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Message-ID: <4EBA0D3D.1090808@gmail.com>
Date: Wed, 09 Nov 2011 13:18:53 +0800
From: Wang Sheng-Hui <shhuiw@...il.com>
To: yinghai@...nel.org, linux-mm@...ck.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] cleanup: convert the int cnt to unsigned long in
mm/memblock.c
On 2011年11月09日 10:01, Wang Sheng-Hui wrote:
> We have the following definition in memblock.h:
> struct memblock_type {
> unsigned long cnt; /* number of regions */
> unsigned long max; /* size of the allocated array */
> struct memblock_region *regions;
> };
>
> But in memblock.c, some cnt/max vars are typed to int
> instead of unsigned long.
> This patch does the code cleanup.
>
>
> Signed-off-by: Wang Sheng-Hui <shhuiw@...il.com>
> ---
> mm/memblock.c | 38 +++++++++++++++++++++-----------------
> 1 files changed, 21 insertions(+), 17 deletions(-)
>
> diff --git a/mm/memblock.c b/mm/memblock.c
> index 4d4d5ee..3618241 100644
> --- a/mm/memblock.c
> +++ b/mm/memblock.c
> @@ -52,13 +52,14 @@ static phys_addr_t __init_memblock memblock_align_up(phys_addr_t addr, phys_addr
> return (addr + (size - 1)) & ~(size - 1);
> }
>
> -static unsigned long __init_memblock memblock_addrs_overlap(phys_addr_t base1, phys_addr_t size1,
> - phys_addr_t base2, phys_addr_t size2)
> +static int __init_memblock 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)));
> }
>
> -long __init_memblock memblock_overlaps_region(struct memblock_type *type, phys_addr_t base, phys_addr_t size)
> +long __init_memblock memblock_overlaps_region(struct memblock_type *type,
> + phys_addr_t base, phys_addr_t size)
> {
> unsigned long i;
>
> @@ -111,7 +112,7 @@ static phys_addr_t __init_memblock memblock_find_region(phys_addr_t start, phys_
> static phys_addr_t __init_memblock memblock_find_base(phys_addr_t size,
> phys_addr_t align, phys_addr_t start, phys_addr_t end)
> {
> - long i;
> + unsigned long i;
>
> BUG_ON(0 == size);
>
> @@ -199,7 +200,8 @@ static long memblock_add_region(struct memblock_type *type, phys_addr_t base, ph
> static int __init_memblock memblock_double_array(struct memblock_type *type)
> {
> struct memblock_region *new_array, *old_array;
> - phys_addr_t old_size, new_size, addr;
> + phys_addr_t addr;
> + unsigned long old_size, new_size;
> int use_slab = slab_is_available();
>
> /* We don't allow resizing until we know about the reserved regions
> @@ -277,7 +279,8 @@ static long __init_memblock memblock_add_region(struct memblock_type *type,
> phys_addr_t base, phys_addr_t size)
> {
> phys_addr_t end = base + size;
> - int i, slot = -1;
> + long slot = -1;
> + unsigned long i;
>
> /* First try and coalesce this MEMBLOCK with others */
> for (i = 0; i < type->cnt; i++) {
> @@ -413,7 +416,7 @@ static long __init_memblock __memblock_remove(struct memblock_type *type,
> phys_addr_t base, phys_addr_t size)
> {
> phys_addr_t end = base + size;
> - int i;
> + unsigned long i;
>
> /* Walk through the array for collisions */
> for (i = 0; i < type->cnt; i++) {
> @@ -583,7 +586,7 @@ static phys_addr_t __init memblock_alloc_nid_region(struct memblock_region *mp,
> 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;
> + unsigned long i;
>
> BUG_ON(0 == size);
>
> @@ -628,7 +631,7 @@ phys_addr_t __init memblock_phys_mem_size(void)
>
> phys_addr_t __init_memblock memblock_end_of_DRAM(void)
> {
> - int idx = memblock.memory.cnt - 1;
> + unsigned long idx = memblock.memory.cnt - 1;
>
> return (memblock.memory.regions[idx].base + memblock.memory.regions[idx].size);
> }
> @@ -674,12 +677,13 @@ void __init memblock_enforce_memory_limit(phys_addr_t memory_limit)
> }
> }
>
