. If the owner is not
running or if we need to reschedule, then break out of the loop and return
false.
Cc: Davidlohr Bueso
Signed-off-by: Jason Low
---
kernel/locking/mutex.c | 47 ++-
1 files changed, 22 insertions(+), 25 deletions(-)
diff --git a
On Tue, 2015-02-03 at 09:16 -0800, Tim Chen wrote:
> > > >
> > > > + if (READ_ONCE(sem->owner))
> > > > + return true; /* new owner, continue spinning */
> > > > +
> > >
> > > Do you have some comparison data of whether it is more advantageous
> > > to continue spinning when
On Tue, 2015-02-03 at 11:43 -0800, Tim Chen wrote:
> On Tue, 2015-02-03 at 09:54 -0800, Jason Low wrote:
> > On Tue, 2015-02-03 at 09:16 -0800, Tim Chen wrote:
> > > > > >
> > > > > > + if (READ_ONCE(sem->owner))
> > > >
On Mon, 2015-03-02 at 11:03 -0800, Linus Torvalds wrote:
> On Mon, Mar 2, 2015 at 10:42 AM, Jason Low wrote:
> >
> > This patch converts the timers to 64 bit atomic variables and use
> > atomic add to update them without a lock. With this patch, the percent
> > of total
On Mon, 2015-03-02 at 13:44 -0800, Linus Torvalds wrote:
> On Mon, Mar 2, 2015 at 1:16 PM, Jason Low wrote:
> >
> > In original code, we set cputimer->running first so it is running while
> > we call update_gt_cputime(). Now in this patch, we swapped the 2 calls
> >
On Wed, 2015-01-28 at 17:10 -0800, Davidlohr Bueso wrote:
> if (READ_ONCE(sem->owner))
> return true; /* new owner, continue spinning */
In terms of the sem->owner check, I agree. This also reminds me of a
similar patch I was going to send out, but for mutex. The idea is that
On Thu, 2015-01-29 at 12:13 -0800, Jason Low wrote:
> On Wed, 2015-01-28 at 17:10 -0800, Davidlohr Bueso wrote:
>
> > if (READ_ONCE(sem->owner))
> > return true; /* new owner, continue spinning */
>
> In terms of the sem->owner check, I agree. This
On Thu, 2015-01-29 at 15:15 -0800, Davidlohr Bueso wrote:
> On Thu, 2015-01-29 at 12:18 -0800, Jason Low wrote:
> > /*
> > -* We break out the loop above on need_resched() and when the
> > -* owner changed, which is a sign for heavy contention. Return
> > -
On Fri, 2015-01-30 at 12:13 +0800, Zefan Li wrote:
> On 2015/1/29 4:47, Jason Low wrote:
> > The cpuset.sched_relax_domain_level can control how far we do
> > immediate load balancing on a system. However, it was found on recent
> > kernels that
aversal.
Fixes: fc560a26acce ("cpuset: replace cpuset->stack_list with
cpuset_for_each_descendant_pre()")
Cc: # 3.9+
Signed-off-by: Jason Low
---
kernel/cpuset.c |3 ---
1 files changed, 0 insertions(+), 3 deletions(-)
diff --git a/kernel/cpuset.c b/kernel/cpuset.c
index 64b257f.
On Wed, Feb 18, 2015 at 12:13 PM, Steven Rostedt wrote:
> On Wed, 18 Feb 2015 20:57:10 +0100
> Sebastian Andrzej Siewior wrote:
>
>> * Steven Rostedt | 2014-04-08 22:47:01 [-0400]:
>>
>> >From: "Steven Rostedt (Red Hat)"
>> >
>> >The readers of mainline rwsems are not allowed to nest, the rwsems
own to less than 1%.
