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Subject[PATCH 09/25] lmb: Change u64 to phys_addr_t
Date
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>
---
include/linux/lmb.h | 44 ++++++++++----------
lib/lmb.c | 114 ++++++++++++++++++++++++++-------------------------
2 files changed, 80 insertions(+), 78 deletions(-)
diff --git a/include/linux/lmb.h b/include/linux/lmb.h
index 6912ae2..042250c 100644
--- a/include/linux/lmb.h
+++ b/include/linux/lmb.h
@@ -21,19 +21,19 @@
#define MAX_LMB_REGIONS 128

struct lmb_region {
- u64 base;
- u64 size;
+ phys_addr_t base;
+ phys_addr_t size;
};

struct lmb_type {
unsigned long cnt;
- u64 size;
+ phys_addr_t size;
struct lmb_region regions[MAX_LMB_REGIONS+1];
};

struct lmb {
unsigned long debug;
- u64 current_limit;
+ phys_addr_t current_limit;
struct lmb_type memory;
struct lmb_type reserved;
};
@@ -42,32 +42,32 @@ extern struct lmb lmb;

extern void __init lmb_init(void);
extern void __init lmb_analyze(void);
-extern long lmb_add(u64 base, u64 size);
-extern long lmb_remove(u64 base, u64 size);
-extern long __init lmb_free(u64 base, u64 size);
-extern long __init lmb_reserve(u64 base, u64 size);
+extern long lmb_add(phys_addr_t base, phys_addr_t size);
+extern long lmb_remove(phys_addr_t base, phys_addr_t size);
+extern long __init lmb_free(phys_addr_t base, phys_addr_t size);
+extern long __init lmb_reserve(phys_addr_t base, phys_addr_t size);

-extern u64 __init lmb_alloc_nid(u64 size, u64 align, int nid);
-extern u64 __init lmb_alloc(u64 size, u64 align);
+extern phys_addr_t __init lmb_alloc_nid(phys_addr_t size, phys_addr_t align, int nid);
+extern phys_addr_t __init lmb_alloc(phys_addr_t size, phys_addr_t align);

/* Flags for lmb_alloc_base() amd __lmb_alloc_base() */
-#define LMB_ALLOC_ANYWHERE (~(u64)0)
+#define LMB_ALLOC_ANYWHERE (~(phys_addr_t)0)
#define LMB_ALLOC_ACCESSIBLE 0

-extern u64 __init lmb_alloc_base(u64 size,
- u64, u64 max_addr);
-extern u64 __init __lmb_alloc_base(u64 size,
- u64 align, u64 max_addr);
-extern u64 __init lmb_phys_mem_size(void);
-extern u64 lmb_end_of_DRAM(void);
-extern void __init lmb_enforce_memory_limit(u64 memory_limit);
-extern int __init lmb_is_reserved(u64 addr);
-extern int lmb_is_region_reserved(u64 base, u64 size);
+extern phys_addr_t __init lmb_alloc_base(phys_addr_t size,
+ phys_addr_t, phys_addr_t max_addr);
+extern phys_addr_t __init __lmb_alloc_base(phys_addr_t size,
+ phys_addr_t align, phys_addr_t max_addr);
+extern phys_addr_t __init lmb_phys_mem_size(void);
+extern phys_addr_t lmb_end_of_DRAM(void);
+extern void __init lmb_enforce_memory_limit(phys_addr_t memory_limit);
+extern int __init lmb_is_reserved(phys_addr_t addr);
+extern int lmb_is_region_reserved(phys_addr_t base, phys_addr_t size);

extern void lmb_dump_all(void);

/* Provided by the architecture */
-extern u64 lmb_nid_range(u64 start, u64 end, int *nid);
+extern phys_addr_t lmb_nid_range(phys_addr_t start, phys_addr_t end, int *nid);

/**
* lmb_set_current_limit - Set the current allocation limit to allow
@@ -75,7 +75,7 @@ extern u64 lmb_nid_range(u64 start, u64 end, int *nid);
* accessible during boot
* @limit: New limit value (physical address)
*/
-extern void lmb_set_current_limit(u64 limit);
+extern void lmb_set_current_limit(phys_addr_t limit);


/*
diff --git a/lib/lmb.c b/lib/lmb.c
index e7a7842..2995673 100644
--- a/lib/lmb.c
+++ b/lib/lmb.c
@@ -55,13 +55,14 @@ void lmb_dump_all(void)
lmb_dump(&lmb.reserved, "reserved");
}

