memblock: Change u64 to phys_addr_t

Let's not waste space and cycles on archs that don't support >32-bit
physical address space.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

2 files changed, 84 insertions, 82 deletions

diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index 71b8edc6ede8..b65045a4ed08 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -21,19 +21,19 @@
 #define MAX_MEMBLOCK_REGIONS 128
 
 struct memblock_region {
-        u64 base;
-        u64 size;
+        phys_addr_t base;
+        phys_addr_t size;
 };
 
 struct memblock_type {
         unsigned long cnt;
-        u64 size;
+        phys_addr_t size;
         struct memblock_region regions[MAX_MEMBLOCK_REGIONS+1];
 };
 
 struct memblock {
         unsigned long debug;
-        u64 current_limit;
+        phys_addr_t current_limit;
         struct memblock_type memory;
         struct memblock_type reserved;
 };
@@ -42,34 +42,34 @@ extern struct memblock memblock;
 
 extern void __init memblock_init(void);
 extern void __init memblock_analyze(void);
-extern long memblock_add(u64 base, u64 size);
-extern long memblock_remove(u64 base, u64 size);
-extern long __init memblock_free(u64 base, u64 size);
-extern long __init memblock_reserve(u64 base, u64 size);
+extern long memblock_add(phys_addr_t base, phys_addr_t size);
+extern long memblock_remove(phys_addr_t base, phys_addr_t size);
+extern long __init memblock_free(phys_addr_t base, phys_addr_t size);
+extern long __init memblock_reserve(phys_addr_t base, phys_addr_t size);
 
-extern u64 __init memblock_alloc_nid(u64 size, u64 align, int nid);
-extern u64 __init memblock_alloc(u64 size, u64 align);
+extern phys_addr_t __init memblock_alloc_nid(phys_addr_t size, phys_addr_t align, int nid);
+extern phys_addr_t __init memblock_alloc(phys_addr_t size, phys_addr_t align);
 
 /* Flags for memblock_alloc_base() amd __memblock_alloc_base() */
-#define MEMBLOCK_ALLOC_ANYWHERE (~(u64)0)
+#define MEMBLOCK_ALLOC_ANYWHERE (~(phys_addr_t)0)
 #define MEMBLOCK_ALLOC_ACCESSIBLE       0
 
-extern u64 __init memblock_alloc_base(u64 size,
-                u64, u64 max_addr);
-extern u64 __init __memblock_alloc_base(u64 size,
-                u64 align, u64 max_addr);
-extern u64 __init memblock_phys_mem_size(void);
-extern u64 memblock_end_of_DRAM(void);
-extern void __init memblock_enforce_memory_limit(u64 memory_limit);
-extern int memblock_is_memory(u64 addr);
-extern int memblock_is_region_memory(u64 base, u64 size);
-extern int __init memblock_is_reserved(u64 addr);
-extern int memblock_is_region_reserved(u64 base, u64 size);
+extern phys_addr_t __init memblock_alloc_base(phys_addr_t size,
+                phys_addr_t, phys_addr_t max_addr);
+extern phys_addr_t __init __memblock_alloc_base(phys_addr_t size,
+                phys_addr_t align, phys_addr_t max_addr);
+extern phys_addr_t __init memblock_phys_mem_size(void);
+extern phys_addr_t memblock_end_of_DRAM(void);
+extern void __init memblock_enforce_memory_limit(phys_addr_t memory_limit);
+extern int memblock_is_memory(phys_addr_t addr);
+extern int memblock_is_region_memory(phys_addr_t base, phys_addr_t size);
+extern int __init memblock_is_reserved(phys_addr_t addr);
+extern int memblock_is_region_reserved(phys_addr_t base, phys_addr_t size);
 
 extern void memblock_dump_all(void);
 
 /* Provided by the architecture */
-extern u64 memblock_nid_range(u64 start, u64 end, int *nid);
+extern phys_addr_t memblock_nid_range(phys_addr_t start, phys_addr_t end, int *nid);
 
 /**
  * memblock_set_current_limit - Set the current allocation limit to allow
@@ -77,7 +77,7 @@ extern u64 memblock_nid_range(u64 start, u64 end, int *nid);
  *                         accessible during boot
  * @limit: New limit value (physical address)
  */
-extern void memblock_set_current_limit(u64 limit);
+extern void memblock_set_current_limit(phys_addr_t limit);
 
 
 /*
diff --git a/mm/memblock.c b/mm/memblock.c
index 73d903ebf3d4..81da63592a68 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -55,13 +55,14 @@ void memblock_dump_all(void)
         memblock_dump(&memblock.reserved, "reserved");
 }
 