Signed-off-by: Jason Low
---
include/linux/init_task.h |7 +++--
include/linux/sched.h | 10 ++-
kernel/fork.c |3 --
kernel/sched/stats.h | 12 ++--
kernel/time/posix-cpu-time
On Mon, 2015-03-02 at 20:43 +0100, Oleg Nesterov wrote:
> On 03/02, Oleg Nesterov wrote:
> >
> > Well, I forgot everything about this code, but let me ask anyway ;)
> >
> > On 03/02, Jason Low wrote:
> > >
> > > -static void update_gt_cputime(struct t
On Mon, 2015-03-02 at 20:40 +0100, Oleg Nesterov wrote:
> Well, I forgot everything about this code, but let me ask anyway ;)
>
> On 03/02, Jason Low wrote:
> > @@ -222,13 +239,10 @@ void thread_group_cputimer(struct task_struct *tsk,
> > struct task_cputime *times)
On Wed, 2016-04-20 at 12:30 +0200, Peter Zijlstra wrote:
> On Thu, Apr 14, 2016 at 12:13:38AM -0700, Jason Low wrote:
> > Use WFE to avoid most spinning with MCS spinlocks. This is implemented
> > with the new cmpwait() mechanism for comparing and waiting for the MCS
> > l
that it uses
the new smp_cond_load_acquire() so that ARM64 can also
override this spin loop with its own implementation using WFE.
On x86, this can also be cheaper than spinning on
smp_load_acquire().
Signed-off-by: Jason Low
---
v2 -> v3:
- Add additional comments about the use
es
the new smp_cond_load_acquire() so that ARM64 can also
override this spin loop with its own implementation using WFE.
On x86, it can also cheaper to use this than spinning on
smp_load_acquire().
Signed-off-by: Jason Low
---
kernel/locking/mcs_spinlock.h | 8
1 file changed, 4 insert
improving the system]
>
> url:
> https://github.com/0day-ci/linux/commits/Jason-Low/MCS-spinlock-Use-smp_cond_load_acquire/20160413-053726
> config: i386-randconfig-s0-201615 (attached as .config)
> reproduce:
> # save the attached .config to linux build tree
&
On Tue, 2016-04-12 at 16:40 -0700, Jason Low wrote:
> On Wed, 2016-04-13 at 06:39 +0800, kbuild test robot wrote:
> > Hi Jason,
> >
> > [auto build test ERROR on v4.6-rc3]
> > [also build test ERROR on next-20160412]
> > [cannot apply to tip/core/locking]
>
implementation using WFE.
On x86, it can also cheaper to use this than spinning on
smp_load_acquire().
Signed-off-by: Jason Low
---
Changes from v1:
- Pass l instead of &l to smp_cond_load_acquire() since
l is already a pointer to the lock variable.
kernel/locking/mcs_spinlock.h | 8
1
On Mon, 2016-07-18 at 19:15 +0200, Peter Zijlstra wrote:
> On Mon, Jul 18, 2016 at 07:16:47PM +0300, Imre Deak wrote:
> > Currently a thread sleeping on a mutex wait queue can be delayed
> > indefinitely by other threads managing to steal the lock, that is
> > acquiring the lock out-of-order before
ceable impact on system
> performance.
>
> This patchset tries to address 2 issues with Peter's patch:
>
> 1) Ding Tianhong still find that hanging task could happen in some cases.
> 2) Jason Low found that there was performance regression for some AIM7
> workloads.
---
| 100 - 900 | 76,362 JPM | 76,298 JPM |
-
| 1000 - 1900 | 77,146 JPM | 76,061 JPM |
---------
Tested-by: Jason Low
On Wed, 2016-10-12 at 10:59 -0700, Davidlohr Bueso wrote:
> On Fri, 07 Oct 2016, Peter Zijlstra wrote:
> >+/*
> >+ * Optimistic trylock that only works in the uncontended case. Make sure to
> >+ * follow with a __mutex_trylock() before failing.
> >+ */
> >+static __always_inline bool __mutex_tryloc
On Wed, Oct 5, 2016 at 10:47 PM, Davidlohr Bueso wrote:
> On Wed, 05 Oct 2016, Waiman Long wrote:
>
>> diff --git a/kernel/locking/osq_lock.c b/kernel/locking/osq_lock.c
>> index 05a3785..1e6823a 100644
>> --- a/kernel/locking/osq_lock.c
>> +++ b/kernel/locking/osq_lock.c
>> @@ -12,6 +12,23 @@
>>
for too long.
Reported-by: Imre Deak
Signed-off-by: Jason Low
---
v1->v2:
- Addressed Waiman's suggestions of needing the yield_to_waiter
flag only in the CONFIG_SMP case.
- Make sure to only clear the flag if the thread is the top waiter.
