From: Michal Hocko <mhocko@kernel.org> To: LKML <linux-kernel@vger.kernel.org> Cc: Peter Zijlstra <peterz@infradead.org>, Ingo Molnar <mingo@redhat.com>, Thomas Gleixner <tglx@linutronix.de>, "H. Peter Anvin" <hpa@zytor.com>, "David S. Miller" <davem@davemloft.net>, Tony Luck <tony.luck@intel.com>, Andrew Morton <akpm@linux-foundation.org>, Chris Zankel <chris@zankel.net>, Max Filippov <jcmvbkbc@gmail.com>, x86@kernel.org, linux-alpha@vger.kernel.org, linux-ia64@vger.kernel.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, linux-xtensa@linux-xtensa.org, linux-arch@vger.kernel.org, Michal Hocko <mhocko@suse.com> Subject: [PATCH 06/11] locking, rwsem: introduce basis for down_write_killable Date: Thu, 07 Apr 2016 15:12:26 +0000 [thread overview] Message-ID: <1460041951-22347-7-git-send-email-mhocko@kernel.org> (raw) In-Reply-To: <1460041951-22347-1-git-send-email-mhocko@kernel.org> From: Michal Hocko <mhocko@suse.com> Introduce a generic implementation necessary for down_write_killable. This is a trivial extension of the already existing down_write call which can be interrupted by SIGKILL. This patch doesn't provide down_write_killable yet because arches have to provide the necessary pieces before. rwsem_down_write_failed which is a generic slow path for the write lock is extended to take a task state and renamed to __rwsem_down_write_failed_common. The return value is either a valid semaphore pointer or ERR_PTR(-EINTR). rwsem_down_write_failed_killable is exported as a new way to wait for the lock and be killable. For rwsem-spinlock implementation the current __down_write it updated in a similar way as __rwsem_down_write_failed_common except it doesn't need new exports just visible __down_write_killable. Architectures which are not using the generic rwsem implementation are supposed to provide their __down_write_killable implementation and use rwsem_down_write_failed_killable for the slow path. [dave@stgolabs.net - rename __rwsem_down_write_failed_state to __rwsem_down_write_failed_common] Signed-off-by: Michal Hocko <mhocko@suse.com> --- include/asm-generic/rwsem.h | 12 ++++++++++++ include/linux/rwsem-spinlock.h | 1 + include/linux/rwsem.h | 2 ++ kernel/locking/rwsem-spinlock.c | 22 ++++++++++++++++++++-- kernel/locking/rwsem-xadd.c | 31 +++++++++++++++++++++++++------ 5 files changed, 60 insertions(+), 8 deletions(-) diff --git a/include/asm-generic/rwsem.h b/include/asm-generic/rwsem.h index b8d8a6cf4ca8..3fc94a046bf5 100644 --- a/include/asm-generic/rwsem.h +++ b/include/asm-generic/rwsem.h @@ -63,6 +63,18 @@ static inline void __down_write(struct rw_semaphore *sem) rwsem_down_write_failed(sem); } +static inline int __down_write_killable(struct rw_semaphore *sem) +{ + long tmp; + + tmp = atomic_long_add_return_acquire(RWSEM_ACTIVE_WRITE_BIAS, + (atomic_long_t *)&sem->count); + if (unlikely(tmp != RWSEM_ACTIVE_WRITE_BIAS)) + if (IS_ERR(rwsem_down_write_failed_killable(sem))) + return -EINTR; + return 0; +} + static inline int __down_write_trylock(struct rw_semaphore *sem) { long tmp; diff --git a/include/linux/rwsem-spinlock.h b/include/linux/rwsem-spinlock.h index a733a5467e6c..ae0528b834cd 100644 --- a/include/linux/rwsem-spinlock.h +++ b/include/linux/rwsem-spinlock.h @@ -34,6 +34,7 @@ struct rw_semaphore { extern void __down_read(struct rw_semaphore *sem); extern int __down_read_trylock(struct