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-rw-r--r--arch/um/kernel/mem.c77
-rw-r--r--arch/um/kernel/physmem.c57
2 files changed, 57 insertions, 77 deletions
diff --git a/arch/um/kernel/mem.c b/arch/um/kernel/mem.c
index fb11992..d1480ff 100644
--- a/arch/um/kernel/mem.c
+++ b/arch/um/kernel/mem.c
@@ -65,8 +65,8 @@ void mem_init(void)
{
max_low_pfn = (high_physmem - uml_physmem) >> PAGE_SHIFT;
- /* clear the zero-page */
- memset((void *) empty_zero_page, 0, PAGE_SIZE);
+ /* clear the zero-page */
+ memset((void *) empty_zero_page, 0, PAGE_SIZE);
/* Map in the area just after the brk now that kmalloc is about
* to be turned on.
@@ -253,8 +253,10 @@ struct page *arch_validate(struct page *page, gfp_t mask, int order)
int i;
again:
- if(page == NULL) return(page);
- if(PageHighMem(page)) return(page);
+ if(page == NULL)
+ return page;
+ if(PageHighMem(page))
+ return page;
addr = (unsigned long) page_address(page);
for(i = 0; i < (1 << order); i++){
@@ -263,13 +265,15 @@ struct page *arch_validate(struct page *page, gfp_t mask, int order)
sizeof(zero),
&current->thread.fault_addr,
&current->thread.fault_catcher)){
- if(!(mask & __GFP_WAIT)) return(NULL);
+ if(!(mask & __GFP_WAIT))
+ return NULL;
else break;
}
addr += PAGE_SIZE;
}
- if(i == (1 << order)) return(page);
+ if(i == (1 << order))
+ return page;
page = alloc_pages(mask, order);
goto again;
}
@@ -283,7 +287,6 @@ void free_initmem(void)
}
#ifdef CONFIG_BLK_DEV_INITRD
-
void free_initrd_mem(unsigned long start, unsigned long end)
{
if (start < end)
@@ -296,37 +299,36 @@ void free_initrd_mem(unsigned long start, unsigned long end)
totalram_pages++;
}
}
-
#endif
void show_mem(void)
{
- int pfn, total = 0, reserved = 0;
- int shared = 0, cached = 0;
- int highmem = 0;
+ int pfn, total = 0, reserved = 0;
+ int shared = 0, cached = 0;
+ int highmem = 0;
struct page *page;
- printk("Mem-info:\n");
- show_free_areas();
- printk("Free swap: %6ldkB\n", nr_swap_pages<<(PAGE_SHIFT-10));
- pfn = max_mapnr;
- while(pfn-- > 0) {
+ printk("Mem-info:\n");
+ show_free_areas();
+ printk("Free swap: %6ldkB\n", nr_swap_pages<<(PAGE_SHIFT-10));
+ pfn = max_mapnr;
+ while(pfn-- > 0) {
page = pfn_to_page(pfn);
- total++;
- if(PageHighMem(page))
- highmem++;
- if(PageReserved(page))
- reserved++;
- else if(PageSwapCache(page))
- cached++;
- else if(page_count(page))
- shared += page_count(page) - 1;
- }
- printk("%d pages of RAM\n", total);
- printk("%d pages of HIGHMEM\n", highmem);
- printk("%d reserved pages\n", reserved);
- printk("%d pages shared\n", shared);
- printk("%d pages swap cached\n", cached);
+ total++;
+ if(PageHighMem(page))
+ highmem++;
+ if(PageReserved(page))
+ reserved++;
+ else if(PageSwapCache(page))
+ cached++;
+ else if(page_count(page))
+ shared += page_count(page) - 1;
+ }
+ printk("%d pages of RAM\n", total);
+ printk("%d pages of HIGHMEM\n", highmem);
+ printk("%d reserved pages\n", reserved);
+ printk("%d pages shared\n", shared);
+ printk("%d pages swap cached\n", cached);
}
/*
@@ -362,18 +364,7 @@ pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
struct page *pte_alloc_one(struct mm_struct *mm, unsigned long address)
{
struct page *pte;
-
+
pte = alloc_page(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO);
return pte;
}
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only. This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
diff --git a/arch/um/kernel/physmem.c b/arch/um/kernel/physmem.c
index 22d3cf3..638f3b5 100644
--- a/arch/um/kernel/physmem.c
+++ b/arch/um/kernel/physmem.c
@@ -40,7 +40,7 @@ static struct rb_node **find_rb(void *virt)
while(*n != NULL){
d = rb_entry(*n, struct phys_desc, rb);
if(d->virt == virt)
- return(n);
+ return n;
if(d->virt > virt)
n = &(*n)->rb_left;
@@ -48,7 +48,7 @@ static struct rb_node **find_rb(void *virt)
