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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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