rw_semaphore *sem); extern void __down_write(struct rw_semaphore *sem); +extern int __must_check __down_write_killable(struct rw_semaphore *sem); extern int __down_write_trylock(struct rw_semaphore *sem); extern void __up_read(struct rw_semaphore *sem); extern void __up_write(struct rw_semaphore *sem); diff --git a/include/linux/rwsem.h b/include/linux/rwsem.h index 8f498cdde280..7d7ae029dac5 100644 --- a/include/linux/rwsem.h +++ b/include/linux/rwsem.h @@ -14,6 +14,7 @@ #include <linux/list.h> #include <linux/spinlock.h> #include <linux/atomic.h> +#include <linux/err.h> #ifdef CONFIG_RWSEM_SPIN_ON_OWNER #include <linux/osq_lock.h> #endif @@ -43,6 +44,7 @@ struct rw_semaphore { extern struct rw_semaphore *rwsem_down_read_failed(struct rw_semaphore *sem); extern struct rw_semaphore *rwsem_down_write_failed(struct rw_semaphore *sem); +extern struct rw_semaphore *rwsem_down_write_failed_killable(struct rw_semaphore *sem); extern struct rw_semaphore *rwsem_wake(struct rw_semaphore *); extern struct rw_semaphore *rwsem_downgrade_wake(struct rw_semaphore *sem); diff --git a/kernel/locking/rwsem-spinlock.c b/kernel/locking/rwsem-spinlock.c index bab26104a5d0..1591f6b3539f 100644 --- a/kernel/locking/rwsem-spinlock.c +++ b/kernel/locking/rwsem-spinlock.c @@ -191,11 +191,12 @@ int __down_read_trylock(struct rw_semaphore *sem) /* * get a write lock on the semaphore */ -void __sched __down_write(struct rw_semaphore *sem) +int __sched __down_write_common(struct rw_semaphore *sem, int state) { struct rwsem_waiter waiter; struct task_struct *tsk; unsigned long flags; + int ret = 0; raw_spin_lock_irqsave(&sem->wait_lock, flags); @@ -215,16 +216,33 @@ void __sched __down_write(struct rw_semaphore *sem) */ if (sem->count = 0) break; - set_task_state(tsk, TASK_UNINTERRUPTIBLE); + if (signal_pending_state(state, current)) { + ret = -EINTR; + goto out; + } + set_task_state(tsk, state); raw_spin_unlock_irqrestore(&sem->wait_lock, flags); schedule(); raw_spin_lock_irqsave(&sem->wait_lock, flags); } /* got the lock */ sem->count = -1; +out: list_del(&waiter.list); raw_spin_unlock_irqrestore(&sem->wait_lock, flags); + + return ret; +} + +void __sched __down_write(struct rw_semaphore *sem) +{ + __down_write_common(sem, TASK_UNINTERRUPTIBLE); +} + +int __sched __down_write_killable(struct rw_semaphore *sem) +{ + return __down_write_common(sem, TASK_KILLABLE); } /* diff --git a/kernel/locking/rwsem-xadd.c b/kernel/locking/rwsem-xadd.c index a4d4de05b2d1..df4dcb883b50 100644 --- a/kernel/locking/rwsem-xadd.c +++ b/kernel/locking/rwsem-xadd.c @@ -433,12 +433,13 @@ static inline bool rwsem_has_spinner(struct rw_semaphore *sem) /* * Wait until we successfully acquire the write lock */ -__visible -struct rw_semaphore __sched *rwsem_down_write_failed(struct rw_semaphore *sem) +static inline struct rw_semaphore * +__rwsem_down_write_failed_common(struct rw_semaphore *sem, int state) { long count; bool waiting = true; /* any queued threads before us */ struct rwsem_waiter waiter; + struct rw_semaphore *ret = sem; /* undo write bias from down_write operation, stop active locking */ count = rwsem_atomic_update(-RWSEM_ACTIVE_WRITE_BIAS, sem); @@ -478,7 +479,7 @@ struct rw_semaphore __sched *rwsem_down_write_failed(struct rw_semaphore *sem) count = rwsem_atomic_update(RWSEM_WAITING_BIAS, sem); /* wait until we successfully acquire the lock */ - set_current_state(TASK_UNINTERRUPTIBLE); + set_current_state(state); while (true) { if (rwsem_try_write_lock(count, sem)) break; @@ -486,21 +487,39 @@ struct rw_semaphore __sched *rwsem_down_write_failed(struct rw_semaphore *sem) /* Block until there are no active lockers. */ do { + if (signal_pending_state(state, current)) { + raw_spin_lock_irq(&sem->wait_lock); + ret = ERR_PTR(-EINTR); + goto out; + } schedule(); - set_current_state(TASK_UNINTERRUPTIBLE); + set_current_state(state); } while ((count = sem->count) & RWSEM_ACTIVE_MASK); raw_spin_lock_irq(&sem->wait_lock); } +out: __set_current_state(TASK_RUNNING); - list_del(&waiter.list); raw_spin_unlock_irq(&sem->wait_lock); - return sem; + return ret; +} + +__visible struct rw_semaphore * __sched +rwsem_down_write_failed(struct rw_semaphore *sem) +{ + return __rwsem_down_write_failed_common(sem, TASK_UNINTERRUPTIBLE); } EXPORT_SYMBOL(rwsem_down_write_failed); +__visible struct rw_semaphore * __sched +rwsem_down_write_failed_killable(struct rw_semaphore *sem) +{ + return __rwsem_down_write_failed_common(sem, TASK_KILLABLE); +} +EXPORT_SYMBOL(rwsem_down_write_failed_killable); + /* * handle waking up a waiter on the semaphore * - up_read/up_write has decremented the active part of count if we come here -- 2.8.0.rc3
WARNING: multiple messages have this Message-ID (diff)
From: Michal Hocko <mhocko@kernel.org> To: LKML <linux-kernel@vger.kernel.org> Cc: Peter Zijlstra <peterz@infradead.org>, Ingo Molnar <mingo@redhat.com>, Thomas Gleixner <tglx@linutronix.de>, "H. Peter Anvin" <hpa@zytor.com>, "David S. Miller" <davem@davemloft.net>, Tony Luck <tony.luck@intel.com>, Andrew Morton <akpm@linux-foundation.org>, Chris Zankel <chris@zankel.net>, Max Filippov <jcmvbkbc@gmail.com>, x86@kernel.org, linux-alpha@vger.kernel.org, linux-ia64@vger.kernel.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, linux-xtensa@linux-xtensa.org, linux-arch@vger.kernel.org, Michal Hocko <mhocko@suse.com> Subject: [PATCH 06/11] locking, rwsem: introduce basis for down_write_killable Date: Thu, 7 Apr 2016 17:12:26 +0200 [thread overview] Message-ID: <1460041951-22347-7-git-send-email-mhocko@kernel.org> (raw) In-Reply-To: <1460041951-22347-1-git-send-email-mhocko@kernel.org> From: Michal Hocko <mhocko@suse.com> Introduce a generic implementation necessary for down_write_killable. This is a trivial extension of the already existing down_write call which can be interrupted by SIGKILL. This patch doesn't provide down_write_killable yet because arches have to provide the necessary pieces before. rwsem_down_write_failed which is a generic slow path for the write lock is extended to take a task state and renamed to __rwsem_down_write_failed_common. The return value is either a valid semaphore pointer or ERR_PTR(-EINTR). rwsem_down_write_failed_killable is exported as a new way to wait for the lock and be killable. For rwsem-spinlock implementation the current __down_write it updated in a similar way as __rwsem_down_write_failed_common except it doesn't need new exports just visible __down_write_killable. Architectures which are not using the generic rwsem implementation are supposed to provide their __down_write_killable implementation and use rwsem_down_write_failed_killable for the slow path. [dave@stgolabs.net - rename __rwsem_down_write_failed_state to __rwsem_down_write_failed_common] Signed-off-by: Michal Hocko <mhocko@suse.com> --- include/asm-generic/rwsem.h | 12 ++++++++++++ include/linux/rwsem-spinlock.h | 1 + include/linux/rwsem.h | 2 ++ kernel/locking/rwsem-spinlock.c | 22 ++++++++++++++++++++-- kernel/locking/rwsem-xadd.c | 31 +++++++++++++++++++++++++------ 5 files changed, 60 insertions(+), 8 deletions(-) diff --git a/include/asm-generic/rwsem.h b/include/asm-generic/rwsem.h index b8d8a6cf4ca8..3fc94a046bf5 100644 --- a/include/asm-generic/rwsem.h +++ b/include/asm-generic/rwsem.h @@ -63,6 +63,18 @@ static inline void __down_write(struct rw_semaphore *sem) rwsem_down_write_failed(sem); } +static inline int __down_write_killable(struct rw_semaphore *sem) +{ + long tmp; + + tmp = atomic_long_add_return_acquire(RWSEM_ACTIVE_WRITE_BIAS, + (atomic_long_t *)&sem->count); + if (unlikely(tmp != RWSEM_ACTIVE_WRITE_BIAS)) + if (IS_ERR(rwsem_down_write_failed_killable(sem))) + return -EINTR; + return 0; +} + static inline int __down_write_trylock(struct rw_semaphore *sem) { long tmp; diff --git a/include/linux/rwsem-spinlock.h b/include/linux/rwsem-spinlock.h index a733a5467e6c..ae0528b834cd 100644 --- a/include/linux/rwsem-spinlock.h +++ b/include/linux/rwsem-spinlock.h @@ -34,6 +34,7 @@ struct rw_semaphore { extern void __down_read(struct rw_semaphore *sem); extern int __down_read_trylock(struct rw_semaphore *sem); extern void __down_write(struct rw_semaphore *sem); +extern int __must_check __down_write_killable(struct rw_semaphore *sem); extern int __down_write_trylock(struct rw_semaphore *sem); extern void __up_read(struct rw_semaphore *sem); extern void __up_write(struct rw_semaphore *sem); diff --git a/include/linux/rwsem.h b/include/linux/rwsem.h index 8f498cdde280..7d7ae029dac5 100644 --- a/include/linux/rwsem.h +++ b/include/linux/rwsem.h @@ -14,6 +14,7 @@ #include <linux/list.h> #include <linux/spinlock.h> #include <linux/atomic.h> +#include <linux/err.h> #ifdef CONFIG_RWSEM_SPIN_ON_OWNER #include <linux/osq_lock.h> #endif @@ -43,6 +44,7 @@ struct rw_semaphore { extern struct rw_semaphore *rwsem_down_read_failed(struct rw_semaphore *sem); extern struct rw_semaphore *rwsem_down_write_failed(struct rw_semaphore *sem); +extern struct rw_semaphore *rwsem_down_write_failed_killable(struct rw_semaphore *sem); extern struct rw_semaphore *rwsem_wake(struct rw_semaphore *); extern struct rw_semaphore *rwsem_downgrade_wake(struct rw_semaphore *sem); diff --git a/kernel/locking/rwsem-spinlock.c b/kernel/locking/rwsem-spinlock.c index bab26104a5d0..1591f6b3539f 100644 --- a/kernel/locking/rwsem-spinlock.c +++ b/kernel/locking/rwsem-spinlock.c @@ -191,11 +191,12 @@ int __down_read_trylock(struct rw_semaphore *sem) /* * get a write lock on the semaphore */ -void __sched __down_write(struct rw_semaphore *sem) +int __sched __down_write_common(struct rw_semaphore *sem, int state) { struct rwsem_waiter waiter; struct task_struct *tsk; unsigned long flags; + int ret = 0; raw_spin_lock_irqsave(&sem->wait_lock, flags); @@ -215,16 +216,33 @@ void __sched __down_write(struct rw_semaphore *sem) */ if (sem->count == 0) break; - set_task_state(tsk, TASK_UNINTERRUPTIBLE); + if (signal_pending_state(state, current)) { + ret = -EINTR; + goto out; + } + set_task_state(tsk, state); raw_spin_unlock_irqrestore(&sem->wait_lock, flags); schedule(); raw_spin_lock_irqsave(&sem->wait_lock, flags); } /* got the lock */ sem->count = -1; +out: list_del(&waiter.list); raw_spin_unlock_irqrestore(&sem->wait_lock, flags); + + return ret; +} + +void __sched __down_write(struct rw_semaphore *sem) +{ + __down_write_common(sem, TASK_UNINTERRUPTIBLE); +} + +int __sched __down_write_killable(struct rw_semaphore *sem) +{ + return __down_write_common(sem, TASK_KILLABLE); } /* diff --git a/kernel/locking/rwsem-xadd.c b/kernel/locking/rwsem-xadd.c index a4d4de05b2d1..df4dcb883b50 100644 --- a/kernel/locking/rwsem-xadd.c +++ b/kernel/locking/rwsem-xadd.c @@ -433,12 +433,13 @@ static inline bool rwsem_has_spinner(struct rw_semaphore *sem) /* * Wait until we successfully acquire the write lock */ -__visible -struct rw_semaphore __sched *rwsem_down_write_failed(struct rw_semaphore *sem) +static inline struct rw_semaphore * +__rwsem_down_write_failed_common(struct rw_semaphore *sem, int state) { long count; bool waiting = true; /* any queued threads before us */ struct rwsem_waiter waiter; + struct rw_semaphore *ret = sem; /* undo write bias from down_write operation, stop active locking */ count = rwsem_atomic_update(-RWSEM_ACTIVE_WRITE_BIAS, sem); @@ -478,7 +479,7 @@ struct rw_semaphore __sched *rwsem_down_write_failed(struct rw_semaphore *sem) count = rwsem_atomic_update(RWSEM_WAITING_BIAS, sem); /* wait until we successfully acquire the lock */ - set_current_state(TASK_UNINTERRUPTIBLE); + set_current_state(state); while (true) { if (rwsem_try_write_lock(count, sem)) break; @@ -486,21 +487,39 @@ struct rw_semaphore __sched *rwsem_down_write_failed(struct rw_semaphore *sem) /* Block until there are no active lockers. */ do { + if (signal_pending_state(state, current)) { + raw_spin_lock_irq(&sem->wait_lock); + ret = ERR_PTR(-EINTR); + goto out; + } schedule(); - set_current_state(TASK_UNINTERRUPTIBLE); + set_current_state(state); } while ((count = sem->count) & RWSEM_ACTIVE_MASK); raw_spin_lock_irq(&sem->wait_lock); } +out: __set_current_state(TASK_RUNNING); - list_del(&waiter.list); raw_spin_unlock_irq(&sem->wait_lock); - return sem; + return ret; +} + +__visible struct rw_semaphore * __sched +rwsem_down_write_failed(struct rw_semaphore *sem) +{ + return __rwsem_down_write_failed_common(sem, TASK_UNINTERRUPTIBLE); } EXPORT_SYMBOL(rwsem_down_write_failed); +__visible struct rw_semaphore * __sched +rwsem_down_write_failed_killable(struct rw_semaphore *sem) +{ + return __rwsem_down_write_failed_common(sem, TASK_KILLABLE); +} +EXPORT_SYMBOL(rwsem_down_write_failed_killable); + /* * handle waking up a waiter on the semaphore * - up_read/up_write has decremented the active part of count if we come here -- 2.8.0.rc3
next prev parent reply other threads:[~2016-04-07 15:12 UTC|newest] Thread overview: 226+ messages / expand[flat|nested] mbox.gz Atom feed top 2016-02-29 12:58 [PATCH 0/11] introduce down_write_killable for rw_semaphore Michal Hocko 2016-02-29 12:58 ` Michal Hocko 2016-02-29 12:58 ` [PATCH 01/11] locking, rwsem: get rid of __down_write_nested Michal Hocko 2016-02-29 12:58 ` Michal Hocko 2016-02-29 12:58 ` [PATCH 02/11] locking, rwsem: drop explicit memory barriers Michal Hocko 2016-02-29 12:58 ` Michal Hocko 2016-02-29 12:58 ` [PATCH 03/11] locking, rwsem: introduce basis for down_write_killable Michal Hocko 2016-02-29 12:58 ` Michal Hocko 2016-03-30 13:25 ` Peter Zijlstra 2016-03-30 13:25 ` Peter Zijlstra 2016-03-31 8:33 ` Michal Hocko 2016-03-31 8:33 ` Michal Hocko 2016-03-31 8:44 ` Peter Zijlstra 2016-03-31 8:44 ` Peter Zijlstra 2016-03-31 8:55 ` [PATCH] " Michal Hocko 2016-03-31 8:55 ` Michal Hocko 2016-02-29 12:58 ` [PATCH 04/11] alpha, rwsem: provide __down_write_killable Michal Hocko 2016-02-29 12:58 ` Michal Hocko 2016-02-29 12:58 ` [PATCH 05/11] ia64, " Michal Hocko 2016-02-29 12:58 ` Michal Hocko 2016-02-29 12:58 ` [PATCH 06/11] s390, " Michal Hocko 2016-02-29 12:58 ` Michal Hocko 2016-02-29 12:58 ` [PATCH 07/11] sh, " Michal Hocko 2016-02-29 12:58 ` Michal Hocko 2016-02-29 12:58 ` [PATCH 08/11] sparc, " Michal Hocko 2016-02-29 12:58 ` Michal Hocko 2016-02-29 12:58 ` [PATCH 09/11] xtensa, " Michal Hocko 2016-02-29 12:58 ` Michal Hocko 2016-02-29 12:58 ` [PATCH 10/11] x86, " Michal Hocko 2016-02-29 12:58 ` Michal Hocko 2016-02-29 12:58 ` [PATCH 11/11] locking, rwsem: provide down_write_killable Michal Hocko 2016-02-29 12:58 ` Michal Hocko 2016-03-30 13:32 ` [PATCH 0/11] introduce down_write_killable for rw_semaphore Peter Zijlstra 2016-03-30 13:32 ` Peter Zijlstra 2016-03-31 8:59 ` Michal Hocko 2016-03-31 8:59 ` Michal Hocko 2016-03-31 9:20 ` Ingo Molnar 2016-03-31 9:20 ` Ingo Molnar 2016-03-31 10:58 ` Michal Hocko 2016-03-31 10:58 ` Michal Hocko 2016-03-31 17:03 ` Andrew Morton 2016-03-31 17:03 ` Andrew Morton 2016-04-01 6:33 ` Ingo Molnar 2016-04-01 6:33 ` Ingo Molnar 2016-04-01 9:21 ` Michal Hocko 2016-04-01 9:21 ` Michal Hocko 2016-04-01 9:50 ` Ingo Molnar 2016-04-01 9:50 ` Ingo Molnar 2016-04-01 10:52 ` Michal Hocko 2016-04-01 10:52 ` Michal Hocko 2016-04-01 7:26 ` Michal Hocko 2016-04-01 7:26 ` Michal Hocko 2016-04-01 9:11 ` Andrew Morton 2016-04-01 9:11 ` Andrew Morton 2016-04-01 11:04 ` [PATCH 0/11] introduce down_write_killable for rw_semaphore v2 Michal Hocko 2016-04-01 11:04 ` Michal Hocko 2016-04-01 11:04 ` [PATCH 01/11] locking, rwsem: get rid of __down_write_nested Michal Hocko 2016-04-01 11:04 ` Michal Hocko 2016-04-02 0:28 ` Davidlohr Bueso 2016-04-02 0:28 ` Davidlohr Bueso 2016-04-01 11:04 ` [PATCH 02/11] locking, rwsem: drop explicit memory barriers Michal Hocko 2016-04-01 11:04 ` Michal Hocko 2016-04-02 1:17 ` Davidlohr Bueso 2016-04-02 1:17 ` Davidlohr Bueso 2016-04-04 9:03 ` Michal Hocko 2016-04-04 9:03 ` Michal Hocko 2016-04-04 9:06 ` [PATCH 1/2] xtensa, rwsem: drop superfluous arch specific implementation Michal Hocko 2016-04-04 9:06 ` Michal Hocko 2016-04-04 9:06 ` [PATCH 2/2] sh, " Michal Hocko 2016-04-04 9:06 ` Michal Hocko 2016-04-06 9:26 ` Peter Zijlstra 2016-04-06 9:26 ` Peter Zijlstra 2016-04-06 9:50 ` Geert Uytterhoeven 2016-04-06 9:50 ` Geert Uytterhoeven 2016-04-06 10:27 ` Peter Zijlstra 2016-04-06 10:27 ` Peter Zijlstra 2016-04-04 10:23 ` [PATCH 1/2] xtensa, " Max Filippov 2016-04-04 10:23 ` Max Filippov 2016-04-06 9:06 ` [PATCH] sparc, " Michal Hocko 2016-04-06 9:06 ` Michal Hocko 2016-04-06 9:06 ` Michal Hocko 2016-04-06 9:06 ` Michal Hocko 2016-04-01 11:04 ` [PATCH 03/11] locking, rwsem: introduce basis for down_write_killable Michal Hocko 2016-04-01 11:04 ` Michal Hocko 2016-04-02 4:41 ` Davidlohr Bueso 2016-04-02 4:41 ` Davidlohr Bueso 2016-04-04 9:17 ` Michal Hocko 2016-04-04 9:17 ` Michal Hocko 2016-04-04 9:21 ` Peter Zijlstra 2016-04-04 9:21 ` Peter Zijlstra 2016-04-07 6:58 ` Davidlohr Bueso 2016-04-07 6:58 ` Davidlohr Bueso 2016-04-07 7:38 ` Michal Hocko 2016-04-07 7:38 ` Michal Hocko 2016-05-10 10:43 ` Tetsuo