| commit | 779de6ce54f627f955d4a3d0c5b3dcfaab74fea8 | [log] [tgz] |
|---|---|---|
| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | Wed Jun 10 13:34:41 2015 -0700 |
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | Wed Jul 22 15:27:30 2015 -0700 |
| tree | 970e26e9d25d2beab184fb7c87e8ff1c5d348023 | |
| parent | ec90a194ae2cb8b8e9fe4f6f70dd3d4dc0269b4b [diff] |
cpu: Wait for RCU grace periods concurrently In kernels built with CONFIG_PREEMPT, _cpu_down() waits for RCU and RCU-sched grace periods back-to-back, incurring quite a bit more latency than required. This commit therefore uses the new synchronize_rcu_mult() to allow waiting for both grace periods concurrently. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>