/**
* 主核初始化
*/
asmlinkage void __init start_master(void)
{
debug_printstr_mmu("xby_debug, start cpu 0\n");
local_irq_disable();
//tick_init();
/* 为当前CPU设置其活动掩码 */
boot_cpu_init();
/* 体系结构特定的初始化过程 */
start_arch();
//初始化boot内存分配器
InitBootMemory(0xc0000000 + 8 * 1024 * 1024, 0xc0000000 + 24 * 1024 * 1024);
init_IRQ();
//体系结构和驱动的一些初始化过程
//run_initcall();
//为VFS分配一些大的内存块，用于哈希表。此过程必须在boot阶段分配。
//vfs_caches_init_early();
#ifdef FS
blk_dev_init();
inode_init();
file_table_init();
name_cache_init();
buffer_init_early();
#endif
memory_init();
#ifdef FS
buffer_init_tail();
tty_init();
#endif
sched_init();
time_init();
setup_timer();
serial_init();
//mmc_init();
//omap_gpio_init();
//初始化文件系统
//vfs_caches_init(num_physpages);
local_irq_enable();
//创建系统任务，以及用户任务入口
TaskEntry();
cpu_idle();
//不可能运行到这里来
BUG();
}
void
namei_init(void) {
START(namei,init);
nc = name_cache_init(4096,64);
name_cache_removefunc(namei_cache_remove_func);
#ifdef CACHEDLOOKUP
// kprintf("Namei with cached lookups\n");
#endif
assert(nc);
//atexit(pr_namei_stat);
STOP(namei,init);
}
asmlinkage void start_kernel(void)
{
char * command_line;
/*
* This little check will move.
*/
#ifdef __SMP__
static int first_cpu=1;
if(!first_cpu)
start_secondary();
first_cpu=0;
#endif
/*
* Interrupts are still disabled. Do necessary setups, then
* enable them
*/
setup_arch(&command_line, &memory_start, &memory_end);
memory_start = paging_init(memory_start,memory_end);
trap_init();
#ifndef CONFIG_OSFMACH3
init_IRQ();
#endif /* CONFIG_OSFMACH3 */
sched_init();
time_init();
parse_options(command_line);
#ifdef CONFIG_MODULES
init_modules();
#endif
#ifdef CONFIG_PROFILE
if (!prof_shift)
#ifdef CONFIG_PROFILE_SHIFT
prof_shift = CONFIG_PROFILE_SHIFT;
#else
prof_shift = 2;
#endif
#endif
if (prof_shift) {
prof_buffer = (unsigned int *) memory_start;
/* only text is profiled */
prof_len = (unsigned long) &_etext - (unsigned long) &_stext;
prof_len >>= prof_shift;
memory_start += prof_len * sizeof(unsigned int);
memset(prof_buffer, 0, prof_len * sizeof(unsigned int));
}
memory_start = console_init(memory_start,memory_end);
#ifdef CONFIG_PCI
memory_start = pci_init(memory_start,memory_end);
#endif
memory_start = kmalloc_init(memory_start,memory_end);
sti();
calibrate_delay();
memory_start = inode_init(memory_start,memory_end);
memory_start = file_table_init(memory_start,memory_end);
memory_start = name_cache_init(memory_start,memory_end);
#ifndef CONFIG_OSFMACH3
#ifdef CONFIG_BLK_DEV_INITRD
if (initrd_start && initrd_start < memory_start) {
printk(KERN_CRIT "initrd overwritten (0x%08lx < 0x%08lx) - "
"disabling it.\n",initrd_start,memory_start);
initrd_start = 0;
}
#endif
#endif /* CONFIG_OSFMACH3 */
mem_init(memory_start,memory_end);
buffer_init();
sock_init();
#if defined(CONFIG_SYSVIPC) || defined(CONFIG_KERNELD)
ipc_init();
#endif
dquot_init();
arch_syms_export();
sti();
check_bugs();
printk(linux_banner);
#ifdef __SMP__
smp_init();
#endif
sysctl_init();
/*
* We count on the initial thread going ok
* Like idlers init is an unlocked kernel thread, which will
* make syscalls (and thus be locked).
*/
#ifdef CONFIG_OSFMACH3
osfmach3_start_init(argv_init, envp_init);
#else /* CONFIG_OSFMACH3 */
kernel_thread(init, NULL, 0);
#endif /* CONFIG_OSFMACH3 */
/*
* task[0] is meant to be used as an "idle" task: it may not sleep, but
* it might do some general things like count free pages or it could be
* used to implement a reasonable LRU algorithm for the paging routines:
* anything that can be useful, but shouldn't take time from the real
* processes.
