aboutsummaryrefslogtreecommitdiffstats
path: root/init/main.c
diff options
context:
space:
mode:
Diffstat (limited to 'init/main.c')
-rw-r--r--init/main.c86
1 files changed, 47 insertions, 39 deletions
diff --git a/init/main.c b/init/main.c
index 4e9e92bb2b89..2421e1544127 100644
--- a/init/main.c
+++ b/init/main.c
@@ -86,7 +86,6 @@ extern void init_IRQ(void);
86extern void fork_init(unsigned long); 86extern void fork_init(unsigned long);
87extern void mca_init(void); 87extern void mca_init(void);
88extern void sbus_init(void); 88extern void sbus_init(void);
89extern void sysctl_init(void);
90extern void signals_init(void); 89extern void signals_init(void);
91extern void pidhash_init(void); 90extern void pidhash_init(void);
92extern void pidmap_init(void); 91extern void pidmap_init(void);
@@ -702,8 +701,8 @@ static void __init do_basic_setup(void)
702 usermodehelper_init(); 701 usermodehelper_init();
703 driver_init(); 702 driver_init();
704 703
705#ifdef CONFIG_SYSCTL 704#ifdef CONFIG_PROC_FS
706 sysctl_init(); 705 init_irq_proc();
707#endif 706#endif
708 707
709 do_initcalls(); 708 do_initcalls();
@@ -727,7 +726,49 @@ static void run_init_process(char *init_filename)
727 kernel_execve(init_filename, argv_init, envp_init); 726 kernel_execve(init_filename, argv_init, envp_init);
728} 727}
729 728
730static int init(void * unused) 729/* This is a non __init function. Force it to be noinline otherwise gcc
730 * makes it inline to init() and it becomes part of init.text section
731 */
732static int noinline init_post(void)
733{
734 free_initmem();
735 unlock_kernel();
736 mark_rodata_ro();
737 system_state = SYSTEM_RUNNING;
738 numa_default_policy();
739
740 if (sys_open((const char __user *) "/dev/console", O_RDWR, 0) < 0)
741 printk(KERN_WARNING "Warning: unable to open an initial console.\n");
742
743 (void) sys_dup(0);
744 (void) sys_dup(0);
745
746 if (ramdisk_execute_command) {
747 run_init_process(ramdisk_execute_command);
748 printk(KERN_WARNING "Failed to execute %s\n",
749 ramdisk_execute_command);
750 }
751
752 /*
753 * We try each of these until one succeeds.
754 *
755 * The Bourne shell can be used instead of init if we are
756 * trying to recover a really broken machine.
757 */
758 if (execute_command) {
759 run_init_process(execute_command);
760 printk(KERN_WARNING "Failed to execute %s. Attempting "
761 "defaults...\n", execute_command);
762 }
763 run_init_process("/sbin/init");
764 run_init_process("/etc/init");
765 run_init_process("/bin/init");
766 run_init_process("/bin/sh");
767
768 panic("No init found. Try passing init= option to kernel.");
769}
770
771static int __init init(void * unused)
731{ 772{
732 lock_kernel(); 773 lock_kernel();
733 /* 774 /*
@@ -775,39 +816,6 @@ static int init(void * unused)
775 * we're essentially up and running. Get rid of the 816 * we're essentially up and running. Get rid of the
776 * initmem segments and start the user-mode stuff.. 817 * initmem segments and start the user-mode stuff..
777 */ 818 */
778 free_initmem(); 819 init_post();
779 unlock_kernel(); 820 return 0;
780 mark_rodata_ro();
781 system_state = SYSTEM_RUNNING;
782 numa_default_policy();
783
784 if (sys_open((const char __user *) "/dev/console", O_RDWR, 0) < 0)
785 printk(KERN_WARNING "Warning: unable to open an initial console.\n");
786
787 (void) sys_dup(0);
788 (void) sys_dup(0);
789
790 if (ramdisk_execute_command) {
791 run_init_process(ramdisk_execute_command);
792 printk(KERN_WARNING "Failed to execute %s\n",
793 ramdisk_execute_command);
794 }
795
796 /*
797 * We try each of these until one succeeds.
798 *
799 * The Bourne shell can be used instead of init if we are
800 * trying to recover a really broken machine.
801 */
802 if (execute_command) {
803 run_init_process(execute_command);
804 printk(KERN_WARNING "Failed to execute %s. Attempting "
805 "defaults...\n", execute_command);
806 }
807 run_init_process("/sbin/init");
808 run_init_process("/etc/init");
809 run_init_process("/bin/init");
810 run_init_process("/bin/sh");
811
812 panic("No init found. Try passing init= option to kernel.");
813} 821}