- Refactor code to clear flag into an inline fun
On Wed, 2016-08-10 at 11:44 -0700, Jason Low wrote:
> Imre reported an issue where threads are getting starved when trying
> to acquire a mutex. Threads acquiring a mutex can get arbitrarily delayed
> sleeping on a mutex because other threads can continually steal the lock
> in the fas
On Wed, 2016-08-10 at 11:44 -0700, Jason Low wrote:
> @@ -917,11 +976,12 @@ EXPORT_SYMBOL(mutex_trylock);
> int __sched
> __ww_mutex_lock(struct ww_mutex *lock, struct ww_acquire_ctx *ctx)
> {
> - int ret;
> + int ret = 1;
>
> might_
Hi Wanpeng,
On Wed, 2016-08-17 at 09:41 +0800, Wanpeng Li wrote:
> 2016-08-11 2:44 GMT+08:00 Jason Low :
> > Imre reported an issue where threads are getting starved when trying
> > to acquire a mutex. Threads acquiring a mutex can get arbitrarily delayed
> > sleeping on
ct mutex *lock,
>* Turn on the waiter spinning flag to discourage the spinner
>* from getting the lock.
Might want to update this comment to "Turn on the yield to waiter flag
to discourage optimistic spinners from stealing the lock."
Besides that:
Acked-by: Jason Low
for too long.
Reported-by: Imre Deak
Signed-off-by: Jason Low
---
include/linux/mutex.h | 2 +
kernel/locking/mutex.c | 122 +++--
2 files changed, 99 insertions(+), 25 deletions(-)
diff --git a/include/linux/mutex.h b/include/linux/mutex.h
index
On Thu, 2016-08-18 at 17:58 +0200, Peter Zijlstra wrote:
> On Thu, Aug 11, 2016 at 11:01:27AM -0400, Waiman Long wrote:
> > The following is the updated patch that should fix the build error in
> > non-x86 platform.
> >
>
> This patch was whitespace challenged, but I think I munged it properly.
>
On Thu, 2016-08-18 at 17:39 -0700, Jason Low wrote:
> Imre reported an issue where threads are getting starved when trying
> to acquire a mutex. Threads acquiring a mutex can get arbitrarily delayed
> sleeping on a mutex because other threads can continually steal the lock
> in the fas
On Fri, 2016-06-03 at 10:04 +0200, Ingo Molnar wrote:
> * Peter Zijlstra wrote:
>
> > On Mon, May 16, 2016 at 06:12:25PM -0700, Linus Torvalds wrote:
> > > On Mon, May 16, 2016 at 5:37 PM, Jason Low wrote:
> > > >
> > > > This rest of the s
On Sat, 2016-06-04 at 00:36 +0200, Peter Zijlstra wrote:
> On Fri, Jun 03, 2016 at 11:09:54AM -0700, Jason Low wrote:
> > --- a/arch/alpha/include/asm/rwsem.h
> > +++ b/arch/alpha/include/asm/rwsem.h
> > @@ -25,8 +25,8 @@ static inline void __down_read(struct rw_semaphore *sem
to an atomic_long_t
since it is used it as an atomic variable. This allows us to also remove
the rwsem_atomic_{add,update} abstraction and reduce 100+ lines of code.
Jason Low (2):
locking/rwsem: Convert sem->count to atomic_long_t
Remove rwsem_atomic_add() and rwsem_atomic_update()
arch/alph
add,update} definitions across the various architectures.
Suggested-by: Peter Zijlstra
Signed-off-by: Jason Low
---
arch/alpha/include/asm/rwsem.h | 26 +-
arch/ia64/include/asm/rwsem.h | 24
include/asm-generic/rwsem.h| 6 +++---
include/lin
The rwsem-xadd count has been converted to an atomic variable and the
rwsem code now directly uses atomic_long_add() and
atomic_long_add_return(), so we can remove the arch implementations of
rwsem_atomic_add() and rwsem_atomic_update().
Signed-off-by: Jason Low
---
arch/alpha/include/asm
Hi Vincent,
On Fri, 2015-07-31 at 11:49 +0200, Vincent Guittot wrote:
> Since commit d4573c3e1c99 ("sched: Improve load balancing in the presence
> of idle CPUs"), the ILB CPU starts with the idle load balancing of other
> idle CPUs and finishes with itself in order to speed up the spread of tasks
On Mon, 2015-06-29 at 17:28 +0200, Fredrik Markström wrote:
> Hello Peter, the locking part looks good, I don't have a strong
> opinion on per task/signal lock vs global lock.
