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-rw-r--r--include/linux/memblock.h165
1 files changed, 151 insertions, 14 deletions
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index 2acdd046df2d..aee299a6aa76 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -2,7 +2,6 @@
#define _LINUX_MEMBLOCK_H
#ifdef __KERNEL__
-#ifdef CONFIG_HAVE_MEMBLOCK
/*
* Logical memory blocks.
*
@@ -16,6 +15,19 @@
#include <linux/init.h>
#include <linux/mm.h>
+#include <asm/dma.h>
+
+extern unsigned long max_low_pfn;
+extern unsigned long min_low_pfn;
+
+/*
+ * highest page
+ */
+extern unsigned long max_pfn;
+/*
+ * highest possible page
+ */
+extern unsigned long long max_possible_pfn;
#define INIT_MEMBLOCK_REGIONS 128
#define INIT_PHYSMEM_REGIONS 4
@@ -120,6 +132,10 @@ int memblock_mark_nomap(phys_addr_t base, phys_addr_t size);
int memblock_clear_nomap(phys_addr_t base, phys_addr_t size);
enum memblock_flags choose_memblock_flags(void);
+unsigned long memblock_free_all(void);
+void reset_node_managed_pages(pg_data_t *pgdat);
+void reset_all_zones_managed_pages(void);
+
/* Low level functions */
int memblock_add_range(struct memblock_type *type,
phys_addr_t base, phys_addr_t size,
@@ -301,10 +317,116 @@ static inline int memblock_get_region_node(const struct memblock_region *r)
}
#endif /* CONFIG_HAVE_MEMBLOCK_NODE_MAP */
-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);
+/* Flags for memblock allocation APIs */
+#define MEMBLOCK_ALLOC_ANYWHERE (~(phys_addr_t)0)
+#define MEMBLOCK_ALLOC_ACCESSIBLE 0
+
+/* We are using top down, so it is safe to use 0 here */
+#define MEMBLOCK_LOW_LIMIT 0
+
+#ifndef ARCH_LOW_ADDRESS_LIMIT
+#define ARCH_LOW_ADDRESS_LIMIT 0xffffffffUL
+#endif
+
+phys_addr_t memblock_phys_alloc_nid(phys_addr_t size, phys_addr_t align, int nid);
+phys_addr_t memblock_phys_alloc_try_nid(phys_addr_t size, phys_addr_t align, int nid);
+
+phys_addr_t memblock_phys_alloc(phys_addr_t size, phys_addr_t align);
+
+void *memblock_alloc_try_nid_raw(phys_addr_t size, phys_addr_t align,
+ phys_addr_t min_addr, phys_addr_t max_addr,
+ int nid);
+void *memblock_alloc_try_nid_nopanic(phys_addr_t size, phys_addr_t align,
+ phys_addr_t min_addr, phys_addr_t max_addr,
+ int nid);
+void *memblock_alloc_try_nid(phys_addr_t size, phys_addr_t align,
+ phys_addr_t min_addr, phys_addr_t max_addr,
+ int nid);
+
+static inline void * __init memblock_alloc(phys_addr_t size, phys_addr_t align)
+{
+ return memblock_alloc_try_nid(size, align, MEMBLOCK_LOW_LIMIT,
+ MEMBLOCK_ALLOC_ACCESSIBLE, NUMA_NO_NODE);
+}
+
+static inline void * __init memblock_alloc_raw(phys_addr_t size,
+ phys_addr_t align)
+{
+ return memblock_alloc_try_nid_raw(size, align, MEMBLOCK_LOW_LIMIT,
+ MEMBLOCK_ALLOC_ACCESSIBLE,
+ NUMA_NO_NODE);
+}
+
+static inline void * __init memblock_alloc_from(phys_addr_t size,
+ phys_addr_t align,
+ phys_addr_t min_addr)
+{
+ return memblock_alloc_try_nid(size, align, min_addr,
+ MEMBLOCK_ALLOC_ACCESSIBLE, NUMA_NO_NODE);
+}
+
+static inline void * __init memblock_alloc_nopanic(phys_addr_t size,
+ phys_addr_t align)
+{
+ return memblock_alloc_try_nid_nopanic(size, align, MEMBLOCK_LOW_LIMIT,
+ MEMBLOCK_ALLOC_ACCESSIBLE,
+ NUMA_NO_NODE);
+}
+
+static inline void * __init memblock_alloc_low(phys_addr_t size,