-static unsigned long memblock_addrs_overlap(u64 base1, u64 size1, u64 base2,
-                                        u64 size2)
+static unsigned long memblock_addrs_overlap(phys_addr_t base1, phys_addr_t size1,
+                                       phys_addr_t base2, phys_addr_t size2)
 {
         return ((base1 < (base2 + size2)) && (base2 < (base1 + size1)));
 }
 
-static long memblock_addrs_adjacent(u64 base1, u64 size1, u64 base2, u64 size2)
+static long memblock_addrs_adjacent(phys_addr_t base1, phys_addr_t size1,
+                               phys_addr_t base2, phys_addr_t size2)
 {
         if (base2 == base1 + size1)
                 return 1;
@@ -72,12 +73,12 @@ static long memblock_addrs_adjacent(u64 base1, u64 size1, u64 base2, u64 size2)
 }
 
 static long memblock_regions_adjacent(struct memblock_type *type,
-                unsigned long r1, unsigned long r2)
+                                 unsigned long r1, unsigned long r2)
 {
-        u64 base1 = type->regions[r1].base;
-        u64 size1 = type->regions[r1].size;
-        u64 base2 = type->regions[r2].base;
-        u64 size2 = type->regions[r2].size;
+        phys_addr_t base1 = type->regions[r1].base;
+        phys_addr_t size1 = type->regions[r1].size;
+        phys_addr_t base2 = type->regions[r2].base;
+        phys_addr_t size2 = type->regions[r2].size;
 
         return memblock_addrs_adjacent(base1, size1, base2, size2);
 }
@@ -128,7 +129,7 @@ void __init memblock_analyze(void)
                 memblock.memory.size += memblock.memory.regions[i].size;
 }
 
-static long memblock_add_region(struct memblock_type *type, u64 base, u64 size)
+static long memblock_add_region(struct memblock_type *type, phys_addr_t base, phys_addr_t size)
 {
         unsigned long coalesced = 0;
         long adjacent, i;
@@ -141,8 +142,8 @@ static long memblock_add_region(struct memblock_type *type, u64 base, u64 size)
 
         /* First try and coalesce this MEMBLOCK with another. */
         for (i = 0; i < type->cnt; i++) {
-                u64 rgnbase = type->regions[i].base;
-                u64 rgnsize = type->regions[i].size;
+                phys_addr_t rgnbase = type->regions[i].base;
+                phys_addr_t rgnsize = type->regions[i].size;
 
                 if ((rgnbase == base) && (rgnsize == size))
                         /* Already have this region, so we're done */
@@ -192,16 +193,16 @@ static long memblock_add_region(struct memblock_type *type, u64 base, u64 size)
         return 0;
 }
 
-long memblock_add(u64 base, u64 size)
+long memblock_add(phys_addr_t base, phys_addr_t size)
 {
         return memblock_add_region(&memblock.memory, base, size);
 
 }
 
-static long __memblock_remove(struct memblock_type *type, u64 base, u64 size)
+static long __memblock_remove(struct memblock_type *type, phys_addr_t base, phys_addr_t size)
 {
-        u64 rgnbegin, rgnend;
-        u64 end = base + size;
+        phys_addr_t rgnbegin, rgnend;
+        phys_addr_t end = base + size;
         int i;
 
         rgnbegin = rgnend = 0; /* supress gcc warnings */
@@ -246,17 +247,17 @@ static long __memblock_remove(struct memblock_type *type, u64 base, u64 size)
         return memblock_add_region(type, end, rgnend - end);
 }
 
-long memblock_remove(u64 base, u64 size)
+long memblock_remove(phys_addr_t base, phys_addr_t size)
 {
         return __memblock_remove(&memblock.memory, base, size);
 }
 
-long __init memblock_free(u64 base, u64 size)
+long __init memblock_free(phys_addr_t base, phys_addr_t size)
 {
         return __memblock_remove(&memblock.reserved, base, size);
 }
 
-long __init memblock_reserve(u64 base, u64 size)
+long __init memblock_reserve(phys_addr_t base, phys_addr_t size)
 {
         struct memblock_type *_rgn = &memblock.reserved;
 
@@ -265,13 +266,13 @@ long __init memblock_reserve(u64 base, u64 size)
         return memblock_add_region(_rgn, base, size);
 }
 
