On Wed, Sep 28, 2011 at 04:34:31PM +0800, Lai Jiangshan wrote: > Signed-off-by: Lai Jiangshan <[email protected]>
Nice optimization!!! Reviewed-by: Paul E. McKenney <[email protected]> > --- > urcu-call-rcu-impl.h | 4 ++++ > 1 files changed, 4 insertions(+), 0 deletions(-) > > diff --git a/urcu-call-rcu-impl.h b/urcu-call-rcu-impl.h > index 87d9157..65c1c7a 100644 > --- a/urcu-call-rcu-impl.h > +++ b/urcu-call-rcu-impl.h > @@ -675,6 +675,10 @@ void call_rcu_after_fork_child(void) > /* Release the mutex. */ > call_rcu_unlock(&call_rcu_mutex); > > + /* Do nothing when call_rcu() has not been used */ > + if (cds_list_empty(&call_rcu_data_list)) > + return; > + > /* > * Allocate a new default call_rcu_data structure in order > * to get a working call_rcu thread to go with it. > -- > 1.7.4.4 > _______________________________________________ ltt-dev mailing list [email protected] http://lists.casi.polymtl.ca/cgi-bin/mailman/listinfo/ltt-dev
