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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>
This commit is contained in:
Benjamin Herrenschmidt 2010-08-04 13:34:42 +10:00
parent cd3db0c4ca
commit 2898cc4cdf
2 changed files with 84 additions and 82 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

48
include/linux/memblock.h
View File

@ -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);
/*

118
mm/memblock.c
View File

@ -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;
}