From: Nick Piggin <npiggin@suse.de>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Matthew Wilcox <matthew@wil.cx>, Andi Kleen <andi@firstfloor.org>,
Chris Mason <chris.mason@oracle.com>,
Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org,
linux-fsdevel <linux-fsdevel@vger.kernel.org>,
linux-btrfs <linux-btrfs@vger.kernel.org>,
Ingo Molnar <mingo@elte.hu>, Thomas Gleixner <tglx@linutronix.de>,
Steven Rostedt <rostedt@goodmis.org>,
Gregory Haskins <ghaskins@novell.com>,
Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: [PATCH][RFC]: mutex: adaptive spin
Date: Tue, 6 Jan 2009 14:29:40 +0100 [thread overview]
Message-ID: <20090106132940.GE16738@wotan.suse.de> (raw)
In-Reply-To: <1231242031.11687.97.camel@twins>
On Tue, Jan 06, 2009 at 12:40:31PM +0100, Peter Zijlstra wrote:
> Subject: mutex: adaptive spin
> From: Peter Zijlstra <a.p.zijlstra@chello.nl>
> Date: Tue Jan 06 12:32:12 CET 2009
>
> Based on the code in -rt, provide adaptive spins on generic mutexes.
I guess it would be nice to add another type so you can test/convert
callsites individually. I've got no objections to improving
synchronisation primitives, but I would be interested to see good
results from some mutex that can't be achieved by improving the
locking (by improving I don't mean inventing some crazy lockless
algorithm, but simply making it reasonably sane and scalable).
Good area to investigate though, I think.
>
> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
> ---
> include/linux/mutex.h | 4 ++--
> include/linux/sched.h | 1 +
> kernel/mutex-debug.c | 11 ++---------
> kernel/mutex-debug.h | 8 --------
> kernel/mutex.c | 46 +++++++++++++++++++++++++++++++++++++++-------
> kernel/mutex.h | 2 --
> kernel/sched.c | 5 +++++
> 7 files changed, 49 insertions(+), 28 deletions(-)
>
> Index: linux-2.6/include/linux/mutex.h
> ===================================================================
> --- linux-2.6.orig/include/linux/mutex.h
> +++ linux-2.6/include/linux/mutex.h
> @@ -50,8 +50,8 @@ struct mutex {
> atomic_t count;
> spinlock_t wait_lock;
> struct list_head wait_list;
> + struct task_struct *owner;
> #ifdef CONFIG_DEBUG_MUTEXES
> - struct thread_info *owner;
> const char *name;
> void *magic;
> #endif
> @@ -67,8 +67,8 @@ struct mutex {
> struct mutex_waiter {
> struct list_head list;
> struct task_struct *task;
> -#ifdef CONFIG_DEBUG_MUTEXES
> struct mutex *lock;
> +#ifdef CONFIG_DEBUG_MUTEXES
> void *magic;
> #endif
> };
> Index: linux-2.6/include/linux/sched.h
> ===================================================================
> --- linux-2.6.orig/include/linux/sched.h
> +++ linux-2.6/include/linux/sched.h
> @@ -249,6 +249,7 @@ extern void init_idle(struct task_struct
> extern void init_idle_bootup_task(struct task_struct *idle);
>
> extern int runqueue_is_locked(void);
> +extern int task_is_current(struct task_struct *p);
> extern void task_rq_unlock_wait(struct task_struct *p);
>
> extern cpumask_var_t nohz_cpu_mask;
> Index: linux-2.6/kernel/mutex-debug.c
> ===================================================================
> --- linux-2.6.orig/kernel/mutex-debug.c
> +++ linux-2.6/kernel/mutex-debug.c
> @@ -26,11 +26,6 @@
> /*
> * Must be called with lock->wait_lock held.
