基于arm的start_kernel()在哪里？

letmego163

如题。谢谢。我的内核是linux-2.6.32.2
以下是我用sourceinsight搜索出来的。我不敢确定是哪个。

1. ---- start_kernel Matches (49 in 30 files) ----
   
2. Boot.c (arch\x86\lguest):#include <linux/start_kernel.h>
   
3. Boot.c (arch\x86\lguest):         * start_kernel, so we have to do, too:
   
4. Bootp.c (arch\alpha\boot):start_kernel(void)
   
5. Bootpz.c (arch\alpha\boot):start_kernel(void)
   
6. Core.c (drivers\lguest\x86):#include <linux/start_kernel.h>
   
7. Debug-stub.c (arch\frv\kernel):#include <linux/start_kernel.h>
   
8. Debug-stub.c (arch\frv\kernel):                __debug_frame->pc = (unsigned long) start_kernel;
   
9. Debug.c (arch\m68k\mac): * that is called from start_kernel() before setup_arch() and just registers
   
10. Debugging390.txt (documentation\s390):00014a78 T start_kernel  
    
11. Debugging390.txt (documentation\s390):so 0014CA6 is start_kernel+some hex number I can't add in my head.
    
12. Enlighten.c (arch\x86\xen):#include <linux/start_kernel.h>
    
13. Gdb-stub.c (arch\mn10300\kernel):                regs->pc = (unsigned long) start_kernel;
    
14. Gdbstub.txt (documentation\frv):      the beginning of start_kernel() in init/main.c.
    
15. Gdbstub.txt (documentation\frv):        start_kernel () at init/main.c:395
    
16. head-common.S (arch\arm\kernel):        b        start_kernel
    
17. head-nommu.S (arch\arm\kernel):                                                @ to start_kernel
    
18. Head32.c (arch\x86\kernel):#include <linux/start_kernel.h>
    
19. Head32.c (arch\x86\kernel):        start_kernel();
    
20. Head64.c (arch\x86\kernel):#include <linux/start_kernel.h>
    
21. Head64.c (arch\x86\kernel):        start_kernel();
    
22. Init.c (arch\sh\kernel\cpu): * CPU prior to calling start_kernel(). For SMP, a combination of this and
    
23. Init.c (arch\sh\kernel\cpu): * caches, FPU, DSP, kicking the UBC, etc. By the time start_kernel() is
    
24. Irq.c (arch\cris\arch-v10\kernel):/* init_IRQ() is called by start_kernel and is responsible for fixing IRQ masks and
    
25. Irq.c (arch\cris\arch-v32\kernel): * This is called by start_kernel. It fixes the IRQ masks and setup the
    
26. Lockdep.c (kernel):         * Some architectures have their own start_kernel()
    
27. Lockdep.c (kernel):         * call lockdep_init() from the start_kernel() itself,
    
28. Main.c (arch\alpha\boot):void start_kernel(void)
    
29. Main.c (init):#include <linux/start_kernel.h>

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1. Main.c (init): * between the root thread and the init thread may cause start_kernel to
   
