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authorHirokazu Takata <takata@linux-m32r.org>2005-10-14 15:59:07 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2005-10-14 17:10:12 -0700
commita90933fb4e7b85587e5cbdf863deeb16695c19bd (patch)
treeb27be41b3412d5ffdc90b3f7d76f2a2aa25662f5 /arch/m32r/kernel/smp.c
parent6593b58cfb54138781c5cd88f605e2ae663301b0 (diff)
[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>
Diffstat (limited to 'arch/m32r/kernel/smp.c')
-rw-r--r--arch/m32r/kernel/smp.c12
1 files changed, 8 insertions, 4 deletions
diff --git a/arch/m32r/kernel/smp.c b/arch/m32r/kernel/smp.c
index a4576ac7e870..8b1f6eb76870 100644
--- a/arch/m32r/kernel/smp.c
+++ b/arch/m32r/kernel/smp.c
@@ -275,12 +275,14 @@ static void flush_tlb_all_ipi(void *info)
*==========================================================================*/
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_range(struct vm_area_struct *vma, unsigned long start,
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);