diff options
Diffstat (limited to 'arch/arm/kernel/setup.c')
| -rw-r--r-- | arch/arm/kernel/setup.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c index 1522c7a..0cde326 100644 --- a/arch/arm/kernel/setup.c +++ b/arch/arm/kernel/setup.c @@ -444,7 +444,7 @@ void notrace cpu_init(void) : "r14"); } -int __cpu_logical_map[NR_CPUS]; +u32 __cpu_logical_map[NR_CPUS] = { [0 ... NR_CPUS-1] = MPIDR_INVALID }; void __init smp_setup_processor_id(void) { @@ -456,6 +456,13 @@ void __init smp_setup_processor_id(void) for (i = 1; i < nr_cpu_ids; ++i) cpu_logical_map(i) = i == cpu ? 0 : i; + /* + * clear __my_cpu_offset on boot CPU to avoid hang caused by + * using percpu variable early, for example, lockdep will + * access percpu variable inside lock_release + */ + set_my_cpu_offset(0); + printk(KERN_INFO "Booting Linux on physical CPU 0x%x\n", mpidr); } |