>
> But with the patch we still update prev->utime and prev->stime
> independently, which was the original problem. But m
On Mon, 2015-06-29 at 21:08 +0200, Fredrik Markström wrote:
> I don't think that is good enough. I believe the reason the
> max()-stuff was initially put there to make sure the returned stime
> and utime components are increasing monotonically. The scaling code
> can cause either or to decrease fro
On Thu, 2016-02-04 at 16:55 +0800, huang ying wrote:
> Hi, Low,
>
> On Thu, Feb 4, 2016 at 9:35 AM, Jason Low wrote:
> > I've done some testing with this patch with some of the AIM7 workloads
> > and found that this reduced throughput by about 10%. The reduction in
are:
>
> - waiters are on the wait list and need to be taken off
> - mutex_optimistic_spin() sets the lock->count to 0 on acquire
>even though there might be more tasks on the wait list.
>
> Cc: Jason Low
> Cc: Ingo Molnar
> Cc: Tim Chen
> Cc: Linus Torvalds
On Thu, 2016-08-11 at 11:40 -0400, Waiman Long wrote:
> On 08/10/2016 02:44 PM, Jason Low wrote:
> > +static inline void do_yield_to_waiter(struct mutex *lock, int *wakeups)
> > +{
> > + return;
> > +}
> > +
> > +static inline void clear_yield_to_waiter(st
;
> url:
> https://github.com/0day-ci/linux/commits/Jason-Low/locking-mutex-Prevent-lock-starvation-when-spinning-is-enabled/20160811-034327
> config: x86_64-randconfig-x013-201632 (attached as .config)
> compiler: gcc-6 (Debian 6.1.1-9) 6.1.1 20160705
> reproduce:
>
On Tue, Oct 4, 2016 at 12:06 PM, Davidlohr Bueso wrote:
> On Thu, 18 Aug 2016, Waiman Long wrote:
>
>> The osq_lock() and osq_unlock() function may not provide the necessary
>> acquire and release barrier in some cases. This patch makes sure
>> that the proper barriers are provided when osq_lock()
On Tue, 2016-08-23 at 09:17 -0700, Davidlohr Bueso wrote:
> What's the motivation here? Is it just to unify counter and owner for
> the starvation issue? If so, is this really the path we wanna take for
> a small debug corner case?
And we thought our other patch was a bit invasive :-)
> I have n
Commit-ID: f48627e686a69f5215cb0761e731edb3d9859dd9
Gitweb: http://git.kernel.org/tip/f48627e686a69f5215cb0761e731edb3d9859dd9
Author: Jason Low
AuthorDate: Fri, 13 Sep 2013 11:26:53 -0700
Committer: Ingo Molnar
CommitDate: Fri, 20 Sep 2013 12:03:46 +0200
sched/balancing: Periodically
Commit-ID: abfafa54db9aba404e8e6763503f04d35bd07138
Gitweb: http://git.kernel.org/tip/abfafa54db9aba404e8e6763503f04d35bd07138
Author: Jason Low
AuthorDate: Fri, 13 Sep 2013 11:26:51 -0700
Committer: Ingo Molnar
CommitDate: Fri, 20 Sep 2013 12:03:41 +0200
sched: Reduce overestimating
Commit-ID: 9bd721c55c8a886b938a45198aab0ccb52f1f7fa
Gitweb: http://git.kernel.org/tip/9bd721c55c8a886b938a45198aab0ccb52f1f7fa
Author: Jason Low
AuthorDate: Fri, 13 Sep 2013 11:26:52 -0700
Committer: Ingo Molnar
