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[PATCH] Register the boot-cpu in the cpu maps earlier

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Register the boot-cpu in the cpu maps earlier to allow the early printk to
work, and to fix an obscure deadlock at boot.

Signed-off-by: Stas Sergeev <stsp@aknet.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Stas Sergeev 2006-03-23 02:59:44 -08:00 committed by Linus Torvalds
parent ffa930ef55
commit 44fd22992c
1 changed files with 11 additions and 6 deletions
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17
init/main.c
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@ -438,6 +438,15 @@ void __init parse_early_param(void)
* Activate the first processor. * Activate the first processor.
*/ */
static void __init boot_cpu_init(void)
{
int cpu = smp_processor_id();
/* Mark the boot cpu "present", "online" etc for SMP and UP case */
cpu_set(cpu, cpu_online_map);
cpu_set(cpu, cpu_present_map);
cpu_set(cpu, cpu_possible_map);
}
asmlinkage void __init start_kernel(void) asmlinkage void __init start_kernel(void)
{ {
char * command_line; char * command_line;
@ -447,17 +456,13 @@ asmlinkage void __init start_kernel(void)
* enable them * enable them
*/ */
lock_kernel(); lock_kernel();
boot_cpu_init();
page_address_init(); page_address_init();
printk(KERN_NOTICE); printk(KERN_NOTICE);
printk(linux_banner); printk(linux_banner);
setup_arch(&command_line); setup_arch(&command_line);
setup_per_cpu_areas(); setup_per_cpu_areas();
smp_prepare_boot_cpu(); /* arch-specific boot-cpu hooks */
/*
* Mark the boot cpu "online" so that it can call console drivers in
* printk() and can access its per-cpu storage.
*/
smp_prepare_boot_cpu();
/* /*
* Set up the scheduler prior starting any interrupts (such as the * Set up the scheduler prior starting any interrupts (such as the