Messages in this thread Patch in this message | | | Date | Mon, 06 Dec 2010 11:40:04 -0600 | From | Christoph Lameter <> | Subject | [cpuops inc_return V1 6/9] Taskstats: Use this_cpu_ops |
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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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