rcu: Optimize the 'rcu_pending' for RCU trace
authorMichael Wang <wangyun@linux.vnet.ibm.com>
Thu, 20 Sep 2012 00:51:06 +0000 (08:51 +0800)
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Thu, 8 Nov 2012 19:50:17 +0000 (11:50 -0800)
commit51d0f16d49f6a99189e80c50e18a12325664ef41
tree2d7e28e39eff3d1d169ccca95e18a0f06cc574af
parentd29200efa2ad7a1dc516a1048faf98dcc01b9fef
rcu: Optimize the 'rcu_pending' for RCU trace

This patch implements the new 'rcu_pending' interface under each rsp
directory, by using the 'CPU units sequence reading', thus avoiding loss
of tracing data.

Signed-off-by: Michael Wang <wangyun@linux.vnet.ibm.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
kernel/rcutree_trace.c