> */
> -void debug_mutex_set_owner(struct mutex *lock, struct thread_info *new_owner)
> -{
> - lock->owner = new_owner;
> -}
> -
> void debug_mutex_lock_common(struct mutex *lock, struct mutex_waiter *waiter)
> {
> memset(waiter, MUTEX_DEBUG_INIT, sizeof(*waiter));
> @@ -59,7 +54,6 @@ void debug_mutex_add_waiter(struct mutex
>
> /* Mark the current thread as blocked on the lock: */
> ti->task->blocked_on = waiter;
> - waiter->lock = lock;
> }
>
> void mutex_remove_waiter(struct mutex *lock, struct mutex_waiter *waiter,
> @@ -80,9 +74,9 @@ void debug_mutex_unlock(struct mutex *lo
> return;
>
> DEBUG_LOCKS_WARN_ON(lock->magic != lock);
> - DEBUG_LOCKS_WARN_ON(lock->owner != current_thread_info());
> + DEBUG_LOCKS_WARN_ON(lock->owner != current);
> DEBUG_LOCKS_WARN_ON(!lock->wait_list.prev && !lock->wait_list.next);
> - DEBUG_LOCKS_WARN_ON(lock->owner != current_thread_info());
> + DEBUG_LOCKS_WARN_ON(lock->owner != current);
> }
>
> void debug_mutex_init(struct mutex *lock, const char *name,
> @@ -95,7 +89,6 @@ void debug_mutex_init(struct mutex *lock
> debug_check_no_locks_freed((void *)lock, sizeof(*lock));
> lockdep_init_map(&lock->dep_map, name, key, 0);
> #endif
> - lock->owner = NULL;
> lock->magic = lock;
> }
>
> Index: linux-2.6/kernel/mutex-debug.h
> ===================================================================
> --- linux-2.6.orig/kernel/mutex-debug.h
> +++ linux-2.6/kernel/mutex-debug.h
> @@ -13,14 +13,6 @@
> /*
> * This must be called with lock->wait_lock held.
> */
> -extern void
> -debug_mutex_set_owner(struct mutex *lock, struct thread_info *new_owner);
> -
> -static inline void debug_mutex_clear_owner(struct mutex *lock)
> -{
> - lock->owner = NULL;
> -}
> -
> extern void debug_mutex_lock_common(struct mutex *lock,
> struct mutex_waiter *waiter);
> extern void debug_mutex_wake_waiter(struct mutex *lock,
> Index: linux-2.6/kernel/mutex.c
> ===================================================================
> --- linux-2.6.orig/kernel/mutex.c
> +++ linux-2.6/kernel/mutex.c
> @@ -46,6 +46,7 @@ __mutex_init(struct mutex *lock, const c
> atomic_set(&lock->count, 1);
> spin_lock_init(&lock->wait_lock);
> INIT_LIST_HEAD(&lock->wait_list);
> + lock->owner = NULL;
>
> debug_mutex_init(lock, name, key);
> }
> @@ -120,6 +121,28 @@ void __sched mutex_unlock(struct mutex *
>
> EXPORT_SYMBOL(mutex_unlock);
>
> +#ifdef CONFIG_SMP
> +static int adaptive_wait(struct mutex_waiter *waiter,
> + struct task_struct *owner, long state)
> +{
> + for (;;) {
> + if (signal_pending_state(state, waiter->task))
> + return 0;
> + if (waiter->lock->owner != owner)
> + return 0;
> + if (!task_is_current(owner))
> + return 1;
> + cpu_relax();
> + }
> +}
> +#else
