get_seq can benefit from this_cpu_operations. Address calculation is avoided and the increment is done using an xadd. Cc: Scott James Remnant Cc: Mike Frysinger Signed-off-by: Christoph Lameter --- drivers/connector/cn_proc.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) Index: linux-2.6/drivers/connector/cn_proc.c =================================================================== --- linux-2.6.orig/drivers/connector/cn_proc.c 2010-11-30 09:38:33.000000000 -0600 +++ linux-2.6/drivers/connector/cn_proc.c 2010-11-30 09:39:38.000000000 -0600 @@ -43,9 +43,10 @@ static DEFINE_PER_CPU(__u32, proc_event_ static inline void get_seq(__u32 *ts, int *cpu) { - *ts = get_cpu_var(proc_event_counts)++; + preempt_disable(); + *ts = __this_cpu_inc(proc_event_counts); *cpu = smp_processor_id(); - put_cpu_var(proc_event_counts); + preempt_enable(); } void proc_fork_connector(struct task_struct *task) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/