Commit 44fd2299 authored by Stas Sergeev's avatar Stas Sergeev Committed by Linus Torvalds
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[PATCH] Register the boot-cpu in the cpu maps earlier

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: default avatarStas Sergeev <>
Signed-off-by: default avatarAndrew Morton <>
Signed-off-by: default avatarLinus Torvalds <>
parent ffa930ef
......@@ -438,6 +438,15 @@ void __init parse_early_param(void)
* 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)
char * command_line;
......@@ -447,17 +456,13 @@ asmlinkage void __init start_kernel(void)
* enable them
* 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(); /* arch-specific boot-cpu hooks */
* Set up the scheduler prior starting any interrupts (such as the
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