Handa 2016-05-10 11:53 ` Michal Hocko 2016-05-10 12:38 ` Peter Zijlstra 2016-05-10 13:57 ` Tetsuo Handa 2016-05-11 7:23 ` Michal Hocko 2016-05-11 8:28 ` Michal Hocko 2016-05-11 8:44 ` Peter Zijlstra 2016-05-11 9:04 ` Michal Hocko 2016-05-11 9:17 ` Peter Zijlstra 2016-05-11 9:31 ` Michal Hocko 2016-05-11 9:41 ` Peter Zijlstra 2016-05-11 13:59 ` Michal Hocko 2016-05-11 18:03 ` Michal Hocko 2016-05-12 11:57 ` [PATCH] locking, rwsem: Fix down_write_killable() Peter Zijlstra 2016-05-12 12:15 ` [tip:locking/rwsem] locking/rwsem: " tip-bot for Peter Zijlstra 2016-05-12 16:59 ` [PATCH] locking, rwsem: " Michal Hocko 2016-05-15 20:57 ` [tip:locking/rwsem] locking/rwsem: " tip-bot for Peter Zijlstra 2016-05-12 12:12 ` [PATCH 03/11] locking, rwsem: introduce basis for down_write_killable Peter Zijlstra 2016-05-12 12:19 ` Michal Hocko 2016-05-12 13:58 ` Peter Zijlstra 2016-05-12 19:42 ` Waiman Long 2016-05-11 8:35 ` Peter Zijlstra 2016-05-11 9:02 ` Michal Hocko 2016-04-01 11:04 ` [PATCH 04/11] alpha, rwsem: provide __down_write_killable Michal Hocko 2016-04-01 11:04 ` Michal Hocko 2016-04-01 11:04 ` [PATCH 05/11] ia64, " Michal Hocko 2016-04-01 11:04 ` Michal Hocko 2016-04-01 11:04 ` [PATCH 06/11] s390, " Michal Hocko 2016-04-01 11:04 ` Michal Hocko 2016-04-01 11:04 ` [PATCH 07/11] sh, " Michal Hocko 2016-04-01 11:04 ` Michal Hocko 2016-04-01 11:04 ` [PATCH 08/11] sparc, " Michal Hocko 2016-04-01 11:04 ` Michal Hocko 2016-04-01 11:04 ` [PATCH 09/11] xtensa, " Michal Hocko 2016-04-01 11:04 ` Michal Hocko 2016-04-01 11:04 ` [PATCH 10/11] x86, " Michal Hocko 2016-04-01 11:04 ` Michal Hocko 2016-04-06 18:31 ` Peter Zijlstra 2016-04-06 18:31 ` Peter Zijlstra 2016-04-01 11:04 ` [PATCH 11/11] locking, rwsem: provide down_write_killable Michal Hocko 2016-04-01 11:04 ` Michal Hocko 2016-04-07 15:12 ` [PATCH 0/11] introduce down_write_killable for rw_semaphore v3 Michal Hocko 2016-04-07 15:12 ` Michal Hocko 2016-04-07 15:12 ` [PATCH 01/11] locking, rwsem: get rid of __down_write_nested Michal Hocko 2016-04-07 15:12 ` Michal Hocko 2016-04-13 11:32 ` [tip:locking/rwsem] locking/rwsem: Get rid of __down_write_nested() tip-bot for Michal Hocko 2016-04-07 15:12 ` [PATCH 02/11] locking, rwsem: drop explicit memory barriers Michal Hocko 2016-04-07 15:12 ` Michal Hocko 2016-04-13 11:32 ` [tip:locking/rwsem] locking/rwsem: Drop " tip-bot for Michal Hocko 2016-04-07 15:12 ` [PATCH 03/11] xtensa, rwsem: drop superfluous arch specific implementation Michal Hocko 2016-04-07 15:12 ` Michal Hocko 2016-04-13 11:33 ` [tip:locking/rwsem] locking/rwsem, xtensa: Drop " tip-bot for Michal Hocko 2016-04-07 15:12 ` [PATCH 04/11] sh, rwsem: drop " Michal Hocko 2016-04-07 15:12 ` Michal Hocko 2016-04-13 11:33 ` [tip:locking/rwsem] locking/rwsem, sh: Drop " tip-bot for Michal Hocko 2016-04-07 15:12 ` [PATCH 05/11] sparc, rwsem: drop " Michal Hocko 2016-04-07 15:12 ` Michal Hocko 2016-04-13 11:33 ` [tip:locking/rwsem] locking/rwsem, sparc: Drop " tip-bot for Michal Hocko 2016-04-07 15:12 ` Michal Hocko [this message] 2016-04-07 15:12 ` [PATCH 06/11] locking, rwsem: introduce basis for down_write_killable Michal Hocko 2016-04-13 11:34 ` [tip:locking/rwsem] locking/rwsem: Introduce basis for down_write_killable() tip-bot for Michal Hocko 2016-04-07 15:12 ` [PATCH 07/11] alpha, rwsem: provide __down_write_killable Michal Hocko 2016-04-07 15:12 ` Michal Hocko 