> -static int __init_memblock memblock_search(struct memblock_type *type, phys_addr_t addr)
> +static long __init_memblock memblock_search(struct memblock_type *type,
> + phys_addr_t addr)
> {
> - unsigned int left = 0, right = type->cnt;
> + unsigned long left = 0, right = type->cnt;
>
> do {
> - unsigned int mid = (right + left) / 2;
> + unsigned long mid = (right + left) / 2;
>
> if (addr < type->regions[mid].base)
> right = mid;
> @@ -704,7 +708,7 @@ int __init_memblock memblock_is_memory(phys_addr_t addr)
>
> int __init_memblock memblock_is_region_memory(phys_addr_t base, phys_addr_t size)
> {
> - int idx = memblock_search(&memblock.memory, base);
> + long idx = memblock_search(&memblock.memory, base);
>
> if (idx == -1)
> return 0;
> @@ -727,7 +731,7 @@ void __init_memblock memblock_set_current_limit(phys_addr_t limit)
> static void __init_memblock memblock_dump(struct memblock_type *region, char *name)
> {
> unsigned long long base, size;
> - int i;
> + unsigned long i;
>
> pr_info(" %s.cnt = 0x%lx\n", name, region->cnt);
>
> @@ -735,7 +739,7 @@ static void __init_memblock memblock_dump(struct memblock_type *region, char *na
> base = region->regions[i].base;
> size = region->regions[i].size;
>
> - pr_info(" %s[%#x]\t[%#016llx-%#016llx], %#llx bytes\n",
> + pr_info(" %s[%#lx]\t[%#016llx-%#016llx], %#llx bytes\n",
> name, i, base, base + size - 1, size);
> }
> }
> @@ -754,7 +758,7 @@ void __init_memblock memblock_dump_all(void)
>
> void __init memblock_analyze(void)
> {
> - int i;
> + unsigned long i;
>
> /* Check marker in the unused last array entry */
> WARN_ON(memblock_memory_init_regions[INIT_MEMBLOCK_REGIONS].base
> @@ -818,7 +822,7 @@ static int memblock_debug_show(struct seq_file *m, void *private)
> {
> struct memblock_type *type = m->private;
> struct memblock_region *reg;
> - int i;
> + unsigned long i;
>
> for (i = 0; i < type->cnt; i++) {
> reg = &type->regions[i];
Sorry, missed one line. Fixed it. New patch generated.
>From 35ba6e1cf87c670710282793025d5113865c4ef5 Mon Sep 17 00:00:00 2001
From: Wang Sheng-Hui <shhuiw@...il.com>
Date: Wed, 9 Nov 2011 13:15:54 +0800
Subject: [PATCH 2/2] cleanup: convert the int cnt to unsigned long in mm/memblock.c
We have the following definition in memblock.h:
struct memblock_type {
unsigned long cnt; /* number of regions */
unsigned long max; /* size of the allocated array */
struct memblock_region *regions;
};
But in memblock.c, some cnt/max vars are typed to int
instead of unsigned long.
This patch does the code cleanup.
Signed-off-by: Wang Sheng-Hui <shhuiw@...il.com>
---
mm/memblock.c | 40 ++++++++++++++++++++++------------------
1 files changed, 22 insertions(+), 18 deletions(-)
diff --git a/mm/memblock.c b/mm/memblock.c
index 4d4d5ee..09ff05b 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -52,13 +52,14 @@ static phys_addr_t __init_memblock memblock_align_up(phys_addr_t addr, phys_addr
return (addr + (size - 1)) & ~(size - 1);
}
-static unsigned long __init_memblock memblock_addrs_overlap(phys_addr_t base1, phys_addr_t size1,
- phys_addr_t base2, phys_addr_t size2)
+static int __init_memblock 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)));
}
-long __init_memblock memblock_overlaps_region(struct memblock_type *type, phys_addr_t base, phys_addr_t size)
+long __init_memblock memblock_overlaps_region(struct memblock_type *type,
+ phys_addr_t base, phys_addr_t size)
{
unsigned long i;
@@ -111,7 +112,7 @@ static phys_addr_t __init_memblock memblock_find_region(phys_addr_t start, phys_
static phys_addr_t __init_memblock memblock_find_base(phys_addr_t size,
phys_addr_t align, phys_addr_t start, phys_addr_t end)
{
- long i;
