From: "Paul E. McKenney" <paulmck@linux.ibm.com>
To: rcu@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, mingo@kernel.org,
jiangshanlai@gmail.com, dipankar@in.ibm.com,
akpm@linux-foundation.org, mathieu.desnoyers@efficios.com,
josh@joshtriplett.org, tglx@linutronix.de, peterz@infradead.org,
rostedt@goodmis.org, dhowells@redhat.com, edumazet@google.com,
fweisbec@gmail.com, oleg@redhat.com, joel@joelfernandes.org,
Jiang Biao <benbjiang@tencent.com>,
"Paul E . McKenney" <paulmck@linux.ibm.com>
Subject: [PATCH tip/core/rcu 12/12] rcu: Remove unused rdp local from synchronize_rcu_expedited()
Date: Thu, 30 May 2019 07:52:29 -0700 [thread overview]
Message-ID: <20190530145229.29565-12-paulmck@linux.ibm.com> (raw)
In-Reply-To: <20190530145204.GA28526@linux.ibm.com>
From: Jiang Biao <benbjiang@tencent.com>
Because rdp is initialized but never used in synchronize_rcu_expedited(),
this commit removes it.
Signed-off-by: Jiang Biao <benbjiang@tencent.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.ibm.com>
---
kernel/rcu/tree_exp.h | 2 --
1 file changed, 2 deletions(-)
diff --git a/kernel/rcu/tree_exp.h b/kernel/rcu/tree_exp.h
index e0c928d04be5..8e539710721a 100644
--- a/kernel/rcu/tree_exp.h
+++ b/kernel/rcu/tree_exp.h
@@ -793,7 +793,6 @@ static int rcu_print_task_exp_stall(struct rcu_node *rnp)
*/
void synchronize_rcu_expedited(void)
{
- struct rcu_data *rdp;
struct rcu_exp_work rew;
struct rcu_node *rnp;
unsigned long s;
@@ -830,7 +829,6 @@ void synchronize_rcu_expedited(void)
}
/* Wait for expedited grace period to complete. */
- rdp = per_cpu_ptr(&rcu_data, raw_smp_processor_id());
rnp = rcu_get_root();
wait_event(rnp->exp_wq[rcu_seq_ctr(s) & 0x3],
sync_exp_work_done(s));
--
2.17.1
prev parent reply other threads:[~2019-05-30 14:53 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-30 14:52 [PATCH tip/core/rcu 0/12] Paul E. McKenney
2019-05-30 14:52 ` [PATCH tip/core/rcu 01/12] rcu: Enable elimination of Tree-RCU softirq processing Paul E. McKenney
2019-05-30 14:52 ` [PATCH tip/core/rcu 02/12] rcu: Check for wakeup-safe conditions in rcu_read_unlock_special() Paul E. McKenney
2019-05-30 14:52 ` [PATCH tip/core/rcu 03/12] rcu: Only do rcu_read_unlock_special() wakeups if expedited Paul E. McKenney
2019-05-30 14:52 ` [PATCH tip/core/rcu 04/12] rcu: Allow rcu_read_unlock_special() to raise_softirq() if in_irq() Paul E. McKenney
2019-05-30 14:52 ` [PATCH tip/core/rcu 05/12] rcu: Use irq_work to get scheduler's attention in clean context Paul E. McKenney
2019-05-30 14:52 ` [PATCH tip/core/rcu 06/12] rcu: Inline invoke_rcu_callbacks() into its sole remaining caller Paul E. McKenney
2019-05-30 14:52 ` [PATCH tip/core/rcu 07/12] rcu: Avoid self-IPI in sync_rcu_exp_select_node_cpus() Paul E. McKenney
2019-05-30 14:52 ` [PATCH tip/core/rcu 08/12] rcu: Avoid self-IPI in sync_sched_exp_online_cleanup() Paul E. McKenney
2019-05-30 14:52 ` [PATCH tip/core/rcu 09/12] lockdep: Add assertion to check if in an interrupt Paul E. McKenney
2019-05-30 14:52 ` [PATCH tip/core/rcu 10/12] rcu: Add checks for dynticks counters in rcu_is_cpu_rrupt_from_idle() Paul E. McKenney
2019-05-30 14:52 ` [PATCH tip/core/rcu 11/12] rcu: Rename rcu_data's ->deferred_qs to ->exp_deferred_qs Paul E. McKenney
2019-05-30 14:52 ` Paul E. McKenney [this message]
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