| Message ID | 1366940708-10180-2-git-send-email-horms@verge.net.au |
|---|---|
| State | Not Applicable, archived |
| Delegated to: | David Miller |
| Headers | show |
* Simon Horman <horms@verge.net.au> wrote: > This is intended for use in loops which read data protected by RCU and may > have a large number of iterations. Such an example is dumping the list of > connections known to IPVS: ip_vs_conn_array() and ip_vs_conn_seq_next(). > > As suggested by Eric Dumazet. > > Cc: Eric Dumazet <eric.dumazet@gmail.com> > Cc: Julian Anastasov <ja@ssi.bg> > Signed-off-by: Simon Horman <horms@verge.net.au> > --- > include/linux/sched.h | 9 +++++++++ > 1 file changed, 9 insertions(+) > > diff --git a/include/linux/sched.h b/include/linux/sched.h > index e692a02..7eec4c7 100644 > --- a/include/linux/sched.h > +++ b/include/linux/sched.h > @@ -2787,3 +2787,12 @@ static inline unsigned long rlimit_max(unsigned int limit) > } > > #endif > + > +static void inline cond_resched_rcu_lock(void) > +{ > + if (need_resched()) { > + rcu_read_unlock(); > + cond_resched(); > + rcu_read_lock(); > + } > +} Acked-by: Ingo Molnar <mingo@kernel.org> Ingo -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/include/linux/sched.h b/include/linux/sched.h index e692a02..7eec4c7 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -2787,3 +2787,12 @@ static inline unsigned long rlimit_max(unsigned int limit) } #endif + +static void inline cond_resched_rcu_lock(void) +{ + if (need_resched()) { + rcu_read_unlock(); + cond_resched(); + rcu_read_lock(); + } +}
This is intended for use in loops which read data protected by RCU and may have a large number of iterations. Such an example is dumping the list of connections known to IPVS: ip_vs_conn_array() and ip_vs_conn_seq_next(). As suggested by Eric Dumazet. Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: Julian Anastasov <ja@ssi.bg> Signed-off-by: Simon Horman <horms@verge.net.au> --- include/linux/sched.h | 9 +++++++++ 1 file changed, 9 insertions(+)