+ phys_addr_t align)
+{
+ return memblock_alloc_try_nid(size, align, MEMBLOCK_LOW_LIMIT,
+ ARCH_LOW_ADDRESS_LIMIT, NUMA_NO_NODE);
+}
+static inline void * __init memblock_alloc_low_nopanic(phys_addr_t size,
+ phys_addr_t align)
+{
+ return memblock_alloc_try_nid_nopanic(size, align, MEMBLOCK_LOW_LIMIT,
+ ARCH_LOW_ADDRESS_LIMIT,
+ NUMA_NO_NODE);
+}
+
+static inline void * __init memblock_alloc_from_nopanic(phys_addr_t size,
+ phys_addr_t align,
+ phys_addr_t min_addr)
+{
+ return memblock_alloc_try_nid_nopanic(size, align, min_addr,
+ MEMBLOCK_ALLOC_ACCESSIBLE,
+ NUMA_NO_NODE);
+}
+
+static inline void * __init memblock_alloc_node(phys_addr_t size,
+ phys_addr_t align, int nid)
+{
+ return memblock_alloc_try_nid(size, align, MEMBLOCK_LOW_LIMIT,
+ MEMBLOCK_ALLOC_ACCESSIBLE, nid);
+}
+
+static inline void * __init memblock_alloc_node_nopanic(phys_addr_t size,
+ int nid)
+{
+ return memblock_alloc_try_nid_nopanic(size, SMP_CACHE_BYTES,
+ MEMBLOCK_LOW_LIMIT,
+ MEMBLOCK_ALLOC_ACCESSIBLE, nid);
+}
+
+static inline void __init memblock_free_early(phys_addr_t base,
+ phys_addr_t size)
+{
+ __memblock_free_early(base, size);
+}
+
+static inline void __init memblock_free_early_nid(phys_addr_t base,
+ phys_addr_t size, int nid)
+{
+ __memblock_free_early(base, size);
+}
-phys_addr_t memblock_alloc(phys_addr_t size, phys_addr_t align);
+static inline void __init memblock_free_late(phys_addr_t base, phys_addr_t size)
+{
+ __memblock_free_late(base, size);
+}
/*
* Set the allocation direction to bottom-up or top-down.
@@ -324,10 +446,6 @@ static inline bool memblock_bottom_up(void)
return memblock.bottom_up;
}
-/* Flags for memblock_alloc_base() amd __memblock_alloc_base() */
-#define MEMBLOCK_ALLOC_ANYWHERE (~(phys_addr_t)0)
-#define MEMBLOCK_ALLOC_ACCESSIBLE 0
-
phys_addr_t __init memblock_alloc_range(phys_addr_t size, phys_addr_t align,
phys_addr_t start, phys_addr_t end,
enum memblock_flags flags);
@@ -433,6 +551,31 @@ static inline unsigned long memblock_region_reserved_end_pfn(const struct memblo
i < memblock_type->cnt; \
i++, rgn = &memblock_type->regions[i])
+extern void *alloc_large_system_hash(const char *tablename,
+ unsigned long bucketsize,
+ unsigned long numentries,
+ int scale,
+ int flags,
+ unsigned int *_hash_shift,
+ unsigned int *_hash_mask,
+ unsigned long low_limit,
+ unsigned long high_limit);
+
+#define HASH_EARLY 0x00000001 /* Allocating during early boot? */
+#define HASH_SMALL 0x00000002 /* sub-page allocation allowed, min
+ * shift passed via *_hash_shift */
+#define HASH_ZERO 0x00000004 /* Zero allocated hash table */
+
+/* Only NUMA needs hash distribution. 64bit NUMA architectures have
+ * sufficient vmalloc space.
+ */
+#ifdef CONFIG_NUMA
+#define HASHDIST_DEFAULT IS_ENABLED(CONFIG_64BIT)
+extern int hashdist; /* Distribute hashes across NUMA nodes? */
+#else
+#define hashdist (0)
+#endif
+
#ifdef CONFIG_MEMTEST
extern void early_memtest(phys_addr_t start, phys_addr_t end);
#else
@@ -440,12 +583,6 @@ static inline void early_memtest(phys_addr_t start, phys_addr_t end)
{
}
#endif
-#else
-static inline phys_addr_t memblock_alloc(phys_addr_t size, phys_addr_t align)
-{
- return 0;
-}
-#endif /* CONFIG_HAVE_MEMBLOCK */
#endif /* __KERNEL__ */