n = &(*n)->rb_right;
}
- return(n);
+ return n;
}
static struct phys_desc *find_phys_mapping(void *virt)
@@ -56,9 +56,9 @@ static struct phys_desc *find_phys_mapping(void *virt)
struct rb_node **n = find_rb(virt);
if(*n == NULL)
- return(NULL);
+ return NULL;
- return(rb_entry(*n, struct phys_desc, rb));
+ return rb_entry(*n, struct phys_desc, rb);
}
static void insert_phys_mapping(struct phys_desc *desc)
@@ -89,10 +89,10 @@ static struct desc_mapping *find_mapping(int fd)
list_for_each(ele, &descriptor_mappings){
desc = list_entry(ele, struct desc_mapping, list);
if(desc->fd == fd)
- return(desc);
+ return desc;
}
- return(NULL);
+ return NULL;
}
static struct desc_mapping *descriptor_mapping(int fd)
@@ -101,11 +101,11 @@ static struct desc_mapping *descriptor_mapping(int fd)
desc = find_mapping(fd);
if(desc != NULL)
- return(desc);
+ return desc;
desc = kmalloc(sizeof(*desc), GFP_ATOMIC);
if(desc == NULL)
- return(NULL);
+ return NULL;
*desc = ((struct desc_mapping)
{ .fd = fd,
@@ -113,7 +113,7 @@ static struct desc_mapping *descriptor_mapping(int fd)
.pages = LIST_HEAD_INIT(desc->pages) });
list_add(&desc->list, &descriptor_mappings);
- return(desc);
+ return desc;
}
int physmem_subst_mapping(void *virt, int fd, __u64 offset, int w)
@@ -125,11 +125,11 @@ int physmem_subst_mapping(void *virt, int fd, __u64 offset, int w)
fd_maps = descriptor_mapping(fd);
if(fd_maps == NULL)
- return(-ENOMEM);
+ return -ENOMEM;
phys = __pa(virt);
desc = find_phys_mapping(virt);
- if(desc != NULL)
+ if(desc != NULL)
panic("Address 0x%p is already substituted\n", virt);
err = -ENOMEM;
@@ -155,7 +155,7 @@ int physmem_subst_mapping(void *virt, int fd, __u64 offset, int w)
rb_erase(&desc->rb, &phys_mappings);
kfree(desc);
out:
- return(err);
+ return err;
}
static int physmem_fd = -1;
@@ -182,10 +182,10 @@ int physmem_remove_mapping(void *virt)
virt = (void *) ((unsigned long) virt & PAGE_MASK);
desc = find_phys_mapping(virt);
if(desc == NULL)
- return(0);
+ return 0;
remove_mapping(desc);
- return(1);
+ return 1;
}
void physmem_forget_descriptor(int fd)
@@ -239,9 +239,9 @@ void arch_free_page(struct page *page, int order)
int is_remapped(void *virt)
{
- struct phys_desc *desc = find_phys_mapping(virt);
+ struct phys_desc *desc = find_phys_mapping(virt);
- return(desc != NULL);
+ return desc != NULL;
}
/* Changed during early boot */
@@ -276,7 +276,7 @@ int init_maps(unsigned long physmem, unsigned long iomem, unsigned long highmem)
else map = alloc_bootmem_low_pages(total_len);
if(map == NULL)
- return(-ENOMEM);
+ return -ENOMEM;
for(i = 0; i < total_pages; i++){
p = &map[i];
@@ -286,7 +286,7 @@ int init_maps(unsigned long physmem, unsigned long iomem, unsigned long highmem)
}
max_mapnr = total_pages;
- return(0);
+ return 0;
}
/* Changed during early boot */
@@ -296,7 +296,7 @@ unsigned long get_kmem_end(void)
{
if(kmem_top == 0)
kmem_top = CHOOSE_MODE(kmem_end_tt, kmem_end_skas);
- return(kmem_top);
+ return kmem_top;
}
void map_memory(unsigned long virt, unsigned long phys, unsigned long len,
@@ -379,7 +379,7 @@ int phys_mapping(unsigned long phys, __u64 *offset_out)
*offset_out = phys - iomem_size;
}
- return(fd);
+ return fd;
}
static int __init uml_mem_setup(char *line, int *add)
@@ -422,13 +422,13 @@ unsigned long find_iomem(char *driver, unsigned long *len_out)
while(region != NULL){
if(!strcmp(region->driver, driver)){
*len_out = region->size;
- return(region->virt);
+ return region->virt;
}
region = region->next;
}
- return(0);
+ return 0;
}
int setup_iomem(void)
@@ -452,18 +452,7 @@ int setup_iomem(void)
region = region->next;
}
- return(0);
+ return 0;
}
__initcall(setup_iomem);
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only. This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
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