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rcu/sync: Remove custom check for RCU readers 

The rcu/sync code currently does a special check for being in an RCU
read-side critical section.  With RCU consolidating flavors and the
generic helper added earlier in this series, this check is no longer need.
This commit switches to the generic helper, saving a couple of lines
of code.

Cc: Oleg Nesterov <oleg@redhat.com>
Acked-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.ibm.com>
alistair/sunxi64-5.4-dsi
Joel Fernandes (Google) 2019-07-16 18:12:23 -04:00 committed by Paul E. McKenney
parent 28875945ba
commit fbab8d6735
1 changed files with 1 additions and 3 deletions
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4
include/linux/rcu_sync.h
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@ -31,9 +31,7 @@ struct rcu_sync {
*/
static inline bool rcu_sync_is_idle(struct rcu_sync *rsp)
{
RCU_LOCKDEP_WARN(!rcu_read_lock_held() &&
!rcu_read_lock_bh_held() &&
!rcu_read_lock_sched_held(),
RCU_LOCKDEP_WARN(!rcu_read_lock_any_held(),
"suspicious rcu_sync_is_idle() usage");
return !READ_ONCE(rsp->gp_state); /* GP_IDLE */
}