[PATCH] m32r: Fix smp.c for preempt kernel
This patch fixes the following BUG message of arch/m32r/smp.c for
CONFIG_DEBUG_PREEMPT:
BUG: using smp_processor_id() in preemptible
This message is displayed by an smp_processor_id() execution during
kernel's preemptible-state.
Signed-off-by: Hitoshi Yamamoto <hitoshiy@isl.melco.co.jp>
Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/arch/m32r/kernel/smp.c b/arch/m32r/kernel/smp.c
index a4576ac..8b1f6eb 100644
--- a/arch/m32r/kernel/smp.c
+++ b/arch/m32r/kernel/smp.c
@@ -275,12 +275,14 @@
*==========================================================================*/
void smp_flush_tlb_mm(struct mm_struct *mm)
{
- int cpu_id = smp_processor_id();
+ int cpu_id;
cpumask_t cpu_mask;
- unsigned long *mmc = &mm->context[cpu_id];
+ unsigned long *mmc;
unsigned long flags;
preempt_disable();
+ cpu_id = smp_processor_id();
+ mmc = &mm->context[cpu_id];
cpu_mask = mm->cpu_vm_mask;
cpu_clear(cpu_id, cpu_mask);
@@ -343,12 +345,14 @@
void smp_flush_tlb_page(struct vm_area_struct *vma, unsigned long va)
{
struct mm_struct *mm = vma->vm_mm;
- int cpu_id = smp_processor_id();
+ int cpu_id;
cpumask_t cpu_mask;
- unsigned long *mmc = &mm->context[cpu_id];
+ unsigned long *mmc;
unsigned long flags;
preempt_disable();
+ cpu_id = smp_processor_id();
+ mmc = &mm->context[cpu_id];
cpu_mask = mm->cpu_vm_mask;
cpu_clear(cpu_id, cpu_mask);