> +static int adaptive_wait(struct mutex_waiter *waiter,
> + struct task_struct *owner, long state)
> +{
> + return 1;
> +}
> +#endif
> +
> /*
> * Lock a mutex (possibly interruptible), slowpath:
> */
> @@ -127,7 +150,7 @@ static inline int __sched
> __mutex_lock_common(struct mutex *lock, long state, unsigned int subclass,
> unsigned long ip)
> {
> - struct task_struct *task = current;
> + struct task_struct *owner, *task = current;
> struct mutex_waiter waiter;
> unsigned int old_val;
> unsigned long flags;
> @@ -141,6 +164,7 @@ __mutex_lock_common(struct mutex *lock,
> /* add waiting tasks to the end of the waitqueue (FIFO): */
> list_add_tail(&waiter.list, &lock->wait_list);
> waiter.task = task;
> + waiter.lock = lock;
>
> old_val = atomic_xchg(&lock->count, -1);
> if (old_val == 1)
> @@ -175,11 +199,19 @@ __mutex_lock_common(struct mutex *lock,
> debug_mutex_free_waiter(&waiter);
> return -EINTR;
> }
> - __set_task_state(task, state);
>
> - /* didnt get the lock, go to sleep: */
> + owner = lock->owner;
> + get_task_struct(owner);
> spin_unlock_mutex(&lock->wait_lock, flags);
> - schedule();
> +
> + if (adaptive_wait(&waiter, owner, state)) {
> + put_task_struct(owner);
> + __set_task_state(task, state);
> + /* didnt get the lock, go to sleep: */
> + schedule();
> + } else
> + put_task_struct(owner);
> +
> spin_lock_mutex(&lock->wait_lock, flags);
> }
>
> @@ -187,7 +219,7 @@ done:
> lock_acquired(&lock->dep_map, ip);
> /* got the lock - rejoice! */
> mutex_remove_waiter(lock, &waiter, task_thread_info(task));
> - debug_mutex_set_owner(lock, task_thread_info(task));
> + lock->owner = task;
>
> /* set it to 0 if there are no waiters left: */
> if (likely(list_empty(&lock->wait_list)))
> @@ -260,7 +292,7 @@ __mutex_unlock_common_slowpath(atomic_t
> wake_up_process(waiter->task);
> }
>
> - debug_mutex_clear_owner(lock);
> + lock->owner = NULL;
>
> spin_unlock_mutex(&lock->wait_lock, flags);
> }
> @@ -352,7 +384,7 @@ static inline int __mutex_trylock_slowpa
>
> prev = atomic_xchg(&lock->count, -1);
> if (likely(prev == 1)) {
> - debug_mutex_set_owner(lock, current_thread_info());
> + lock->owner = current;
> mutex_acquire(&lock->dep_map, 0, 1, _RET_IP_);
> }
> /* Set it back to 0 if there are no waiters: */
> Index: linux-2.6/kernel/sched.c
> ===================================================================
> --- linux-2.6.orig/kernel/sched.c
> +++ linux-2.6/kernel/sched.c
> @@ -697,6 +697,11 @@ int runqueue_is_locked(void)
> return ret;
> }
>
> +int task_is_current(struct task_struct *p)
> +{
> + return task_rq(p)->curr == p;
> +}
> +
> /*
> * Debugging: various feature bits
> */
> Index: linux-2.6/kernel/mutex.h
> ===================================================================
