From: Thomas Gleixner <tglx@linutronix.de>
To: LKML <linux-kernel@vger.kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@kernel.org>, Will Deacon <will@kernel.org>,
Waiman Long <longman@redhat.com>,
Boqun Feng <boqun.feng@gmail.com>,
Steven Rostedt <rostedt@goodmis.org>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Subject: [patch 01/14] locking/rtmutex: Remove rt_mutex_timed_lock()
Date: Tue, 23 Mar 2021 22:30:20 +0100 [thread overview]
Message-ID: <20210323213707.465154098@linutronix.de> (raw)
In-Reply-To: 20210323213019.217008708@linutronix.de
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
rt_mutex_timed_lock() has no callers since commit c051b21f71d1f ("rtmutex:
Confine deadlock logic to futex")
Remove it.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
include/linux/rtmutex.h | 3 ---
kernel/locking/rtmutex.c | 46 ----------------------------------------------
2 files changed, 49 deletions(-)
--- a/include/linux/rtmutex.h
+++ b/include/linux/rtmutex.h
@@ -115,9 +115,6 @@ extern void rt_mutex_lock(struct rt_mute
#endif
extern int rt_mutex_lock_interruptible(struct rt_mutex *lock);
-extern int rt_mutex_timed_lock(struct rt_mutex *lock,
- struct hrtimer_sleeper *timeout);
-
extern int rt_mutex_trylock(struct rt_mutex *lock);
extern void rt_mutex_unlock(struct rt_mutex *lock);
--- a/kernel/locking/rtmutex.c
+++ b/kernel/locking/rtmutex.c
@@ -1395,21 +1395,6 @@ rt_mutex_fastlock(struct rt_mutex *lock,
}
static inline int
-rt_mutex_timed_fastlock(struct rt_mutex *lock, int state,
- struct hrtimer_sleeper *timeout,
- enum rtmutex_chainwalk chwalk,
- int (*slowfn)(struct rt_mutex *lock, int state,
- struct hrtimer_sleeper *timeout,
- enum rtmutex_chainwalk chwalk))
-{
- if (chwalk == RT_MUTEX_MIN_CHAINWALK &&
- likely(rt_mutex_cmpxchg_acquire(lock, NULL, current)))
- return 0;
-
- return slowfn(lock, state, timeout, chwalk);
-}
-
-static inline int
rt_mutex_fasttrylock(struct rt_mutex *lock,
int (*slowfn)(struct rt_mutex *lock))
{
@@ -1517,37 +1502,6 @@ int __sched __rt_mutex_futex_trylock(str
}
/**
- * rt_mutex_timed_lock - lock a rt_mutex interruptible
- * the timeout structure is provided
- * by the caller
- *
- * @lock: the rt_mutex to be locked
- * @timeout: timeout structure or NULL (no timeout)
- *
- * Returns:
- * 0 on success
- * -EINTR when interrupted by a signal
- * -ETIMEDOUT when the timeout expired
- */
-int
-rt_mutex_timed_lock(struct rt_mutex *lock, struct hrtimer_sleeper *timeout)
-{
- int ret;
-
- might_sleep();
-
- mutex_acquire(&lock->dep_map, 0, 0, _RET_IP_);
- ret = rt_mutex_timed_fastlock(lock, TASK_INTERRUPTIBLE, timeout,
- RT_MUTEX_MIN_CHAINWALK,
- rt_mutex_slowlock);
- if (ret)
- mutex_release(&lock->dep_map, _RET_IP_);
-
- return ret;
-}
-EXPORT_SYMBOL_GPL(rt_mutex_timed_lock);
-
-/**
* rt_mutex_trylock - try to lock a rt_mutex
*
* @lock: the rt_mutex to be locked
next prev parent reply other threads:[~2021-03-23 21:40 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-23 21:30 [patch 00/14] locking/rtmutex: Spring cleaning Thomas Gleixner
2021-03-23 21:30 ` Thomas Gleixner [this message]
2021-03-24 7:22 ` [tip: locking/core] locking/rtmutex: Remove rt_mutex_timed_lock() tip-bot2 for Sebastian Andrzej Siewior
2021-03-23 21:30 ` [patch 02/14] locking/rtmutex: Remove rtmutex deadlock tester leftovers Thomas Gleixner
2021-03-24 7:22 ` [tip: locking/core] " tip-bot2 for Sebastian Andrzej Siewior
2021-03-23 21:30 ` [patch 03/14] locking/rtmutex: Remove output from deadlock detector Thomas Gleixner
2021-03-24 7:22 ` [tip: locking/core] " tip-bot2 for Sebastian Andrzej Siewior
2021-03-23 21:30 ` [patch 04/14] locking/rtmutex: Consolidate rt_mutex_init() Thomas Gleixner
2021-03-24 7:22 ` [tip: locking/core] " tip-bot2 for Sebastian Andrzej Siewior
2021-03-23 21:30 ` [patch 05/14] locking/rtmutex: Remove empty and unused debug stubs Thomas Gleixner
2021-03-24 7:22 ` [tip: locking/core] " tip-bot2 for Thomas Gleixner
2021-03-23 21:30 ` [patch 06/14] locking/rtmutex: Move rt_mutex_debug_task_free() to rtmutex.c Thomas Gleixner
2021-03-24 7:22 ` [tip: locking/core] " tip-bot2 for Thomas Gleixner
2021-03-23 21:30 ` [patch 07/14] locking/rtmutex: Inline chainwalk depth check Thomas Gleixner
2021-03-24 7:22 ` [tip: locking/core] " tip-bot2 for Thomas Gleixner
2021-03-23 21:30 ` [patch 08/14] locking/rtmutex: Remove pointless CONFIG_RT_MUTEXES=n stubs Thomas Gleixner
2021-03-24 7:22 ` [tip: locking/core] " tip-bot2 for Thomas Gleixner
2021-03-23 21:30 ` [patch 09/14] locking/rtmutex: Decrapify __rt_mutex_init() Thomas Gleixner
2021-03-24 7:22 ` [tip: locking/core] " tip-bot2 for Thomas Gleixner
2021-03-23 21:30 ` [patch 10/14] locking/rtmutex: Move debug functions as inlines into common header Thomas Gleixner
2021-03-24 7:22 ` [tip: locking/core] " tip-bot2 for Thomas Gleixner
2021-03-23 21:30 ` [patch 11/14] locking/rtmutex: Make text section and inlining consistent Thomas Gleixner
2021-03-24 7:22 ` [tip: locking/core] " tip-bot2 for Thomas Gleixner
2021-03-23 21:30 ` [patch 12/14] locking/rtmutex: Consolidate the fast/slowpath invocation Thomas Gleixner
2021-03-23 22:05 ` Thomas Gleixner
2021-03-23 21:30 ` [patch 13/14] locking/rtmutex: Fix misleading comment in rt_mutex_postunlock() Thomas Gleixner
2021-03-24 7:22 ` [tip: locking/core] " tip-bot2 for Thomas Gleixner
2021-03-23 21:30 ` [patch 14/14] locking/rtmutex: Restrict the trylock WARN_ON() to debug Thomas Gleixner
2021-03-24 7:22 ` [tip: locking/core] " tip-bot2 for Thomas Gleixner
2021-03-23 21:47 ` [patch 00/14] locking/rtmutex: Spring cleaning Thomas Gleixner
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