*
* Right now task[0] just does a infinite idle loop.
*/
cpu_idle(NULL);
}
void main ()
{
nc_t *namecache;
int value;
int ret;
printf("sizeof(nc_t) == %d\n", sizeof(nc_t));
printf("sizeof(nc_entry_t) == %d\n", sizeof(nc_entry_t));
namecache = name_cache_init (176, 2);
name_cache_printContents (namecache);
name_cache_addEntry (namecache, 1, "hello", 5, 42);
name_cache_printContents (namecache);
ret = name_cache_findEntry (namecache, 1, "hello", 5, &value);
assert ((ret == 1) && (value == 42));
printf("found simple entry\n");
ret = name_cache_findEntry (namecache, 1, "hello", 4, &value);
assert (ret == 0);
ret = name_cache_findEntry (namecache, 1, "hello", 6, &value);
assert (ret == 0);
ret = name_cache_findEntry (namecache, 2, "hello", 5, &value);
assert (ret == 0);
ret = name_cache_findEntry (namecache, 1, "hellp", 5, &value);
assert (ret == 0);
printf("didn't find it incorrectly\n");
name_cache_printContents (namecache);
name_cache_removeEntry (namecache, 1, "hello", 4);
name_cache_removeEntry (namecache, 1, "hello", 6);
name_cache_removeEntry (namecache, 2, "hello", 5);
name_cache_removeEntry (namecache, 1, "hellp", 5);
name_cache_printContents (namecache);
printf("was it removed incorrectly??\n");
name_cache_removeEntry (namecache, 1, "hello", 5);
name_cache_printContents (namecache);
printf("now it should be gone\n");
ret = name_cache_findEntry (namecache, 1, "hello", 5, &value);
assert (ret == 0);
printf("didn't find removed entry\n");
name_cache_addEntry (namecache, 1, "hello", 5, 42);
name_cache_printContents (namecache);
name_cache_addEntry (namecache, 3, "hello", 5, 42);
name_cache_printContents (namecache);
name_cache_addEntry (namecache, 2, "hello", 5, 42);
name_cache_printContents (namecache);
name_cache_addEntry (namecache, 2, "hello", 5, 42);
name_cache_printContents (namecache);
name_cache_addEntry (namecache, 2, "hello", 5, 43);
name_cache_printContents (namecache);
name_cache_removeEntry (namecache, 2, "hello", 5);
name_cache_printContents (namecache);
ret = name_cache_findEntry (namecache, 1, "hello", 5, &value);
printf("find 1 hello: ret %d, value %d\n", ret, value);
assert (ret == 1);
ret = name_cache_findEntry (namecache, 3, "hello", 5, &value);
printf("find 3 hello: ret %d, value %d\n", ret, value);
assert (ret == 1);
ret = name_cache_findEntry (namecache, 2, "hello", 5, &value);
printf("find 2 hello: ret %d, value %d\n", ret, value);
assert (ret == 0);
name_cache_addEntry (namecache, 5, "hello", 5, 47);
name_cache_printContents (namecache);
name_cache_addEntry (namecache, 7, "he lo", 4, 49);
name_cache_printContents (namecache);
ret = name_cache_findEntry (namecache, 1, "he lo", 4, &value);
assert (ret == 0);
name_cache_addEntry (namecache, 7, "hellothereworldhowyadoin", 24, 49);
name_cache_printContents (namecache);
name_cache_removeID (namecache, 7);
name_cache_printContents (namecache);
name_cache_addEntry (namecache, 7, "he lo", 4, 49);
name_cache_printContents (namecache);
name_cache_removeValue (namecache, 49);
name_cache_printContents (namecache);
name_cache_shutdown(namecache);
name_cache_addEntry (namecache, 6, "hello", 5, 67);
name_cache_addEntry (namecache, 7, "hello", 5, 77);
name_cache_printContents (namecache);
name_cache_addEntry (namecache, 8, "hello", 5, 87);
name_cache_printContents (namecache);
name_cache_addEntry (namecache, 6, "hello", 5, 87);
name_cache_printContents (namecache);
name_cache_removeValue (namecache, 87);
name_cache_printContents (namecache);
name_cache_printStats (namecache);
printf ("Done\n");
exit (0);
}