-static unsigned long lmb_addrs_overlap(u64 base1, u64 size1, u64 base2,
- u64 size2)
+static unsigned long lmb_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 lmb_addrs_adjacent(u64 base1, u64 size1, u64 base2, u64 size2)
+static long lmb_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 lmb_addrs_adjacent(u64 base1, u64 size1, u64 base2, u64 size2)
}

static long lmb_regions_adjacent(struct lmb_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 lmb_addrs_adjacent(base1, size1, base2, size2);
}
@@ -128,7 +129,7 @@ void __init lmb_analyze(void)
lmb.memory.size += lmb.memory.regions[i].size;
}

-static long lmb_add_region(struct lmb_type *type, u64 base, u64 size)
+static long lmb_add_region(struct lmb_type *type, phys_addr_t base, phys_addr_t size)
{
unsigned long coalesced = 0;
long adjacent, i;
@@ -141,8 +142,8 @@ static long lmb_add_region(struct lmb_type *type, u64 base, u64 size)

/* First try and coalesce this LMB 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 lmb_add_region(struct lmb_type *type, u64 base, u64 size)
return 0;
}

-long lmb_add(u64 base, u64 size)
+long lmb_add(phys_addr_t base, phys_addr_t size)
{
return lmb_add_region(&lmb.memory, base, size);

}

-static long __lmb_remove(struct lmb_type *type, u64 base, u64 size)
+static long __lmb_remove(struct lmb_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 __lmb_remove(struct lmb_type *type, u64 base, u64 size)
return lmb_add_region(type, end, rgnend - end);
}

-long lmb_remove(u64 base, u64 size)
+long lmb_remove(phys_addr_t base, phys_addr_t size)
{
return __lmb_remove(&lmb.memory, base, size);
}

-long __init lmb_free(u64 base, u64 size)
+long __init lmb_free(phys_addr_t base, phys_addr_t size)
{
return __lmb_remove(&lmb.reserved, base, size);
}

-long __init lmb_reserve(u64 base, u64 size)
+long __init lmb_reserve(phys_addr_t base, phys_addr_t size)
{
struct lmb_type *_rgn = &lmb.reserved;

@@ -265,13 +266,13 @@ long __init lmb_reserve(u64 base, u64 size)
return lmb_add_region(_rgn, base, size);
}

-long lmb_overlaps_region(struct lmb_type *type, u64 base, u64 size)
+long lmb_overlaps_region(struct lmb_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 (lmb_addrs_overlap(base, size, rgnbase, rgnsize))
break;
}
@@ -279,20 +280,20 @@ long lmb_overlaps_region(struct lmb_type *type, u64 base, u64 size)
return (i < type->cnt) ? i : -1;
}

-static u64 lmb_align_down(u64 addr, u64 size)
+static phys_addr_t lmb_align_down(phys_addr_t addr, phys_addr_t size)
{
return addr & ~(size - 1);
}

-static u64 lmb_align_up(u64 addr, u64 size)
+static phys_addr_t lmb_align_up(phys_addr_t addr, phys_addr_t size)
{
return (addr + (size - 1)) & ~(size - 1);
}

-static u64 __init lmb_alloc_region(u64 start, u64 end,
- u64 size, u64 align)
+static phys_addr_t __init lmb_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 = lmb_align_down((end - size), align);
@@ -301,7 +302,7 @@ static u64 __init lmb_alloc_region(u64 start, u64 end,
if (j < 0) {
/* this area isn't reserved, take it */
if (lmb_add_region(&lmb.reserved, base, size) < 0)
- base = ~(u64)0;
+ base = ~(phys_addr_t)0;
return base;
}
res_base = lmb.reserved.regions[j].base;
@@ -310,42 +311,43 @@ static u64 __init lmb_alloc_region(u64 start, u64 end,
base = lmb_align_down(res_base - size, align);
}

- return ~(u64)0;
+ return ~(phys_addr_t)0;
}

-u64 __weak __init lmb_nid_range(u64 start, u64 end, int *nid)
+phys_addr_t __weak __init lmb_nid_range(phys_addr_t start, phys_addr_t end, int *nid)
{
*nid = 0;

return end;
}

-static u64 __init lmb_alloc_nid_region(struct lmb_region *mp,
- u64 size, u64 align, int nid)
+static phys_addr_t __init lmb_alloc_nid_region(struct lmb_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 = lmb_align_up(start, align);
while (start < end) {
- u64 this_end;
+ phys_addr_t this_end;
int this_nid;