> --- linux-2.6.orig/kernel/mutex.h
> +++ linux-2.6/kernel/mutex.h
> @@ -16,8 +16,6 @@
> #define mutex_remove_waiter(lock, waiter, ti) \
> __list_del((waiter)->list.prev, (waiter)->list.next)
>
> -#define debug_mutex_set_owner(lock, new_owner) do { } while (0)
> -#define debug_mutex_clear_owner(lock) do { } while (0)
> #define debug_mutex_wake_waiter(lock, waiter) do { } while (0)
> #define debug_mutex_free_waiter(waiter) do { } while (0)
> #define debug_mutex_add_waiter(lock, waiter, ti) do { } while (0)
next prev parent reply other threads:[~2009-01-06 13:29 UTC|newest]
Thread overview: 362+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-12-31 11:28 Btrfs for mainline Chris Mason
2008-12-31 18:45 ` Andrew Morton
2008-12-31 23:19 ` Chris Mason
2009-01-02 16:37 ` Ryusuke Konishi
2009-01-02 18:06 ` Chris Mason
2009-01-02 19:38 ` Chris Mason
2009-01-03 9:44 ` Ryusuke Konishi
2009-01-05 14:14 ` Chris Mason
2009-01-05 16:43 ` Ryusuke Konishi
2009-01-05 10:32 ` Nick Piggin
2009-01-05 13:21 ` Chris Mason
2009-01-05 14:39 ` generic pagecache to block mapping layer (was Re: Btrfs for mainline) Nick Piggin
2009-01-05 16:37 ` Chris Mason
2009-01-05 17:10 ` Nick Piggin
2009-01-06 17:20 ` Nick Piggin
2009-01-02 19:05 ` Btrfs for mainline Andi Kleen
2009-01-02 19:32 ` Chris Mason
2009-01-02 21:01 ` Andi Kleen
2009-01-02 21:35 ` Chris Mason
2009-01-02 22:26 ` Roland Dreier
2009-01-04 13:28 ` KOSAKI Motohiro
2009-01-04 15:56 ` Ed Tomlinson
2009-01-05 10:07 ` Chris Samuel
2009-01-05 13:18 ` Chris Mason
2009-01-05 16:33 ` J. Bruce Fields
2009-01-06 22:09 ` Jamie Lokier
2009-01-03 19:17 ` Matthew Wilcox
2009-01-03 19:50 ` Christoph Hellwig
2009-01-03 20:17 ` Chris Mason
2009-01-04 21:52 ` Arnd Bergmann
2009-01-05 14:01 ` Chris Mason
2009-01-03 21:12 ` Matthew Wilcox
2009-01-04 18:21 ` Peter Zijlstra
2009-01-04 18:41 ` Matthew Wilcox
2009-01-05 14:47 ` Nick Piggin
2009-01-05 16:23 ` Matthew Wilcox
2009-01-05 16:30 ` Chris Mason
2009-01-07 13:07 ` Ingo Molnar
2009-01-07 13:24 ` Matthew Wilcox
2009-01-07 14:56 ` Ingo Molnar
2009-01-06 11:40 ` [PATCH][RFC]: mutex: adaptive spin Peter Zijlstra
2009-01-06 12:10 ` Ingo Molnar
2009-01-06 12:21 ` Peter Zijlstra
2009-01-06 15:01 ` Matthew Wilcox
2009-01-06 13:10 ` Gregory Haskins
2009-01-06 13:16 ` Ingo Molnar
2009-01-06 13:20 ` Peter Zijlstra
2009-01-06 14:15 ` Gregory Haskins
2009-01-06 21:42 ` Paul E. McKenney
2009-01-06 21:44 ` Peter Zijlstra
2009-01-06 21:50 ` Linus Torvalds
2009-01-06 22:07 ` Peter Zijlstra
2009-01-06 22:22 ` Linus Torvalds
2009-01-06 22:43 ` Peter Zijlstra
2009-01-06 22:56 ` Linus Torvalds
2009-01-06 23:00 ` Linus Torvalds
2009-01-06 23:09 ` Matthew Wilcox
2009-01-07 0:06 ` Linus Torvalds
