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    Subject[cpuops inc_return V1 6/9] Taskstats: Use this_cpu_ops
    Use this_cpu_inc_return in one place and avoid ugly __raw_get_cpu in another.

    V3->V4:
    - Fix off by one.

    Cc: Michael Holzheu <holzheu@linux.vnet.ibm.com>
    Signed-off-by: Christoph Lameter <cl@linux.com>

    ---
    kernel/taskstats.c | 5 ++---
    1 file changed, 2 insertions(+), 3 deletions(-)

    Index: linux-2.6/kernel/taskstats.c
    ===================================================================
    --- linux-2.6.orig/kernel/taskstats.c 2010-11-30 10:06:35.000000000 -0600
    +++ linux-2.6/kernel/taskstats.c 2010-11-30 10:10:14.000000000 -0600
    @@ -89,8 +89,7 @@ static int prepare_reply(struct genl_inf
    return -ENOMEM;

    if (!info) {
    - int seq = get_cpu_var(taskstats_seqnum)++;
    - put_cpu_var(taskstats_seqnum);
    + int seq = this_cpu_inc_return(taskstats_seqnum) - 1;

    reply = genlmsg_put(skb, 0, seq, &family, 0, cmd);
    } else
    @@ -581,7 +580,7 @@ void taskstats_exit(struct task_struct *
    fill_tgid_exit(tsk);
    }

    - listeners = &__raw_get_cpu_var(listener_array);
    + listeners = __this_cpu_ptr(listener_array);
    if (list_empty(&listeners->list))
    return;



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