specific range.
+ */
+u64 __init_memblock memblock_find_in_range(u64 start, u64 end, u64 size, u64 align)
+{
+	return memblock_find_base(size, align, start, end);
+}
+
 static void __init_memblock memblock_remove_region(struct memblock_type *type, unsigned long r)
 {
 	unsigned long i;
...	...	@@ -47,6 +47,8 @@
47	47	#define memblock_dbg(fmt, ...) \
48	48	if (memblock_debug) printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
49	49
	50	+u64 memblock_find_in_range(u64 start, u64 end, u64 size, u64 align);
	51	+
50	52	extern void __init memblock_init(void);
51	53	extern void __init memblock_analyze(void);
52	54	extern long memblock_add(phys_addr_t base, phys_addr_t size);
...	...	@@ -162,6 +162,14 @@
162	162	return MEMBLOCK_ERROR;
163	163	}
164	164
	165	+/*
	166	+ * Find a free area with specified alignment in a specific range.
	167	+ */
	168	+u64 __init_memblock memblock_find_in_range(u64 start, u64 end, u64 size, u64 align)
	169	+{
	170	+ return memblock_find_base(size, align, start, end);
	171	+}
	172	+
165	173	static void __init_memblock memblock_remove_region(struct memblock_type *type, unsigned long r)
166	174	{
167	175	unsigned long i;