+ unsigned long i;
BUG_ON(0 == size);
@@ -199,7 +200,8 @@ static long memblock_add_region(struct memblock_type *type, phys_addr_t base, ph
static int __init_memblock memblock_double_array(struct memblock_type *type)
{
struct memblock_region *new_array, *old_array;
- phys_addr_t old_size, new_size, addr;
+ phys_addr_t addr;
+ unsigned long old_size, new_size;
int use_slab = slab_is_available();
/* We don't allow resizing until we know about the reserved regions
@@ -277,7 +279,8 @@ static long __init_memblock memblock_add_region(struct memblock_type *type,
phys_addr_t base, phys_addr_t size)
{
phys_addr_t end = base + size;
- int i, slot = -1;
+ long slot = -1;
+ unsigned long i;
/* First try and coalesce this MEMBLOCK with others */
for (i = 0; i < type->cnt; i++) {
@@ -413,7 +416,7 @@ static long __init_memblock __memblock_remove(struct memblock_type *type,
phys_addr_t base, phys_addr_t size)
{
phys_addr_t end = base + size;
- int i;
+ unsigned long i;
/* Walk through the array for collisions */
for (i = 0; i < type->cnt; i++) {
@@ -583,7 +586,7 @@ static phys_addr_t __init memblock_alloc_nid_region(struct memblock_region *mp,
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;
+ unsigned long i;
BUG_ON(0 == size);
@@ -628,7 +631,7 @@ phys_addr_t __init memblock_phys_mem_size(void)
phys_addr_t __init_memblock memblock_end_of_DRAM(void)
{
- int idx = memblock.memory.cnt - 1;
+ unsigned long idx = memblock.memory.cnt - 1;
return (memblock.memory.regions[idx].base + memblock.memory.regions[idx].size);
}
@@ -674,12 +677,13 @@ void __init memblock_enforce_memory_limit(phys_addr_t memory_limit)
}
}
-static int __init_memblock memblock_search(struct memblock_type *type, phys_addr_t addr)
+static long __init_memblock memblock_search(struct memblock_type *type,
+ phys_addr_t addr)
{
- unsigned int left = 0, right = type->cnt;
+ unsigned long left = 0, right = type->cnt;
do {
- unsigned int mid = (right + left) / 2;
+ unsigned long mid = (right + left) / 2;
if (addr < type->regions[mid].base)
right = mid;
@@ -704,7 +708,7 @@ int __init_memblock memblock_is_memory(phys_addr_t addr)
int __init_memblock memblock_is_region_memory(phys_addr_t base, phys_addr_t size)
{
- int idx = memblock_search(&memblock.memory, base);
+ long idx = memblock_search(&memblock.memory, base);
if (idx == -1)
return 0;
@@ -727,7 +731,7 @@ void __init_memblock memblock_set_current_limit(phys_addr_t limit)
static void __init_memblock memblock_dump(struct memblock_type *region, char *name)
{
unsigned long long base, size;
- int i;
+ unsigned long i;
pr_info(" %s.cnt = 0x%lx\n", name, region->cnt);
@@ -735,7 +739,7 @@ static void __init_memblock memblock_dump(struct memblock_type *region, char *na
base = region->regions[i].base;
size = region->regions[i].size;
- pr_info(" %s[%#x]\t[%#016llx-%#016llx], %#llx bytes\n",
+ pr_info(" %s[%#lx]\t[%#016llx-%#016llx], %#llx bytes\n",
name, i, base, base + size - 1, size);
}
}
@@ -754,7 +758,7 @@ void __init_memblock memblock_dump_all(void)
void __init memblock_analyze(void)
{
- int i;
+ unsigned long i;
/* Check marker in the unused last array entry */
WARN_ON(memblock_memory_init_regions[INIT_MEMBLOCK_REGIONS].base
@@ -818,11 +822,11 @@ static int memblock_debug_show(struct seq_file *m, void *private)
{
struct memblock_type *type = m->private;
struct memblock_region *reg;
- int i;
+ unsigned long i;
for (i = 0; i < type->cnt; i++) {
reg = &type->regions[i];
- seq_printf(m, "%4d: ", i);
+ seq_printf(m, "%4ld: ", i);
if (sizeof(phys_addr_t) == 4)
seq_printf(m, "0x%08lx..0x%08lx\n",
(unsigned long)reg->base,
--
1.7.1
--
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