Skip to content

Commit

Permalink
dyn_array: split dyn_array functions from init/main.c
Browse files Browse the repository at this point in the history 
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
  • Loading branch information
Yinghai Lu authored and Ingo Molnar committed Oct 16, 2008
1 parent 2b46b37 commit e7f5ed8
Show file tree
Hide file tree
Showing 3 changed files with 125 additions and 119 deletions.
2 changes: 1 addition & 1 deletion init/Makefile
View file
Original file line number Diff line number Diff line change
Expand Up @@ -2,7 +2,7 @@
# Makefile for the linux kernel.
#

obj-y := main.o version.o mounts.o
obj-y := main.o dyn_array.o version.o mounts.o
ifneq ($(CONFIG_BLK_DEV_INITRD),y)
obj-y += noinitramfs.o
else
Expand Down
124 changes: 124 additions & 0 deletions init/dyn_array.c
View file
Original file line number Diff line number Diff line change
@@ -0,0 +1,124 @@
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/kallsyms.h>
#include <linux/init.h>
#include <linux/bootmem.h>
#include <linux/irq.h>

void __init pre_alloc_dyn_array(void)
{
#ifdef CONFIG_HAVE_DYN_ARRAY
unsigned long total_size = 0, size, phys;
unsigned long max_align = 1;
struct dyn_array **daa;
char *ptr;

/* get the total size at first */
for (daa = __dyn_array_start ; daa < __dyn_array_end; daa++) {
struct dyn_array *da = *daa;

size = da->size * (*da->nr);
print_fn_descriptor_symbol("dyn_array %s ", da->name);
printk(KERN_CONT "size:%#lx nr:%d align:%#lx\n",
da->size, *da->nr, da->align);
total_size += roundup(size, da->align);
if (da->align > max_align)
max_align = da->align;
}
if (total_size)
printk(KERN_DEBUG "dyn_array total_size: %#lx\n",
total_size);
else
return;

/* allocate them all together */
max_align = max_t(unsigned long, max_align, PAGE_SIZE);
ptr = __alloc_bootmem_nopanic(total_size, max_align, 0);
if (!ptr)
panic("Can not alloc dyn_alloc\n");

phys = virt_to_phys(ptr);
for (daa = __dyn_array_start ; daa < __dyn_array_end; daa++) {
struct dyn_array *da = *daa;

size = da->size * (*da->nr);
print_fn_descriptor_symbol("dyn_array %s ", da->name);

phys = roundup(phys, da->align);
*da->name = phys_to_virt(phys);
printk(KERN_CONT " ==> [%#lx - %#lx]\n", phys, phys + size);

phys += size;

if (da->init_work)
da->init_work(da);
}
#else
#ifdef CONFIF_GENERIC_HARDIRQS
unsigned int i;

for (i = 0; i < NR_IRQS; i++)
irq_desc[i].irq = i;
#endif
#endif
}

unsigned long __init per_cpu_dyn_array_size(unsigned long *align)
{
unsigned long total_size = 0;
#ifdef CONFIG_HAVE_DYN_ARRAY
unsigned long size;
struct dyn_array **daa;
unsigned max_align = 1;

for (daa = __per_cpu_dyn_array_start ; daa < __per_cpu_dyn_array_end; daa++) {
struct dyn_array *da = *daa;

size = da->size * (*da->nr);
print_fn_descriptor_symbol("per_cpu_dyn_array %s ", da->name);
printk(KERN_CONT "size:%#lx nr:%d align:%#lx\n",
da->size, *da->nr, da->align);
total_size += roundup(size, da->align);
if (da->align > max_align)
max_align = da->align;
}
if (total_size) {
printk(KERN_DEBUG "per_cpu_dyn_array total_size: %#lx\n",
total_size);
*align = max_align;
}
#endif
return total_size;
}

void __init per_cpu_alloc_dyn_array(int cpu, char *ptr)
{
#ifdef CONFIG_HAVE_DYN_ARRAY
unsigned long size, phys;
struct dyn_array **daa;
unsigned long addr;
void **array;

phys = virt_to_phys(ptr);
for (daa = __per_cpu_dyn_array_start ; daa < __per_cpu_dyn_array_end; daa++) {
struct dyn_array *da = *daa;

size = da->size * (*da->nr);
print_fn_descriptor_symbol("per_cpu_dyn_array %s ", da->name);

