• Lai Jiangshan's avatar
    rcu: Cleanup: balance rcu_irq_enter()/rcu_irq_exit() calls · c5e0cb3d
    Lai Jiangshan authored
    Currently, rcu_irq_exit() is invoked only for CONFIG_NO_HZ,
    while rcu_irq_enter() is invoked unconditionally.  This patch
    moves rcu_irq_exit() out from under CONFIG_NO_HZ so that the
    calls are balanced.
    
    This patch has no effect on the behavior of the kernel because
    both rcu_irq_enter() and rcu_irq_exit() are empty for
    !CONFIG_NO_HZ, but the code is easier to understand if the calls
    are obviously balanced in all cases.
    Signed-off-by: default avatarLai Jiangshan <laijs@cn.fujitsu.com>
    Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
    Cc: dipankar@in.ibm.com
    Cc: mathieu.desnoyers@polymtl.ca
    Cc: josh@joshtriplett.org
    Cc: dvhltc@us.ibm.com
    Cc: niv@us.ibm.com
    Cc: peterz@infradead.org
    Cc: rostedt@goodmis.org
    Cc: Valdis.Kletnieks@vt.edu
    Cc: dhowells@redhat.com
    LKML-Reference: <12567428891605-git-send-email->
    Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
    c5e0cb3d
softirq.c 21.4 KB