-long memblock_overlaps_region(struct memblock_type *type, u64 base, u64 size)
+long memblock_overlaps_region(struct memblock_type *type, phys_addr_t base, phys_addr_t size)
 {
         unsigned long i;
 
         for (i = 0; i < type->cnt; i++) {
-                u64 rgnbase = type->regions[i].base;
-                u64 rgnsize = type->regions[i].size;
+                phys_addr_t rgnbase = type->regions[i].base;
+                phys_addr_t rgnsize = type->regions[i].size;
                 if (memblock_addrs_overlap(base, size, rgnbase, rgnsize))
                         break;
         }
@@ -279,20 +280,20 @@ long memblock_overlaps_region(struct memblock_type *type, u64 base, u64 size)
         return (i < type->cnt) ? i : -1;
 }
 
-static u64 memblock_align_down(u64 addr, u64 size)
+static phys_addr_t memblock_align_down(phys_addr_t addr, phys_addr_t size)
 {
         return addr & ~(size - 1);
 }
 
-static u64 memblock_align_up(u64 addr, u64 size)
+static phys_addr_t memblock_align_up(phys_addr_t addr, phys_addr_t size)
 {
         return (addr + (size - 1)) & ~(size - 1);
 }
 
-static u64 __init memblock_alloc_region(u64 start, u64 end,
-                                   u64 size, u64 align)
+static phys_addr_t __init memblock_alloc_region(phys_addr_t start, phys_addr_t end,
+                                           phys_addr_t size, phys_addr_t align)
 {
-        u64 base, res_base;
+        phys_addr_t base, res_base;
         long j;
 
         base = memblock_align_down((end - size), align);
@@ -301,7 +302,7 @@ static u64 __init memblock_alloc_region(u64 start, u64 end,
                 if (j < 0) {
                         /* this area isn't reserved, take it */
                         if (memblock_add_region(&memblock.reserved, base, size) < 0)
-                                base = ~(u64)0;
+                                base = ~(phys_addr_t)0;
                         return base;
                 }
                 res_base = memblock.reserved.regions[j].base;
@@ -310,42 +311,43 @@ static u64 __init memblock_alloc_region(u64 start, u64 end,
                 base = memblock_align_down(res_base - size, align);
         }
 
-        return ~(u64)0;
+        return ~(phys_addr_t)0;
 }
 
-u64 __weak __init memblock_nid_range(u64 start, u64 end, int *nid)
+phys_addr_t __weak __init memblock_nid_range(phys_addr_t start, phys_addr_t end, int *nid)
 {
         *nid = 0;
 
         return end;
 }
 
-static u64 __init memblock_alloc_nid_region(struct memblock_region *mp,
-                                       u64 size, u64 align, int nid)
+static phys_addr_t __init memblock_alloc_nid_region(struct memblock_region *mp,
+                                               phys_addr_t size,
+                                               phys_addr_t align, int nid)
 {
-        u64 start, end;
+        phys_addr_t start, end;
 
         start = mp->base;
         end = start + mp->size;
 
         start = memblock_align_up(start, align);
         while (start < end) {
-                u64 this_end;
+                phys_addr_t this_end;
                 int this_nid;
 
                 this_end = memblock_nid_range(start, end, &this_nid);
                 if (this_nid == nid) {
-                        u64 ret = memblock_alloc_region(start, this_end, size, align);
-                        if (ret != ~(u64)0)
+                        phys_addr_t ret = memblock_alloc_region(start, this_end, size, align);
+                        if (ret != ~(phys_addr_t)0)
                                 return ret;
                 }
                 start = this_end;
         }
 
-        return ~(u64)0;
+        return ~(phys_addr_t)0;
 }
 
-u64 __init memblock_alloc_nid(u64 size, u64 align, int nid)
+phys_addr_t __init memblock_alloc_nid(phys_addr_t size, phys_addr_t align, int nid)
 {
         struct memblock_type *mem = &memblock.memory;
         int i;
@@ -359,23 +361,23 @@ u64 __init memblock_alloc_nid(u64 size, u64 align, int nid)
         size = memblock_align_up(size, align);
 
         for (i = 0; i < mem->cnt; i++) {
-                u64 ret = memblock_alloc_nid_region(&mem->regions[i],
+                phys_addr_t ret = memblock_alloc_nid_region(&mem->regions[i],
                                                size, align, nid);
-                if (ret != ~(u64)0)
+                if (ret != ~(phys_addr_t)0)
                         return ret;
         }
 
         return memblock_alloc(size, align);
 }
 
-u64 __init memblock_alloc(u64 size, u64 align)
+phys_addr_t __init memblock_alloc(phys_addr_t size, phys_addr_t align)
 {
         return memblock_alloc_base(size, align, MEMBLOCK_ALLOC_ACCESSIBLE);
 }
 
