summaryrefslogtreecommitdiff
path: root/include/linux/memblock.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/linux/memblock.h')
-rw-r--r--include/linux/memblock.h24
1 files changed, 22 insertions, 2 deletions
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index cd7606b71e5a..a6bb10235148 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -46,6 +46,8 @@ extern int memblock_debug;
#define memblock_dbg(fmt, ...) \
if (memblock_debug) printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
+phys_addr_t memblock_find_in_range_node(phys_addr_t start, phys_addr_t end,
+ phys_addr_t size, phys_addr_t align, int nid);
phys_addr_t memblock_find_in_range(phys_addr_t start, phys_addr_t end,
phys_addr_t size, phys_addr_t align);
int memblock_free_reserved_regions(void);
@@ -98,6 +100,26 @@ void __next_free_mem_range(u64 *idx, int nid, phys_addr_t *out_start,
i != (u64)ULLONG_MAX; \
__next_free_mem_range(&i, nid, p_start, p_end, p_nid))
+void __next_free_mem_range_rev(u64 *idx, int nid, phys_addr_t *out_start,
+ phys_addr_t *out_end, int *out_nid);
+
+/**
+ * for_each_free_mem_range_reverse - rev-iterate through free memblock areas
+ * @i: u64 used as loop variable
+ * @nid: node selector, %MAX_NUMNODES for all nodes
+ * @p_start: ptr to phys_addr_t for start address of the range, can be %NULL
+ * @p_end: ptr to phys_addr_t for end address of the range, can be %NULL
+ * @p_nid: ptr to int for nid of the range, can be %NULL
+ *
+ * Walks over free (memory && !reserved) areas of memblock in reverse
+ * order. Available as soon as memblock is initialized.
+ */
+#define for_each_free_mem_range_reverse(i, nid, p_start, p_end, p_nid) \
+ for (i = (u64)ULLONG_MAX, \
+ __next_free_mem_range_rev(&i, nid, p_start, p_end, p_nid); \
+ i != (u64)ULLONG_MAX; \
+ __next_free_mem_range_rev(&i, nid, p_start, p_end, p_nid))
+
#ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP
int memblock_set_node(phys_addr_t base, phys_addr_t size, int nid);
@@ -121,8 +143,6 @@ static inline int memblock_get_region_node(const struct memblock_region *r)
}
#endif /* CONFIG_HAVE_MEMBLOCK_NODE_MAP */
-phys_addr_t memblock_find_in_range_node(phys_addr_t start, phys_addr_t end,
- phys_addr_t size, phys_addr_t align, int nid);
phys_addr_t memblock_alloc_nid(phys_addr_t size, phys_addr_t align, int nid);
phys_addr_t memblock_alloc_try_nid(phys_addr_t size, phys_addr_t align, int nid);