CommitDate: Fri, 20 Sep 2013 12:03:44 +0200
sched/balancing: Consider max
Commit-ID: 7c177d994eb9637302b79e80d331f48dfbe26368
Gitweb: http://git.kernel.org/tip/7c177d994eb9637302b79e80d331f48dfbe26368
Author: Jason Low
AuthorDate: Wed, 14 Oct 2015 12:07:53 -0700
Committer: Thomas Gleixner
CommitDate: Thu, 15 Oct 2015 11:23:41 +0200
posix_cpu_timer: Optimize
Commit-ID: 934715a191e4be0c602d39455a7a74316f274d60
Gitweb: http://git.kernel.org/tip/934715a191e4be0c602d39455a7a74316f274d60
Author: Jason Low
AuthorDate: Wed, 14 Oct 2015 12:07:54 -0700
Committer: Thomas Gleixner
CommitDate: Thu, 15 Oct 2015 11:23:41 +0200
posix_cpu_timer: Check
Commit-ID: d5c373eb5610686162ff50429f63f4c00c554799
Gitweb: http://git.kernel.org/tip/d5c373eb5610686162ff50429f63f4c00c554799
Author: Jason Low
AuthorDate: Wed, 14 Oct 2015 12:07:55 -0700
Committer: Thomas Gleixner
CommitDate: Thu, 15 Oct 2015 11:23:41 +0200
posix_cpu_timer: Convert
Commit-ID: c8d75aa47dd585c9538a8205e9bb9847e12cfb84
Gitweb: http://git.kernel.org/tip/c8d75aa47dd585c9538a8205e9bb9847e12cfb84
Author: Jason Low
AuthorDate: Wed, 14 Oct 2015 12:07:56 -0700
Committer: Thomas Gleixner
CommitDate: Thu, 15 Oct 2015 11:23:41 +0200
posix_cpu_timer: Reduce
Commit-ID: 01ac33c1f907b366dcc50551316b372f1519cca9
Gitweb: http://git.kernel.org/tip/01ac33c1f907b366dcc50551316b372f1519cca9
Author: Jason Low
AuthorDate: Wed, 8 Apr 2015 12:39:19 -0700
Committer: Ingo Molnar
CommitDate: Thu, 9 Apr 2015 08:10:23 +0200
locking/mutex: Further simplify
Commit-ID: 7f56b58a92aaf2cab049f32a19af7cc57a3972f2
Gitweb: https://git.kernel.org/tip/7f56b58a92aaf2cab049f32a19af7cc57a3972f2
Author: Jason Low
AuthorDate: Thu, 26 Apr 2018 11:34:22 +0100
Committer: Ingo Molnar
CommitDate: Fri, 27 Apr 2018 09:48:49 +0200
locking/mcs: Use
Commit-ID: 0d00c7b20c7716ce08399570ea48813ecf001aa8
Gitweb: http://git.kernel.org/tip/0d00c7b20c7716ce08399570ea48813ecf001aa8
Author: Jason Low
AuthorDate: Sun, 12 Jan 2014 15:31:22 -0800
Committer: Ingo Molnar
CommitDate: Mon, 13 Jan 2014 11:45:17 +0100
futexes: Clean up various
Commit-ID: 46af29e479cc0c1c63633007993af5292c2c3e75
Gitweb: http://git.kernel.org/tip/46af29e479cc0c1c63633007993af5292c2c3e75
Author: Jason Low
AuthorDate: Tue, 28 Jan 2014 11:13:12 -0800
Committer: Ingo Molnar
CommitDate: Tue, 11 Mar 2014 12:14:52 +0100
locking/mutexes: Return false
Commit-ID: 1d8fe7dc8078b23e060ec62ccb4cdc1ac3c41bf8
Gitweb: http://git.kernel.org/tip/1d8fe7dc8078b23e060ec62ccb4cdc1ac3c41bf8
Author: Jason Low
AuthorDate: Tue, 28 Jan 2014 11:13:14 -0800
Committer: Ingo Molnar
CommitDate: Tue, 11 Mar 2014 12:14:54 +0100
locking/mutexes: Unlock the
Commit-ID: 47667fa1502e4d759df87e9cc7fbc0f202483361
Gitweb: http://git.kernel.org/tip/47667fa1502e4d759df87e9cc7fbc0f202483361
Author: Jason Low
AuthorDate: Tue, 28 Jan 2014 11:13:13 -0800
Committer: Ingo Molnar