2. Main.c (init):asmlinkage void __init start_kernel(void)
   
3. Main.c (init):                printk(KERN_WARNING "start_kernel(): bug: interrupts were "
   
4. Main.c (init):                printk(KERN_CRIT "start_kernel(): bug: interrupts were "
   
5. Paravirt_ops.txt (documentation\ia64):Those structures must be initialized very early before start_kernel.
   
6. Process.c (arch\um\kernel\skas):extern void start_kernel(void);
   
7. Process.c (arch\um\kernel\skas):        start_kernel();
   
8. Sched.h (include\linux): * Reset by start_kernel()->sched_init()->init_idle().
   
9. Setup.c (arch\ia64\kernel):        /* start_kernel() requires this... */
   
10. Setup.c (arch\ia64\sn\kernel): * for bringup.  See start_kernel() in init/main.c.
    
11. Setup.c (arch\parisc\kernel):        ** called by start_kernel(). In other words, this code can't
    
12. Setup.c (arch\parisc\kernel):        ** start_kernel().
    
13. Setup.c (arch\parisc\kernel):        extern void start_kernel(void);
    
14. Setup.c (arch\parisc\kernel):        start_kernel();
    
15. Setup_64.c (arch\powerpc\kernel): * Called into from start_kernel, after lock_kernel has been called.
    
16. Smp.c (arch\parisc\kernel): * Do what start_kernel() and main() do for boot strap processor (aka monarch)
    
17. Start_kernel.h (include\linux):/* Define the prototype for start_kernel here, rather than cluttering
    
18. Start_kernel.h (include\linux):extern asmlinkage void __init start_kernel(void);
    
19. UserModeLinux-HOWTO.txt (documentation\uml):  to gdb which will leave it stopped at the beginning of start_kernel.
    
20. UserModeLinux-HOWTO.txt (documentation\uml):  it when it stops in start_kernel and make it crash.  Now ^C gdb and
    
21. UserModeLinux-HOWTO.txt (documentation\uml):       #4  0x100ec18f in start_kernel () at init/main.c:592
    

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letmego163

我认为是这个 Main.c (init):asmlinkage void __init start_kernel(void)


init/main.c

1. asmlinkage void __init start_kernel(void)
   
2. {
   
3.         char * command_line;
   
4.         extern struct kernel_param __start___param[], __stop___param[];
   
5. 
   
6.         smp_setup_processor_id();
   
7. 
   
8.         /*
   
9.          * Need to run as early as possible, to initialize the
   
10.          * lockdep hash:
    
11.          */
    
12.         lockdep_init();
    
13.         debug_objects_early_init();
    
14. 
    
15.         /*
    
16.          * Set up the the initial canary ASAP:
    
17.          */
    
18.         boot_init_stack_canary();
    
19. 
    
20.         cgroup_init_early();
    
21. 
    
22.         local_irq_disable();
    
23.         early_boot_irqs_off();
    
24.         early_init_irq_lock_class();
    
25. 
    
26. /*
    
27. * Interrupts are still disabled. Do necessary setups, then
    
28. * enable them
    
29. */
    
30.         lock_kernel();
    
31.         tick_init();
    
32.         boot_cpu_init();
    
33.         page_address_init();
    
34.         printk(KERN_NOTICE "%s", linux_banner);
    
35.         setup_arch(&command_line);
    
36.         mm_init_owner(&init_mm, &init_task);
    
37.         setup_command_line(command_line);
    
38.         setup_nr_cpu_ids();
    
39.         setup_per_cpu_areas();
    
40.         smp_prepare_boot_cpu();        /* arch-specific boot-cpu hooks */
    
41. 
    
42.         build_all_zonelists();
    
43.         page_alloc_init();
    
44. 
    
45.         printk(KERN_NOTICE "Kernel command line: %s\n", boot_command_line);
    
46.         parse_early_param();
    
47.         parse_args("Booting kernel", static_command_line, __start___param,
    
48.                    __stop___param - __start___param,
    
49.                    &unknown_bootoption);
    
50.         /*
    
51.          * These use large bootmem allocations and must precede
    
52.          * kmem_cache_init()
    
53.          */
    
54.         pidhash_init();
    
55.         vfs_caches_init_early();
    
56.         sort_main_extable();
    
57.         trap_init();
    
58.         mm_init();
    
59.         /*
    
60.          * Set up the scheduler prior starting any interrupts (such as the
    
61.          * timer interrupt). Full topology setup happens at smp_init()
    
62.          * time - but meanwhile we still have a functioning scheduler.
    
63.          */
    
64.         sched_init();
    
65.         /*
    
66.          * Disable preemption - early bootup scheduling is extremely
    
67.          * fragile until we cpu_idle() for the first time.
    