phys = roundup(phys, da->align);
addr = (unsigned long)da->name;
addr += per_cpu_offset(cpu);
array = (void **)addr;
*array = phys_to_virt(phys);
*da->name = *array; /* so init_work could use it directly */
printk(KERN_CONT " ==> [%#lx - %#lx]\n", phys, phys + size);

phys += size;

if (da->init_work) {
da->init_work(da);
}
}
#endif
}
118 changes: 0 additions & 118 deletions init/main.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -542,124 +542,6 @@ void __init __weak thread_info_cache_init(void)
{
}

void pre_alloc_dyn_array(void)
{
#ifdef CONFIG_HAVE_DYN_ARRAY
unsigned long total_size = 0, size, phys;
unsigned long max_align = 1;
struct dyn_array **daa;
char *ptr;

/* get the total size at first */
for (daa = __dyn_array_start ; daa < __dyn_array_end; daa++) {
struct dyn_array *da = *daa;

size = da->size * (*da->nr);
print_fn_descriptor_symbol("dyn_array %s ", da->name);
printk(KERN_CONT "size:%#lx nr:%d align:%#lx\n",
da->size, *da->nr, da->align);
total_size += roundup(size, da->align);
if (da->align > max_align)
max_align = da->align;
}
if (total_size)
printk(KERN_DEBUG "dyn_array total_size: %#lx\n",
total_size);
else
return;

/* allocate them all together */
max_align = max_t(unsigned long, max_align, PAGE_SIZE);
ptr = __alloc_bootmem_nopanic(total_size, max_align, 0);
if (!ptr)
panic("Can not alloc dyn_alloc\n");

phys = virt_to_phys(ptr);
for (daa = __dyn_array_start ; daa < __dyn_array_end; daa++) {
struct dyn_array *da = *daa;

size = da->size * (*da->nr);
print_fn_descriptor_symbol("dyn_array %s ", da->name);

phys = roundup(phys, da->align);
*da->name = phys_to_virt(phys);
printk(KERN_CONT " ==> [%#lx - %#lx]\n", phys, phys + size);

phys += size;

if (da->init_work)
da->init_work(da);
}
#else
#ifdef CONFIF_GENERIC_HARDIRQS
unsigned int i;

for (i = 0; i < NR_IRQS; i++)
irq_desc[i].irq = i;
#endif
#endif
}

unsigned long per_cpu_dyn_array_size(unsigned long *align)
{
unsigned long total_size = 0;
#ifdef CONFIG_HAVE_DYN_ARRAY
unsigned long size;
struct dyn_array **daa;
unsigned max_align = 1;

for (daa = __per_cpu_dyn_array_start ; daa < __per_cpu_dyn_array_end; daa++) {
struct dyn_array *da = *daa;

size = da->size * (*da->nr);
print_fn_descriptor_symbol("per_cpu_dyn_array %s ", da->name);
printk(KERN_CONT "size:%#lx nr:%d align:%#lx\n",
da->size, *da->nr, da->align);
total_size += roundup(size, da->align);
if (da->align > max_align)
max_align = da->align;
}
if (total_size) {
printk(KERN_DEBUG "per_cpu_dyn_array total_size: %#lx\n",
total_size);
*align = max_align;
}
#endif
return total_size;
}

void per_cpu_alloc_dyn_array(int cpu, char *ptr)
{
#ifdef CONFIG_HAVE_DYN_ARRAY
unsigned long size, phys;
struct dyn_array **daa;
unsigned long addr;
void **array;

phys = virt_to_phys(ptr);
for (daa = __per_cpu_dyn_array_start ; daa < __per_cpu_dyn_array_end; daa++) {
struct dyn_array *da = *daa;

size = da->size * (*da->nr);
print_fn_descriptor_symbol("per_cpu_dyn_array %s ", da->name);

phys = roundup(phys, da->align);
addr = (unsigned long)da->name;
addr += per_cpu_offset(cpu);
array = (void **)addr;
*array = phys_to_virt(phys);
*da->name = *array; /* so init_work could use it directly */
printk(KERN_CONT " ==> [%#lx - %#lx]\n", phys, phys + size);

phys += size;

if (da->init_work) {
da->init_work(da);
}
}
#endif
}

asmlinkage void __init start_kernel(void)
{
char * command_line;
Expand Down

0 comments on commit e7f5ed8

Please sign in to comment.