CommitDate: Tue, 11 Mar 2014 12:14:53 +0100
locking/mutexes: Modify the
Commit-ID: df6b728416e32fe7fe04e5c81ca9ca2d6416735a
Gitweb: http://git.kernel.org/tip/df6b728416e32fe7fe04e5c81ca9ca2d6416735a
Author: Jason Low
AuthorDate: Thu, 8 May 2014 17:49:22 -0700
Committer: Thomas Gleixner
CommitDate: Mon, 19 May 2014 22:02:41 +0900
sched: Fix next_balance
Commit-ID: 0e5b5337f0da073e1f17aec3c322ea7826975d0d
Gitweb: http://git.kernel.org/tip/0e5b5337f0da073e1f17aec3c322ea7826975d0d
Author: Jason Low
AuthorDate: Mon, 28 Apr 2014 15:45:54 -0700
Committer: Ingo Molnar
CommitDate: Wed, 7 May 2014 11:51:36 +0200
sched: Fix updating rq
Commit-ID: 2b4cfe64dee0d84506b951d81bf55d9891744d25
Gitweb: http://git.kernel.org/tip/2b4cfe64dee0d84506b951d81bf55d9891744d25
Author: Jason Low
AuthorDate: Wed, 23 Apr 2014 18:30:34 -0700
Committer: Ingo Molnar
CommitDate: Wed, 7 May 2014 11:51:37 +0200
sched/numa: Initialize newidle
Commit-ID: 39a4d9ca77a31503c6317e49742341d0859d5cb2
Gitweb: http://git.kernel.org/tip/39a4d9ca77a31503c6317e49742341d0859d5cb2
Author: Jason Low
AuthorDate: Wed, 23 Apr 2014 18:30:35 -0700
Committer: Ingo Molnar
CommitDate: Wed, 7 May 2014 13:33:53 +0200
sched/fair: Stop searching for
Commit-ID: 37e9562453b813d2ea527bd9531fef2c3c592847
Gitweb: http://git.kernel.org/tip/37e9562453b813d2ea527bd9531fef2c3c592847
Author: Jason Low
AuthorDate: Fri, 4 Jul 2014 20:49:32 -0700
Committer: Ingo Molnar
CommitDate: Wed, 16 Jul 2014 13:28:02 +0200
locking/rwsem: Allow
Commit-ID: 4d9d951e6b5df85ccfca2c5bd8b4f5c71d256b65
Gitweb: http://git.kernel.org/tip/4d9d951e6b5df85ccfca2c5bd8b4f5c71d256b65
Author: Jason Low
AuthorDate: Mon, 14 Jul 2014 10:27:50 -0700
Committer: Ingo Molnar
CommitDate: Wed, 16 Jul 2014 13:28:05 +0200
locking/spinlocks/mcs
Commit-ID: 33ecd2083a9560fbc1ef1b1279ef3ecb4c012a4f
Gitweb: http://git.kernel.org/tip/33ecd2083a9560fbc1ef1b1279ef3ecb4c012a4f
Author: Jason Low
AuthorDate: Mon, 14 Jul 2014 10:27:51 -0700
Committer: Ingo Molnar
CommitDate: Wed, 16 Jul 2014 13:28:06 +0200
locking/spinlocks/mcs: Micro
Commit-ID: ce069fc920e5734558b3d9cbef1ab06cf01ee793
Gitweb: http://git.kernel.org/tip/ce069fc920e5734558b3d9cbef1ab06cf01ee793
Author: Jason Low
AuthorDate: Mon, 14 Jul 2014 10:27:52 -0700
Committer: Ingo Molnar
CommitDate: Wed, 16 Jul 2014 14:57:03 +0200
locking/rwsem: Reduce the
Commit-ID: 90631822c5d307b5410500806e8ac3e63928aa3e
Gitweb: http://git.kernel.org/tip/90631822c5d307b5410500806e8ac3e63928aa3e
Author: Jason Low
AuthorDate: Mon, 14 Jul 2014 10:27:49 -0700
Committer: Ingo Molnar
CommitDate: Wed, 16 Jul 2014 13:28:04 +0200
locking/spinlocks/mcs
Commit-ID: 046a619d8e9746fa4c0e29e8c6b78e16efc008a8
Gitweb: http://git.kernel.org/tip/046a619d8e9746fa4c0e29e8c6b78e16efc008a8
Author: Jason Low
AuthorDate: Mon, 14 Jul 2014 10:27:48 -0700
Committer: Ingo Molnar
CommitDate: Wed, 16 Jul 2014 13:28:03 +0200