68.          */
    
69.         preempt_disable();
    
70.         if (!irqs_disabled()) {
    
71.                 printk(KERN_WARNING "start_kernel(): bug: interrupts were "
    
72.                                 "enabled *very* early, fixing it\n");
    
73.                 local_irq_disable();
    
74.         }
    
75.         rcu_init();
    
76.         /* init some links before init_ISA_irqs() */
    
77.         early_irq_init();
    
78.         init_IRQ();
    
79.         prio_tree_init();
    
80.         init_timers();
    
81.         hrtimers_init();
    
82.         softirq_init();
    
83.         timekeeping_init();
    
84.         time_init();
    
85.         profile_init();
    
86.         if (!irqs_disabled())
    
87.                 printk(KERN_CRIT "start_kernel(): bug: interrupts were "
    
88.                                  "enabled early\n");
    
89.         early_boot_irqs_on();
    
90.         local_irq_enable();
    
91. 
    
92.         /* Interrupts are enabled now so all GFP allocations are safe. */
    
93.         set_gfp_allowed_mask(__GFP_BITS_MASK);
    
94. 
    
95.         kmem_cache_init_late();
    
96. 
    
97.         /*
    
98.          * HACK ALERT! This is early. We're enabling the console before
    
99.          * we've done PCI setups etc, and console_init() must be aware of
    
100.          * this. But we do want output early, in case something goes wrong.
     
101.          */
     
102.         console_init();
     
103.         if (panic_later)
     
104.                 panic(panic_later, panic_param);
     
105. 
     
106.         lockdep_info();
     
107. 
     
108.         /*
     
109.          * Need to run this when irqs are enabled, because it wants
     
110.          * to self-test [hard/soft]-irqs on/off lock inversion bugs
     
111.          * too:
     
112.          */
     
113.         locking_selftest();
     
114. 
     
115. #ifdef CONFIG_BLK_DEV_INITRD
     
116.         if (initrd_start && !initrd_below_start_ok &&
     
117.             page_to_pfn(virt_to_page((void *)initrd_start)) < min_low_pfn) {
     
118.                 printk(KERN_CRIT "initrd overwritten (0x%08lx < 0x%08lx) - "
     
119.                     "disabling it.\n",
     
120.                     page_to_pfn(virt_to_page((void *)initrd_start)),
     
121.                     min_low_pfn);
     
122.                 initrd_start = 0;
     
123.         }
     
124. #endif
     
125.         page_cgroup_init();
     
126.         enable_debug_pagealloc();
     
127.         kmemtrace_init();
     
128.         kmemleak_init();
     
129.         debug_objects_mem_init();
     
130.         idr_init_cache();
     
131.         setup_per_cpu_pageset();
     
132.         numa_policy_init();
     
133.         if (late_time_init)
     
134.                 late_time_init();
     
135.         sched_clock_init();
     
136.         calibrate_delay();
     
137.         pidmap_init();
     
138.         anon_vma_init();
     
139. #ifdef CONFIG_X86
     
140.         if (efi_enabled)
     
141.                 efi_enter_virtual_mode();
     
142. #endif
     
143.         thread_info_cache_init();
     
144.         cred_init();
     
145.         fork_init(totalram_pages);
     
146.         proc_caches_init();
     
147.         buffer_init();
     
148.         key_init();
     
149.         security_init();
     
150.         vfs_caches_init(totalram_pages);
     
151.         radix_tree_init();
     
152.         signals_init();
     
153.         /* rootfs populating might need page-writeback */
     
154.         page_writeback_init();
     
155. #ifdef CONFIG_PROC_FS
     
156.         proc_root_init();
     
157. #endif
     
158.         cgroup_init();
     
159.         cpuset_init();
     
160.         taskstats_init_early();
     
161.         delayacct_init();
     
162. 
     
163.         check_bugs();
     
164. 
     
165.         acpi_early_init(); /* before LAPIC and SMP init */
     
166.         sfi_init_late();
     
167. 
     
168.         ftrace_init();
     
169. 
     
170.         /* Do the rest non-__init'ed, we're now alive */
     
171.         rest_init();
     
172. }

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daiban

楼上正解。至少2.4.x内核是这个函数。

ljjk

呵呵
一般都是 init/main.c里的start_kernel