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path: root/drivers/oprofile
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Diffstat (limited to 'drivers/oprofile')
-rw-r--r--drivers/oprofile/cpu_buffer.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/oprofile/cpu_buffer.c b/drivers/oprofile/cpu_buffer.c
index 5a178065cfa0..67bcc1c95e60 100644
--- a/drivers/oprofile/cpu_buffer.c
+++ b/drivers/oprofile/cpu_buffer.c
@@ -39,7 +39,7 @@ void free_cpu_buffers(void)
{
int i;
- for_each_online_cpu(i) {
+ for_each_possible_cpu(i) {
vfree(per_cpu(cpu_buffer, i).buffer);
per_cpu(cpu_buffer, i).buffer = NULL;
}
@@ -51,7 +51,7 @@ int alloc_cpu_buffers(void)
unsigned long buffer_size = fs_cpu_buffer_size;
- for_each_online_cpu(i) {
+ for_each_possible_cpu(i) {
struct oprofile_cpu_buffer *b = &per_cpu(cpu_buffer, i);
b->buffer = vmalloc_node(sizeof(struct op_sample) * buffer_size,
@@ -350,6 +350,11 @@ static void wq_sync_buffer(struct work_struct *work)
if (b->cpu != smp_processor_id()) {
printk(KERN_DEBUG "WQ on CPU%d, prefer CPU%d\n",
smp_processor_id(), b->cpu);
+
+ if (!cpu_online(b->cpu)) {
+ cancel_delayed_work(&b->work);
+ return;
+ }
}
sync_buffer(b->cpu);