-u64 __init memblock_alloc_base(u64 size, u64 align, u64 max_addr)
+phys_addr_t __init memblock_alloc_base(phys_addr_t size, phys_addr_t align, phys_addr_t max_addr)
 {
-        u64 alloc;
+        phys_addr_t alloc;
 
         alloc = __memblock_alloc_base(size, align, max_addr);
 
@@ -386,11 +388,11 @@ u64 __init memblock_alloc_base(u64 size, u64 align, u64 max_addr)
         return alloc;
 }
 
-u64 __init __memblock_alloc_base(u64 size, u64 align, u64 max_addr)
+phys_addr_t __init __memblock_alloc_base(phys_addr_t size, phys_addr_t align, phys_addr_t max_addr)
 {
         long i;
-        u64 base = 0;
-        u64 res_base;
+        phys_addr_t base = 0;
+        phys_addr_t res_base;
 
         BUG_ON(0 == size);
 
@@ -405,26 +407,26 @@ u64 __init __memblock_alloc_base(u64 size, u64 align, u64 max_addr)
          * top of memory
          */
         for (i = memblock.memory.cnt - 1; i >= 0; i--) {
-                u64 memblockbase = memblock.memory.regions[i].base;
-                u64 memblocksize = memblock.memory.regions[i].size;
+                phys_addr_t memblockbase = memblock.memory.regions[i].base;
+                phys_addr_t memblocksize = memblock.memory.regions[i].size;
 
                 if (memblocksize < size)
                         continue;
                 base = min(memblockbase + memblocksize, max_addr);
                 res_base = memblock_alloc_region(memblockbase, base, size, align);
-                if (res_base != ~(u64)0)
+                if (res_base != ~(phys_addr_t)0)
                         return res_base;
         }
         return 0;
 }
 
 /* You must call memblock_analyze() before this. */
-u64 __init memblock_phys_mem_size(void)
+phys_addr_t __init memblock_phys_mem_size(void)
 {
         return memblock.memory.size;
 }
 
-u64 memblock_end_of_DRAM(void)
+phys_addr_t memblock_end_of_DRAM(void)
 {
         int idx = memblock.memory.cnt - 1;
 
@@ -432,10 +434,10 @@ u64 memblock_end_of_DRAM(void)
 }
 
 /* You must call memblock_analyze() after this. */
-void __init memblock_enforce_memory_limit(u64 memory_limit)
+void __init memblock_enforce_memory_limit(phys_addr_t memory_limit)
 {
         unsigned long i;
-        u64 limit;
+        phys_addr_t limit;
         struct memblock_region *p;
 
         if (!memory_limit)
@@ -472,7 +474,7 @@ void __init memblock_enforce_memory_limit(u64 memory_limit)
         }
 }
 
-static int memblock_search(struct memblock_type *type, u64 addr)
+static int memblock_search(struct memblock_type *type, phys_addr_t addr)
 {
         unsigned int left = 0, right = type->cnt;
 
@@ -490,17 +492,17 @@ static int memblock_search(struct memblock_type *type, u64 addr)
         return -1;
 }
 
-int __init memblock_is_reserved(u64 addr)
+int __init memblock_is_reserved(phys_addr_t addr)
 {
         return memblock_search(&memblock.reserved, addr) != -1;
 }
 
-int memblock_is_memory(u64 addr)
+int memblock_is_memory(phys_addr_t addr)
 {
         return memblock_search(&memblock.memory, addr) != -1;
 }
 
-int memblock_is_region_memory(u64 base, u64 size)
+int memblock_is_region_memory(phys_addr_t base, phys_addr_t size)
 {
         int idx = memblock_search(&memblock.reserved, base);
 
@@ -511,13 +513,13 @@ int memblock_is_region_memory(u64 base, u64 size)
                  memblock.reserved.regions[idx].size) >= (base + size);
 }
 
-int memblock_is_region_reserved(u64 base, u64 size)
+int memblock_is_region_reserved(phys_addr_t base, phys_addr_t size)
 {
         return memblock_overlaps_region(&memblock.reserved, base, size) >= 0;
 }
 
 
-void __init memblock_set_current_limit(u64 limit)
+void __init memblock_set_current_limit(phys_addr_t limit)
 {
         memblock.current_limit = limit;
 }