diff options
| -rw-r--r-- | arch/x86/kernel/cpu/common.c | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/dumpstack_64.c | 9 | ||||
| -rw-r--r-- | arch/x86/kernel/setup_percpu.c | 2 |
3 files changed, 5 insertions, 8 deletions
diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index 809eda03c527..6ef55e83fb8a 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -1281,7 +1281,7 @@ DEFINE_PER_CPU(struct task_struct *, current_task) ____cacheline_aligned = EXPORT_PER_CPU_SYMBOL(current_task); DEFINE_PER_CPU(char *, irq_stack_ptr) = - init_per_cpu_var(irq_stack_union.irq_stack) + IRQ_STACK_SIZE - 64; + init_per_cpu_var(irq_stack_union.irq_stack) + IRQ_STACK_SIZE; DEFINE_PER_CPU(unsigned int, irq_count) __visible = -1; diff --git a/arch/x86/kernel/dumpstack_64.c b/arch/x86/kernel/dumpstack_64.c index daf9f6321856..066eb5c77fd6 100644 --- a/arch/x86/kernel/dumpstack_64.c +++ b/arch/x86/kernel/dumpstack_64.c @@ -103,9 +103,6 @@ in_irq_stack(unsigned long *stack, unsigned long *irq_stack, return (stack >= irq_stack && stack < irq_stack_end); } -static const unsigned long irq_stack_size = - (IRQ_STACK_SIZE - 64) / sizeof(unsigned long); - enum stack_type { STACK_IS_UNKNOWN, STACK_IS_NORMAL, @@ -133,7 +130,7 @@ analyze_stack(int cpu, struct task_struct *task, unsigned long *stack, return STACK_IS_NORMAL; *stack_end = irq_stack; - irq_stack = irq_stack - irq_stack_size; + irq_stack -= (IRQ_STACK_SIZE / sizeof(long)); if (in_irq_stack(stack, irq_stack, *stack_end)) return STACK_IS_IRQ; @@ -256,8 +253,8 @@ show_stack_log_lvl(struct task_struct *task, struct pt_regs *regs, preempt_disable(); cpu = smp_processor_id(); - irq_stack_end = (unsigned long *)(per_cpu(irq_stack_ptr, cpu)); - irq_stack = (unsigned long *)(per_cpu(irq_stack_ptr, cpu) - IRQ_STACK_SIZE); + irq_stack_end = (unsigned long *)(per_cpu(irq_stack_ptr, cpu)); + irq_stack = irq_stack_end - (IRQ_STACK_SIZE / sizeof(long)); /* * Debugging aid: "show_stack(NULL, NULL);" prints the diff --git a/arch/x86/kernel/setup_percpu.c b/arch/x86/kernel/setup_percpu.c index 7a40e068302d..d182799c4264 100644 --- a/arch/x86/kernel/setup_percpu.c +++ b/arch/x86/kernel/setup_percpu.c @@ -246,7 +246,7 @@ void __init setup_per_cpu_areas(void) #ifdef CONFIG_X86_64 per_cpu(irq_stack_ptr, cpu) = per_cpu(irq_stack_union.irq_stack, cpu) + - IRQ_STACK_SIZE - 64; + IRQ_STACK_SIZE; #endif #ifdef CONFIG_NUMA per_cpu(x86_cpu_to_node_map, cpu) = |