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    Subject[PATCH v3 5/9] kernel: padata : use __this_cpu_read per-cpu helper
    From: Shan Wei <davidshan@tencent.com>

    For bottom halves off, __this_cpu_read is better.

    Signed-off-by: Shan Wei <davidshan@tencent.com>
    ---
    v3: use __this_cpu_read instead of this_cpu_read.
    ---
    kernel/padata.c | 5 ++---
    1 files changed, 2 insertions(+), 3 deletions(-)

    diff --git a/kernel/padata.c b/kernel/padata.c
    index 89fe3d1..072f4ee 100644
    --- a/kernel/padata.c
    +++ b/kernel/padata.c
    @@ -171,7 +171,7 @@ static struct padata_priv *padata_get_next(struct parallel_data *pd)
    {
    int cpu, num_cpus;
    unsigned int next_nr, next_index;
    - struct padata_parallel_queue *queue, *next_queue;
    + struct padata_parallel_queue *next_queue;
    struct padata_priv *padata;
    struct padata_list *reorder;

    @@ -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) {
    padata = ERR_PTR(-ENODATA);
    goto out;
    }
    --
    1.7.1


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