From: zanussi@kernel.org
To: LKML <linux-kernel@vger.kernel.org>,
linux-rt-users <linux-rt-users@vger.kernel.org>,
Steven Rostedt <rostedt@goodmis.org>,
Thomas Gleixner <tglx@linutronix.de>,
Carsten Emde <C.Emde@osadl.org>, John Kacur <jkacur@redhat.com>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
Daniel Wagner <wagi@monom.org>, Tom Zanussi <zanussi@kernel.org>,
Julia Cartwright <julia@ni.com>
Subject: [PATCH RT 12/19] Revert "futex: Ensure lock/unlock symetry versus pi_lock and hash bucket lock"
Date: Thu, 8 Aug 2019 14:52:40 -0500 [thread overview]
Message-ID: <0b6569b5ad6a4b31289a9f62f40f86a67a151115.1565293934.git.zanussi@kernel.org> (raw)
In-Reply-To: <cover.1565293934.git.zanussi@kernel.org>
In-Reply-To: <cover.1565293934.git.zanussi@kernel.org>
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
v4.14.137-rt65-rc1 stable review patch.
If anyone has any objections, please let me know.
-----------
[ Upstream commit 6a773b70cf105b46298ed3b44e77c102ce31d9ec ]
Drop the RT fixup, the futex code will be changed to avoid the need for
the workaround.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Tom Zanussi <zanussi@kernel.org>
---
kernel/futex.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/kernel/futex.c b/kernel/futex.c
index ad0abb0e339f..07b148ad703a 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -936,9 +936,7 @@ void exit_pi_state_list(struct task_struct *curr)
if (head->next != next) {
/* retain curr->pi_lock for the loop invariant */
raw_spin_unlock(&pi_state->pi_mutex.wait_lock);
- raw_spin_unlock_irq(&curr->pi_lock);
spin_unlock(&hb->lock);
- raw_spin_lock_irq(&curr->pi_lock);
put_pi_state(pi_state);
continue;
}
--
2.14.1
next prev parent reply other threads:[~2019-08-08 19:53 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-08 19:52 [PATCH RT 00/19] Linux v4.14.137-rt65-rc1 zanussi
2019-08-08 19:52 ` [PATCH RT 01/19] kthread: Use __RAW_SPIN_LOCK_UNLOCK to initialize kthread_worker lock zanussi
2019-08-08 19:52 ` [PATCH RT 02/19] kthread: add a global worker thread zanussi
2019-08-08 19:52 ` [PATCH RT 03/19] genirq: Do not invoke the affinity callback via a workqueue on RT zanussi
2019-08-08 19:52 ` [PATCH RT 04/19] genirq: Handle missing work_struct in irq_set_affinity_notifier() zanussi
2019-08-08 19:52 ` [PATCH RT 05/19] locking/rwsem: Rename rwsem_rt.h to rwsem-rt.h zanussi
2019-08-08 19:52 ` [PATCH RT 06/19] sched/completion: Fix a lockup in wait_for_completion() zanussi
2019-08-08 19:52 ` [PATCH RT 07/19] locking/lockdep: Don't complain about incorrect name for no validate class zanussi
2019-08-08 19:52 ` [PATCH RT 08/19] arm: imx6: cpuidle: Use raw_spinlock_t zanussi
2019-08-08 19:52 ` [PATCH RT 09/19] rcu: Don't allow to change rcu_normal_after_boot on RT zanussi
2019-08-08 19:52 ` [PATCH RT 10/19] pci/switchtec: fix stream_open.cocci warnings zanussi
2019-08-08 19:52 ` [PATCH RT 11/19] sched/core: Drop a preempt_disable_rt() statement zanussi
2019-08-08 19:52 ` zanussi [this message]
2019-08-08 19:52 ` [PATCH RT 13/19] Revert "futex: Fix bug on when a requeued RT task times out" zanussi
2019-08-08 19:52 ` [PATCH RT 14/19] Revert "rtmutex: Handle the various new futex race conditions" zanussi
2019-08-08 19:52 ` [PATCH RT 15/19] Revert "futex: workaround migrate_disable/enable in different context" zanussi
2019-08-08 19:52 ` [PATCH RT 16/19] futex: Make the futex_hash_bucket lock raw zanussi
2019-08-08 19:52 ` [PATCH RT 17/19] futex: Delay deallocation of pi_state zanussi
2019-08-08 19:52 ` [PATCH RT 18/19] mm/zswap: Do not disable preemption in zswap_frontswap_store() zanussi
2019-08-08 19:52 ` [PATCH RT 19/19] Linux 4.14.137-rt65-rc1 zanussi
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