locking/spinlocks/mcs: Rename
Commit-ID: 0c3c0f0d6e56422cef60a33726d062e9923005c3
Gitweb: http://git.kernel.org/tip/0c3c0f0d6e56422cef60a33726d062e9923005c3
Author: Jason Low
AuthorDate: Wed, 11 Jun 2014 11:37:20 -0700
Committer: Ingo Molnar
CommitDate: Sat, 5 Jul 2014 11:25:41 +0200
locking/mutexes: Correct
Commit-ID: 0d968dd8c6aced585b86fa7ba8ce4573bf19e848
Gitweb: http://git.kernel.org/tip/0d968dd8c6aced585b86fa7ba8ce4573bf19e848
Author: Jason Low
AuthorDate: Wed, 11 Jun 2014 11:37:22 -0700
Committer: Ingo Molnar
CommitDate: Sat, 5 Jul 2014 11:25:42 +0200
locking/mutexes: Try to
Commit-ID: 1e820c9608eace237e2c519d8fd9074aec479d81
Gitweb: http://git.kernel.org/tip/1e820c9608eace237e2c519d8fd9074aec479d81
Author: Jason Low
AuthorDate: Wed, 11 Jun 2014 11:37:21 -0700
Committer: Ingo Molnar
CommitDate: Sat, 5 Jul 2014 11:25:41 +0200
locking/mutexes: Delete the
Commit-ID: 72d5305dcb3637913c2c37e847a4de9028e49244
Gitweb: http://git.kernel.org/tip/72d5305dcb3637913c2c37e847a4de9028e49244
Author: Jason Low
AuthorDate: Wed, 11 Jun 2014 11:37:23 -0700
Committer: Ingo Molnar
CommitDate: Sat, 5 Jul 2014 11:25:42 +0200
locking/mutexes: Optimize
Commit-ID: 52a08ef1f13a11289c9e18cd4cfb4e51c024058b
Gitweb: http://git.kernel.org/tip/52a08ef1f13a11289c9e18cd4cfb4e51c024058b
Author: Jason Low
AuthorDate: Thu, 8 May 2014 17:49:22 -0700
Committer: Ingo Molnar
CommitDate: Thu, 22 May 2014 11:16:32 +0200
sched: Fix the rq
Commit-ID: 5faeb8adb956a5ad6579c4e309e8689943ad8294
Gitweb: http://git.kernel.org/tip/5faeb8adb956a5ad6579c4e309e8689943ad8294
Author: Jason Low
AuthorDate: Tue, 21 Jan 2014 15:36:05 -0800
Committer: Ingo Molnar
CommitDate: Tue, 28 Jan 2014 13:13:28 +0100
locking/mcs: Micro-optimize
Commit-ID: 8236d907ab3411ad452280faa8b26c1347327380
Gitweb: http://git.kernel.org/tip/8236d907ab3411ad452280faa8b26c1347327380
Author: Jason Low
AuthorDate: Tue, 2 Sep 2014 00:41:24 -0700
Committer: Ingo Molnar
CommitDate: Tue, 9 Sep 2014 06:47:29 +0200
sched: Reduce contention in
Commit-ID: debfab74e453f079cd8b12b0604387a8c510ef3a
Gitweb: http://git.kernel.org/tip/debfab74e453f079cd8b12b0604387a8c510ef3a
Author: Jason Low
AuthorDate: Tue, 16 Sep 2014 17:16:57 -0700
Committer: Ingo Molnar
CommitDate: Fri, 3 Oct 2014 06:09:29 +0200
locking/rwsem: Avoid double
Commit-ID: 7e5a2c1729f1612618ed236249a15bf15f309325
Gitweb: http://git.kernel.org/tip/7e5a2c1729f1612618ed236249a15bf15f309325
Author: Jason Low
AuthorDate: Thu, 30 Apr 2015 17:28:14 -0700
Committer: Ingo Molnar
CommitDate: Fri, 8 May 2015 12:13:13 +0200
sched/numa: Document usages of
Commit-ID: 1018016c706f7ff9f56fde3a649789c47085a293
Gitweb: http://git.kernel.org/tip/1018016c706f7ff9f56fde3a649789c47085a293
Author: Jason Low
AuthorDate: Tue, 28 Apr 2015 13:00:22 -0700
Committer: Ingo Molnar
CommitDate: Fri, 8 May 2015 12:15:31 +0200
sched, timer: Replace
