Re: [PATCH v2 5/9] kernel: padata : use this_cpu_read per-cpu helper

2012-11-03 Thread Steffen Klassert 
  
 @@ -204,8 +204,7 @@ static struct padata_priv *padata_get_next(struct 
 parallel_data *pd)
   goto out;
   }
  
 - queue = per_cpu_ptr(pd-pqueue, smp_processor_id());
 - if (queue-cpu_index == next_queue-cpu_index) {
 + if (this_cpu_read(pd-pqueue-cpu_index) == next_queue-cpu_index) {

This runs with bottom halves off, so we can use __this_cpu_read here.
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Re: [PATCH v2 5/9] kernel: padata : use this_cpu_read per-cpu helper

2012-11-02 Thread Christoph Lameter 
On Sat, 3 Nov 2012, Shan Wei wrote:

 - queue = per_cpu_ptr(pd-pqueue, smp_processor_id());
 - if (queue-cpu_index == next_queue-cpu_index) {
 + if (this_cpu_read(pd-pqueue-cpu_index) == next_queue-cpu_index) {
   padata = ERR_PTR(-ENODATA);

Reviewed-by: Christoph Lameter c...@linux.com

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