2009-01-06 23:16 ` Peter Zijlstra
2009-01-07 12:03 ` [PATCH -v4][RFC]: mutex: implement adaptive spinning Peter Zijlstra
2009-01-07 14:50 ` Frédéric Weisbecker
2009-01-07 14:58 ` Peter Zijlstra
2009-01-07 15:22 ` Steven Rostedt
2009-01-07 15:29 ` Steven Rostedt
2009-01-07 15:54 ` Peter Zijlstra
2009-01-07 16:25 ` Linus Torvalds
2009-01-07 16:57 ` [PATCH -v5][RFC]: " Peter Zijlstra
2009-01-07 18:55 ` Linus Torvalds
2009-01-07 20:40 ` Steven Rostedt
2009-01-07 20:55 ` Linus Torvalds
2009-01-07 21:09 ` Matthew Wilcox
2009-01-07 21:24 ` Linus Torvalds
2009-01-07 21:32 ` Ingo Molnar
2009-01-07 21:47 ` Andrew Morton
2009-01-07 21:57 ` Ingo Molnar
2009-01-07 21:39 ` Linus Torvalds
2009-01-07 21:39 ` Andi Kleen
2009-01-07 22:28 ` Gregory Haskins
2009-01-07 22:33 ` Ingo Molnar
2009-01-07 22:51 ` Peter W. Morreale
2009-01-07 23:14 ` Peter W. Morreale
2009-01-07 22:56 ` Gregory Haskins
2009-01-07 23:09 ` Steven Rostedt
2009-01-07 23:32 ` Linus Torvalds
2009-01-07 23:46 ` Steven Rostedt
2009-01-07 23:47 ` Steven Rostedt
2009-01-07 23:52 ` Linus Torvalds
2009-01-08 3:28 ` Gregory Haskins
2009-01-08 7:10 ` Peter Zijlstra
2009-01-07 23:15 ` Linus Torvalds
2009-01-07 23:18 ` Linus Torvalds
2009-01-08 3:27 ` Gregory Haskins
2009-01-08 3:38 ` Steven Rostedt
2009-01-08 4:00 ` Gregory Haskins
2009-01-07 23:23 ` Paul E. McKenney
2009-01-07 21:28 ` Ingo Molnar
2009-01-07 21:51 ` Peter Zijlstra
2009-01-07 21:58 ` Linus Torvalds
2009-01-07 22:06 ` Linus Torvalds
2009-01-07 22:18 ` Peter Zijlstra
2009-01-07 23:10 ` Linus Torvalds
2009-01-08 9:58 ` [PATCH -v6][RFC]: " Peter Zijlstra
2009-01-08 14:18 ` Ingo Molnar
2009-01-08 14:33 ` Gregory Haskins
2009-01-08 14:46 ` [PATCH -v7][RFC]: " Peter Zijlstra
2009-01-08 15:09 ` Steven Rostedt
2009-01-08 15:23 ` Peter Zijlstra
2009-01-08 15:28 ` Steven Rostedt
2009-01-08 15:30 ` Peter Zijlstra
2009-01-08 15:30 ` Steven Rostedt
2009-01-08 16:11 ` Linus Torvalds
2009-01-08 16:58 ` Linus Torvalds
2009-01-08 17:08 ` Chris Mason
2009-01-08 17:33 ` Steven Rostedt
2009-01-08 17:52 ` Linus Torvalds
2009-01-08 18:03 ` Steven Rostedt
[not found] ` <alpine.DEB.1.10.0901081300370.24688@gandalf.stny.rr.com>
2009-01-08 18:14 ` Steven Rostedt
2009-01-08 19:17 ` Chris Mason
2009-01-08 19:45 ` Steven Rostedt
2009-01-08 18:16 ` Linus Torvalds
2009-01-08 18:27 ` Chris Mason
2009-01-08 19:02 ` Chris Mason
2009-01-08 19:13 ` Linus Torvalds
2009-01-08 19:23 ` Peter Zijlstra
2009-01-09 17:40 ` Jiri Kosina
2009-01-09 9:28 ` Peter Zijlstra
2009-01-10 23:59 ` Jeremy Fitzhardinge
2009-01-08 19:54 ` Linus Torvalds
2009-01-08 20:12 ` Steven Rostedt
2009-01-09 10:47 ` Peter Zijlstra
2009-01-09 15:06 ` Peter Zijlstra
2009-01-09 15:11 ` Chris Mason
