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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2014-10-31 14:09:23 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2015-01-06 11:02:46 -0800 |
| commit | 96e92021d4fad8543d598b5e4926cb34fd40c4c4 (patch) | |
| tree | cf8ba84276cff7ec0a625f50153b8fd178350735 /kernel/rcu | |
| parent | a8f4cbadfb5c5f7f5d9eef70821276a4e2e9289d (diff) | |
| download | op-kernel-dev-96e92021d4fad8543d598b5e4926cb34fd40c4c4.zip op-kernel-dev-96e92021d4fad8543d598b5e4926cb34fd40c4c4.tar.gz | |
rcu: Make use of rcu_preempt_has_tasks()
Given that there is now arcu_preempt_has_tasks() function that checks
to see if the ->blkd_tasks list is non-empty, this commit makes use of it.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'kernel/rcu')
| -rw-r--r-- | kernel/rcu/tree_plugin.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h index d594da4..bcc6d91 100644 --- a/kernel/rcu/tree_plugin.h +++ b/kernel/rcu/tree_plugin.h @@ -540,7 +540,7 @@ static int rcu_print_task_stall(struct rcu_node *rnp) static void rcu_preempt_check_blocked_tasks(struct rcu_node *rnp) { WARN_ON_ONCE(rcu_preempt_blocked_readers_cgp(rnp)); - if (!list_empty(&rnp->blkd_tasks)) + if (rcu_preempt_has_tasks(rnp)) rnp->gp_tasks = rnp->blkd_tasks.next; WARN_ON_ONCE(rnp->qsmask); } @@ -706,7 +706,7 @@ sync_rcu_preempt_exp_init(struct rcu_state *rsp, struct rcu_node *rnp) raw_spin_lock_irqsave(&rnp->lock, flags); smp_mb__after_unlock_lock(); - if (list_empty(&rnp->blkd_tasks)) { + if (!rcu_preempt_has_tasks(rnp)) { raw_spin_unlock_irqrestore(&rnp->lock, flags); } else { rnp->exp_tasks = rnp->blkd_tasks.next; @@ -985,7 +985,7 @@ void exit_rcu(void) static void rcu_initiate_boost_trace(struct rcu_node *rnp) { - if (list_empty(&rnp->blkd_tasks)) + if (!rcu_preempt_has_tasks(rnp)) rnp->n_balk_blkd_tasks++; else if (rnp->exp_tasks == NULL && rnp->gp_tasks == NULL) rnp->n_balk_exp_gp_tasks++; |
