• P
    rcu: Simplify RCU CPU-hotplug notification · 2e597558
    Paul E. McKenney 提交于
    Use the new cpu_notifier() API to simplify RCU's CPU-hotplug
    notifiers, collapsing down to a single such notifier.
    
    This makes it trivial to provide the notifier-ordering
    guarantee that rcu_barrier() depends on.
    
    Also remove redundant open_softirq() calls from Hierarchical
    RCU notifier.
    Signed-off-by: NPaul E. McKenney <paulmck@linux.vnet.ibm.com>
    Cc: laijs@cn.fujitsu.com
    Cc: dipankar@in.ibm.com
    Cc: josht@linux.vnet.ibm.com
    Cc: akpm@linux-foundation.org
    Cc: mathieu.desnoyers@polymtl.ca
    Cc: dvhltc@us.ibm.com
    Cc: niv@us.ibm.com
    Cc: peterz@infradead.org
    Cc: rostedt@goodmis.org
    Cc: hugh.dickins@tiscali.co.uk
    Cc: benh@kernel.crashing.org
    LKML-Reference: <12503552312510-git-send-email->
    Signed-off-by: NIngo Molnar <mingo@elte.hu>
    2e597558
rcutree.c 44.4 KB