2009-01-09 15:59 ` Steven Rostedt
2009-01-09 16:03 ` Peter Zijlstra
2009-01-09 16:34 ` Linus Torvalds
2009-01-09 16:44 ` Steven Rostedt
2009-01-09 18:16 ` Peter Zijlstra
2009-01-09 18:24 ` Linus Torvalds
2009-01-08 18:00 ` Linus Torvalds
2009-01-08 18:33 ` Ingo Molnar
2009-01-08 18:41 ` H. Peter Anvin
2009-01-09 3:46 ` Linus Torvalds
2009-01-09 4:59 ` David Miller
2009-01-09 5:00 ` H. Peter Anvin
2009-01-09 13:00 ` [patch] measurements, numbers about CONFIG_OPTIMIZE_INLINING=y impact Ingo Molnar
2009-01-09 14:03 ` jim owens
2009-01-09 15:35 ` Ingo Molnar
2009-01-09 16:28 ` Linus Torvalds
2009-01-09 19:56 ` H. Peter Anvin
2009-01-10 8:55 ` Chris Samuel
2009-01-09 20:17 ` Nicholas Miell
2009-01-09 20:29 ` Linus Torvalds
2009-01-09 23:28 ` Nicholas Miell
2009-01-10 0:05 ` Linus Torvalds
2009-01-10 0:37 ` Andi Kleen
2009-01-10 0:41 ` Linus Torvalds
2009-01-10 1:08 ` Andi Kleen
2009-01-10 2:12 ` Nicholas Miell
2009-01-10 4:05 ` Linus Torvalds
2009-01-10 6:44 ` Nicholas Miell
2009-01-09 20:29 ` Steven Rostedt
2009-01-09 16:34 ` H. Peter Anvin
2009-01-09 16:44 ` Linus Torvalds
2009-01-09 16:47 ` Dirk Hohndel
2009-01-09 16:46 ` Dirk Hohndel
2009-01-09 16:51 ` H. Peter Anvin
2009-01-09 17:07 ` Steven Rostedt
2009-01-09 17:14 ` Linus Torvalds
2009-01-09 17:32 ` Andi Kleen
2009-01-09 17:20 ` Andi Kleen
2009-01-09 17:11 ` Linus Torvalds
2009-01-09 17:46 ` Andi Kleen
2009-01-09 17:28 ` Matthew Wilcox
2009-01-09 17:47 ` Andi Kleen
2009-01-09 17:39 ` Matthew Wilcox
2009-01-09 17:54 ` Linus Torvalds
2009-01-09 18:07 ` H. Peter Anvin
2009-01-09 18:19 ` Andi Kleen
2009-01-09 18:59 ` Richard Guenther
2009-01-09 19:13 ` H. Peter Anvin
2009-01-09 19:21 ` Andi Kleen
2009-01-09 19:10 ` Richard Guenther
2009-01-09 19:17 ` H. Peter Anvin
2009-01-09 19:40 ` Andi Kleen
2009-01-09 19:32 ` Richard Guenther
2009-01-09 19:09 ` Richard Guenther
2009-01-09 19:44 ` Linus Torvalds
2009-01-09 20:14 ` Richard Guenther
2009-01-09 20:26 ` Linus Torvalds
2009-01-09 20:37 ` Richard Guenther
2009-01-09 21:23 ` Theodore Tso
2009-01-09 21:33 ` Steven Rostedt
2009-01-09 20:58 ` Sam Ravnborg
2009-01-09 17:41 ` Dirk Hohndel
2009-01-09 18:02 ` Andi Kleen
2009-01-09 17:57 ` Linus Torvalds
2009-01-09 18:55 ` Andi Kleen
2009-01-09 19:00 ` Linus Torvalds
2009-01-09 19:35 ` Andi Kleen
2009-01-09 19:29 ` Matthew Wilcox
2009-01-09 19:48 ` Linus Torvalds
2009-01-09 19:52 ` Theodore Tso
2009-01-09 22:07 ` Arjan van de Ven
2009-01-09 22:44 ` Andi Kleen
[not found] ` <20090109224410.GQ26290@one.firstfloor.org>
2009-01-09 22:35 ` H. Peter Anvin
2009-01-09 22:55 ` Arjan van de Ven
2009-01-09 23:32 ` Sam Ravnborg
2009-01-10 5:29 ` Arjan van de Ven
2009-01-10 5:57 ` H. Peter Anvin
2009-01-11 22:45 ` Valdis.Kletnieks