2016-04-22 9:42 ` [tip:locking/rwsem] locking/rwsem, alpha: Provide __down_write_killable() tip-bot for Michal Hocko 2016-04-07 15:12 ` [PATCH 08/11] ia64, rwsem: provide __down_write_killable Michal Hocko 2016-04-07 15:12 ` Michal Hocko 2016-04-07 17:28 ` Sergei Shtylyov 2016-04-07 17:28 ` Sergei Shtylyov 2016-04-08 6:22 ` Michal Hocko 2016-04-08 6:22 ` Michal Hocko 2016-04-22 9:43 ` [tip:locking/rwsem] locking/rwsem, ia64: Provide __down_write_killable() tip-bot for Michal Hocko 2016-04-07 15:12 ` [PATCH 09/11] s390, rwsem: provide __down_write_killable Michal Hocko 2016-04-07 15:12 ` Michal Hocko 2016-04-22 9:43 ` [tip:locking/rwsem] locking/rwsem, s390: Provide __down_write_killable() tip-bot for Michal Hocko 2016-04-07 15:12 ` [PATCH 10/11] x86, rwsem: provide __down_write_killable Michal Hocko 2016-04-07 15:12 ` Michal Hocko 2016-04-13 9:08 ` Ingo Molnar 2016-04-13 9:08 ` Ingo Molnar 2016-04-13 9:16 ` Michal Hocko 2016-04-13 9:16 ` Michal Hocko 2016-04-13 9:19 ` Ingo Molnar 2016-04-13 9:19 ` Ingo Molnar 2016-04-13 10:27 ` Ingo Molnar 2016-04-13 10:27 ` Ingo Molnar 2016-04-13 12:49 ` Michal Hocko 2016-04-13 12:49 ` Michal Hocko 2016-04-13 12:49 ` Michal Hocko 2016-04-13 12:49 ` Michal Hocko 2016-04-17 16:59 ` Michal Hocko 2016-04-17 16:59 ` Michal Hocko 2016-04-17 16:59 ` Michal Hocko 2016-04-20 13:40 ` Peter Zijlstra 2016-04-20 13:40 ` Peter Zijlstra 2016-04-20 13:40 ` Peter Zijlstra 2016-04-20 18:04 ` H. Peter Anvin 2016-04-20 18:04 ` H. Peter Anvin 2016-04-20 20:45 ` Borislav Petkov 2016-04-20 20:45 ` Borislav Petkov 2016-04-20 20:58 ` Michal Hocko 2016-04-20 20:58 ` Michal Hocko 2016-04-20 21:06 ` H. Peter Anvin 2016-04-20 21:06 ` H. Peter Anvin 2016-04-20 21:36 ` Borislav Petkov 2016-04-20 21:36 ` Borislav Petkov 2016-04-20 22:29 ` H. Peter Anvin 2016-04-20 22:29 ` H. Peter Anvin 2016-04-21 11:35 ` Borislav Petkov 2016-04-21 11:35 ` Borislav Petkov 2016-04-21 13:09 ` Michal Hocko 2016-04-21 13:09 ` Michal Hocko 2016-04-21 13:21 ` Borislav Petkov 2016-04-21 13:21 ` Borislav Petkov 2016-04-27 12:02 ` [PATCH] x86/locking/rwsem: Cleanup ____down_write() Borislav Petkov 2016-04-27 12:02 ` Borislav Petkov 2016-04-28 10:27 ` [tip:locking/rwsem] locking/rwsem, x86: Clean up ____down_write() tip-bot for Borislav Petkov 2016-04-22 6:53 ` [PATCH 10/11] x86, rwsem: provide __down_write_killable Ingo Molnar 2016-04-22 6:53 ` Ingo Molnar 2016-04-22 6:53 ` Ingo Molnar 2016-04-13 9:57 ` [PATCH] x86: add frame annotation for call_rwsem_down_write_failed_killable Michal Hocko 2016-04-13 9:57 ` Michal Hocko 2016-04-13 9:57 ` Michal Hocko 2016-04-22 9:44 ` [tip:locking/rwsem] locking/rwsem, x86: Add frame annotation for call_rwsem_down_write_failed_killable() tip-bot for Michal Hocko 2016-04-22 9:43 ` [tip:locking/rwsem] locking/rwsem, x86: Provide __down_write_killable() tip-bot for Michal Hocko 2016-04-07 15:12 ` [PATCH 11/11] locking, rwsem: provide down_write_killable Michal Hocko 2016-04-07 15:12 ` Michal Hocko 2016-04-22 9:44 ` [tip:locking/rwsem] locking/rwsem: Provide down_write_killable() tip-bot for Michal Hocko 2016-04-12 9:37 ` [PATCH 0/11] introduce down_write_killable for rw_semaphore v3 Michal Hocko 2016-04-12 9:37 ` Michal Hocko 2016-04-12 15:40 ` Peter Zijlstra 2016-04-12 15:40 ` Peter Zijlstra 2016-04-12 18:01 ` Michal Hocko 2016-04-12 18:01 ` Michal Hocko
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