this_end = lmb_nid_range(start, end, &this_nid);
if (this_nid == nid) {
- u64 ret = lmb_alloc_region(start, this_end, size, align);
- if (ret != ~(u64)0)
+ phys_addr_t ret = lmb_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 lmb_alloc_nid(u64 size, u64 align, int nid)
+phys_addr_t __init lmb_alloc_nid(phys_addr_t size, phys_addr_t align, int nid)
{
struct lmb_type *mem = &lmb.memory;
int i;
@@ -359,23 +361,23 @@ u64 __init lmb_alloc_nid(u64 size, u64 align, int nid)
size = lmb_align_up(size, align);

for (i = 0; i < mem->cnt; i++) {
- u64 ret = lmb_alloc_nid_region(&mem->regions[i],
+ phys_addr_t ret = lmb_alloc_nid_region(&mem->regions[i],
size, align, nid);
- if (ret != ~(u64)0)
+ if (ret != ~(phys_addr_t)0)
return ret;
}

return lmb_alloc(size, align);
}

-u64 __init lmb_alloc(u64 size, u64 align)
+phys_addr_t __init lmb_alloc(phys_addr_t size, phys_addr_t align)
{
return lmb_alloc_base(size, align, LMB_ALLOC_ACCESSIBLE);
}

-u64 __init lmb_alloc_base(u64 size, u64 align, u64 max_addr)
+phys_addr_t __init lmb_alloc_base(phys_addr_t size, phys_addr_t align, phys_addr_t max_addr)
{
- u64 alloc;
+ phys_addr_t alloc;

alloc = __lmb_alloc_base(size, align, max_addr);

@@ -386,11 +388,11 @@ u64 __init lmb_alloc_base(u64 size, u64 align, u64 max_addr)
return alloc;
}

-u64 __init __lmb_alloc_base(u64 size, u64 align, u64 max_addr)
+phys_addr_t __init __lmb_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 __lmb_alloc_base(u64 size, u64 align, u64 max_addr)
* top of memory
*/
for (i = lmb.memory.cnt - 1; i >= 0; i--) {
- u64 lmbbase = lmb.memory.regions[i].base;
- u64 lmbsize = lmb.memory.regions[i].size;
+ phys_addr_t lmbbase = lmb.memory.regions[i].base;
+ phys_addr_t lmbsize = lmb.memory.regions[i].size;

if (lmbsize < size)
continue;
base = min(lmbbase + lmbsize, max_addr);
res_base = lmb_alloc_region(lmbbase, base, size, align);
- if (res_base != ~(u64)0)
+ if (res_base != ~(phys_addr_t)0)
return res_base;
}
return 0;
}

/* You must call lmb_analyze() before this. */
-u64 __init lmb_phys_mem_size(void)
+phys_addr_t __init lmb_phys_mem_size(void)
{
return lmb.memory.size;
}

-u64 lmb_end_of_DRAM(void)
+phys_addr_t lmb_end_of_DRAM(void)
{
int idx = lmb.memory.cnt - 1;

@@ -432,10 +434,10 @@ u64 lmb_end_of_DRAM(void)
}

/* You must call lmb_analyze() after this. */
-void __init lmb_enforce_memory_limit(u64 memory_limit)
+void __init lmb_enforce_memory_limit(phys_addr_t memory_limit)
{
unsigned long i;
- u64 limit;
+ phys_addr_t limit;
struct lmb_region *p;

if (!memory_limit)
@@ -472,12 +474,12 @@ void __init lmb_enforce_memory_limit(u64 memory_limit)
}
}

-int __init lmb_is_reserved(u64 addr)
+int __init lmb_is_reserved(phys_addr_t addr)
{
int i;

for (i = 0; i < lmb.reserved.cnt; i++) {
- u64 upper = lmb.reserved.regions[i].base +
+ phys_addr_t upper = lmb.reserved.regions[i].base +
lmb.reserved.regions[i].size - 1;
if ((addr >= lmb.reserved.regions[i].base) && (addr <= upper))
return 1;
@@ -485,13 +487,13 @@ int __init lmb_is_reserved(u64 addr)
return 0;
}

-int lmb_is_region_reserved(u64 base, u64 size)
+int lmb_is_region_reserved(phys_addr_t base, phys_addr_t size)
{
return lmb_overlaps_region(&lmb.reserved, base, size);
}


-void __init lmb_set_current_limit(u64 limit)
+void __init lmb_set_current_limit(phys_addr_t limit)
{
lmb.current_limit = limit;
}
--
1.6.3.3


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