2009-01-09 17:13 ` Christoph Hellwig
2009-01-09 15:25 ` Ingo Molnar
2009-01-08 19:00 ` [PATCH -v7][RFC]: mutex: implement adaptive spinning Andi Kleen
2009-01-09 1:42 ` H. Peter Anvin
2009-01-09 13:37 ` Ingo Molnar
2009-01-09 16:09 ` Linus Torvalds
2009-01-09 16:23 ` H. Peter Anvin
2009-01-09 16:37 ` Linus Torvalds
2009-01-09 20:41 ` Ingo Molnar
2009-01-09 20:56 ` Ingo Molnar
2009-01-09 20:56 ` Linus Torvalds
2009-01-09 21:34 ` Ingo Molnar
2009-01-09 21:41 ` Harvey Harrison
2009-01-09 21:50 ` Linus Torvalds
2009-01-09 21:59 ` Harvey Harrison
2009-01-09 22:09 ` Linus Torvalds
2009-01-09 22:13 ` Harvey Harrison
2009-01-09 22:25 ` Harvey Harrison
2009-01-10 0:53 ` Jamie Lokier
2009-01-10 1:04 ` Linus Torvalds
2009-01-10 1:13 ` Andi Kleen
2009-01-09 23:12 ` Ingo Molnar
2009-01-09 23:24 ` Linus Torvalds
2009-01-10 1:01 ` Ingo Molnar
2009-01-10 1:06 ` Linus Torvalds
2009-01-10 1:20 ` Ingo Molnar
2009-01-10 1:34 ` Linus Torvalds
2009-01-10 1:08 ` Harvey Harrison
2009-01-10 1:30 ` Linus Torvalds
2009-01-10 5:03 ` H. Peter Anvin
2009-01-10 5:28 ` Linus Torvalds
2009-01-10 5:57 ` H. Peter Anvin
2009-01-11 0:54 ` Ingo Molnar
2009-01-12 1:56 ` Jamie Lokier
2009-01-12 8:40 ` Ingo Molnar
2009-01-10 1:18 ` Steven Rostedt
2009-01-10 1:39 ` Linus Torvalds
2009-01-10 1:41 ` Andrew Morton
2009-01-10 3:02 ` Andi Kleen
2009-01-11 12:26 ` David Woodhouse
2009-01-11 18:13 ` Andi Kleen
2009-01-11 19:25 ` Linus Torvalds
2009-01-11 20:14 ` gcc inlining heuristics was " Andi Kleen
2009-01-11 20:15 ` David Woodhouse
2009-01-11 20:34 ` Andi Kleen
2009-01-11 20:51 ` Linus Torvalds
2009-01-11 23:05 ` Linus Torvalds
2009-01-12 0:12 ` Andi Kleen
2009-01-12 0:21 ` Linus Torvalds
2009-01-12 0:52 ` Andi Kleen
2009-01-12 1:20 ` H. Peter Anvin
2009-01-12 18:06 ` Bernd Schmidt
2009-01-12 19:02 ` Linus Torvalds
2009-01-12 19:32 ` Andi Kleen
2009-01-12 19:22 ` H. Peter Anvin
2009-01-12 19:45 ` Linus Torvalds
2009-01-12 23:01 ` Jamie Lokier
2009-01-12 23:19 ` Linus Torvalds
2009-01-12 19:42 ` Linus Torvalds
[not found] ` <alpine.LFD.2.00.0901121128080.6528@localhost.localdomain>
2009-01-12 20:08 ` Linus Torvalds
2009-01-12 22:03 ` Bernd Schmidt
2009-01-13 0:21 ` Linus Torvalds
2009-01-13 1:30 ` Steven Rostedt
2009-01-19 0:13 ` Ingo Molnar
2009-01-19 6:22 ` Nick Piggin
2009-01-19 21:01 ` Linus Torvalds
2009-01-20 0:51 ` Nick Piggin
2009-01-20 12:38 ` Ingo Molnar
2009-01-20 19:49 ` David Woodhouse
2009-01-20 21:05 ` Ingo Molnar
2009-01-20 21:23 ` Linus Torvalds
2009-01-20 22:05 ` Ingo Molnar
2009-01-21 1:22 ` H. Peter Anvin
2009-01-21 8:54 ` Andi Kleen
2009-01-21 8:52 ` Nick Piggin
2009-01-21 9:20 ` Andi Kleen
2009-01-21 9:25 ` Nick Piggin
2009-01-21 9:54 ` Andi Kleen
2009-01-21 10:14 ` Nick Piggin
2009-01-20 4:20 ` Andi Kleen