Commit-ID: 971e8a985482c76487edb5a49811e99b96e846e1
Gitweb: http://git.kernel.org/tip/971e8a985482c76487edb5a49811e99b96e846e1
Author: Jason Low
AuthorDate: Tue, 28 Apr 2015 13:00:23 -0700
Committer: Ingo Molnar
CommitDate: Fri, 8 May 2015 12:17:45 +0200
sched, timer: Provide an
Commit-ID: 316c1608d15c736439d4065ed12f306db554b3da
Gitweb: http://git.kernel.org/tip/316c1608d15c736439d4065ed12f306db554b3da
Author: Jason Low
AuthorDate: Tue, 28 Apr 2015 13:00:20 -0700
Committer: Ingo Molnar
CommitDate: Fri, 8 May 2015 12:11:32 +0200
sched, timer: Convert usages
Commit-ID: 7110744516276e906f9197e2857d026eb2343393
Gitweb: http://git.kernel.org/tip/7110744516276e906f9197e2857d026eb2343393
Author: Jason Low
AuthorDate: Tue, 28 Apr 2015 13:00:24 -0700
Committer: Ingo Molnar
CommitDate: Fri, 8 May 2015 12:17:46 +0200
sched, timer: Use the atomic
Commit-ID: 920ce39f6c204d4ce4d8acebe7522f0dfa95f662
Gitweb: http://git.kernel.org/tip/920ce39f6c204d4ce4d8acebe7522f0dfa95f662
Author: Jason Low
AuthorDate: Fri, 8 May 2015 14:31:50 -0700
Committer: Ingo Molnar
CommitDate: Sun, 10 May 2015 12:45:27 +0200
sched, timer: Fix
Commit-ID: 9198f6edfd9ced74fd90b238d5a354aeac89bdfa
Gitweb: http://git.kernel.org/tip/9198f6edfd9ced74fd90b238d5a354aeac89bdfa
Author: Jason Low
AuthorDate: Fri, 6 Mar 2015 23:45:31 -0800
Committer: Ingo Molnar
CommitDate: Sat, 7 Mar 2015 09:50:49 +0100
locking/rwsem: Fix lock
Commit-ID: 07d2413a61db6500f58e614e873eed79d7f2ed72
Gitweb: http://git.kernel.org/tip/07d2413a61db6500f58e614e873eed79d7f2ed72
Author: Jason Low
AuthorDate: Mon, 2 Feb 2015 13:59:26 -0800
Committer: Ingo Molnar
CommitDate: Wed, 18 Feb 2015 16:57:07 +0100
locking/mutex: In
Commit-ID: be1f7bf217ebb1e42190d7d0b332c89ea7871378
Gitweb: http://git.kernel.org/tip/be1f7bf217ebb1e42190d7d0b332c89ea7871378
Author: Jason Low
AuthorDate: Mon, 2 Feb 2015 13:59:27 -0800
Committer: Ingo Molnar
CommitDate: Wed, 18 Feb 2015 16:57:08 +0100
locking/mutex: Refactor
Commit-ID: 8ee62b1870be8e630158701632a533d0378e15b8
Gitweb: http://git.kernel.org/tip/8ee62b1870be8e630158701632a533d0378e15b8
Author: Jason Low
AuthorDate: Fri, 3 Jun 2016 22:26:02 -0700
Committer: Ingo Molnar
CommitDate: Wed, 8 Jun 2016 15:16:42 +0200
locking/rwsem: Convert sem
Commit-ID: c0fcb6c2d332041256dc55d8a1ec3c0a2d0befb8
Gitweb: http://git.kernel.org/tip/c0fcb6c2d332041256dc55d8a1ec3c0a2d0befb8
Author: Jason Low
AuthorDate: Mon, 16 May 2016 17:38:00 -0700
Committer: Ingo Molnar
CommitDate: Fri, 3 Jun 2016 09:47:13 +0200
locking/rwsem: Optimize write
Commit-ID: 6e2814745c67ab422b86262b05e6f23a56f28aa3
Gitweb: http://git.kernel.org/tip/6e2814745c67ab422b86262b05e6f23a56f28aa3
Author: Jason Low
AuthorDate: Fri, 20 May 2016 15:19:36 -0700
Committer: Ingo Molnar
CommitDate: Fri, 3 Jun 2016 12:06:10 +0200
locking/mutex: Set and clear
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