2009-01-20 17:43 ` Miguel F Mascarenhas Sousa Filipe
2009-01-12 19:55 ` Bernd Schmidt
2009-01-12 20:11 ` Linus Torvalds
2009-01-12 7:59 ` Hard to debug kernel issues (was Re: [PATCH -v7][RFC]: mutex: implement adaptive spinning) Chris Samuel
2009-01-10 6:44 ` [PATCH -v7][RFC]: mutex: implement adaptive spinning H. Peter Anvin
2009-01-09 21:46 ` Linus Torvalds
2009-01-09 21:58 ` Ingo Molnar
2009-01-09 21:15 ` Andi Kleen
2009-01-08 19:59 ` Harvey Harrison
2009-01-09 1:44 ` H. Peter Anvin
2009-01-09 2:24 ` Harvey Harrison
2009-01-09 5:05 ` H. Peter Anvin
2009-01-09 3:35 ` Andi Kleen
2009-01-09 3:42 ` Linus Torvalds
2009-01-09 6:57 ` Andi Kleen
2009-01-09 6:00 ` Andrew Morton
2009-01-09 6:58 ` Andi Kleen
2009-01-09 13:05 ` Chris Mason
2009-01-08 17:23 ` Peter Zijlstra
2009-01-07 22:54 ` [PATCH -v5][RFC]: " Dave Kleikamp
2009-01-07 23:19 ` Linus Torvalds
2009-01-07 23:49 ` Steven Rostedt
2009-01-07 23:57 ` Linus Torvalds
2009-01-08 2:18 ` KAMEZAWA Hiroyuki
2009-01-08 2:33 ` Steven Rostedt
2009-01-08 2:49 ` KAMEZAWA Hiroyuki
2009-01-08 6:52 ` Andi Kleen
2009-01-08 14:24 ` Steven Rostedt
2009-01-08 14:45 ` Andi Kleen
2009-01-07 21:37 ` Andi Kleen
2009-01-07 21:35 ` Andrew Morton
2009-01-07 17:20 ` [PATCH -v4][RFC]: " Chris Mason
2009-01-07 17:50 ` Linus Torvalds
2009-01-07 18:00 ` Chris Mason
2009-01-07 3:57 ` [PATCH][RFC]: mutex: adaptive spin Lai Jiangshan
2009-01-07 6:32 ` Peter Zijlstra
2009-01-07 7:34 ` Lai Jiangshan
2009-01-07 13:35 ` Matthew Wilcox
2009-01-06 22:31 ` Paul E. McKenney
2009-01-06 15:55 ` Linus Torvalds
2009-01-06 16:11 ` Linus Torvalds
2009-01-06 16:28 ` Steven Rostedt
2009-01-06 16:40 ` Linus Torvalds
2009-01-06 16:42 ` Linus Torvalds
2009-01-06 17:02 ` Ingo Molnar
2009-01-06 16:54 ` Ingo Molnar
2009-01-06 16:56 ` Ingo Molnar
2009-01-06 16:59 ` Linus Torvalds
2009-01-06 16:19 ` Chris Mason
2009-01-10 17:52 ` Pavel Machek
2009-01-06 13:29 ` Nick Piggin [this message]
2009-01-06 16:23 ` Chris Mason
2009-01-06 17:08 ` Andrew Morton
2009-01-06 17:37 ` Steven Rostedt
2009-01-06 18:02 ` Linus Torvalds
2009-01-06 18:20 ` Steven Rostedt
2009-01-06 18:28 ` Linus Torvalds
2009-01-06 18:25 ` Linus Torvalds
2009-01-06 19:03 ` Steven Rostedt
2009-01-05 14:34 ` Btrfs for mainline Chris Mason
2009-01-04 8:32 ` Gabor MICSKO
2009-01-05 14:35 ` Chris Mason
2009-01-05 15:01 ` Tomasz Torcz
2009-01-05 16:30 ` Chris Mason
2009-01-06 19:41 ` Chris Mason
2009-01-07 9:33 ` David Woodhouse
2009-01-07 18:45 ` Chris Mason
2009-01-08 20:15 ` jim owens
2009-01-11 23:34 ` Andrew Morton
2009-01-12 13:58 ` Chris Mason
2009-01-12 15:14 ` Miguel Figueiredo Mascarenhas Sousa Filipe
2009-01-12 15:17 ` Chris Mason
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