Re: [PATCH v2] futex: lower the lock contention on the HB lock during wake up
On Wed, 2015-06-17 at 16:28 +0200, Sebastian Andrzej Siewior wrote: > On 06/17/2015 04:17 PM, Mike Galbraith wrote: > > On Wed, 2015-06-17 at 10:33 +0200, Sebastian Andrzej Siewior wrote:...
View Article[tip:sched/core] locking/rtmutex: Implement lockless top-waiter wakeup
Commit-ID: 45ab4effc3bee6f8a5cb05652b7bb895ec5b6a7a Gitweb: http://git.kernel.org/tip/45ab4effc3bee6f8a5cb05652b7bb895ec5b6a7a Author: Davidlohr Bueso <dave@stgolabs.net> AuthorDate: Tue, 19 May...
View Article[tip:sched/core] futex: Lower the lock contention on the HB lock during wake up
Commit-ID: 881bd58d6e9eba4240b9dbc49fdc03a3374d7508 Gitweb: http://git.kernel.org/tip/881bd58d6e9eba4240b9dbc49fdc03a3374d7508 Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>...
View Article[tip:sched/core] locking/rtmutex: Update stale plist comments
Commit-ID: f5de9f848cdfba072a0466c24891167c0c8b3be3 Gitweb: http://git.kernel.org/tip/f5de9f848cdfba072a0466c24891167c0c8b3be3 Author: Davidlohr Bueso <dave@stgolabs.net> AuthorDate: Tue, 19 May...
View ArticleRe: [PATCH v2] futex: lower the lock contention on the HB lock during wake up
On Wed, Jun 17, 2015 at 1:33 AM, Sebastian Andrzej Siewior <bigeasy@linutronix.de> wrote: > wake_futex_pi() wakes the task before releasing the hash bucket lock > (HB). The first thing the...
View ArticleRe: [PATCH v2] futex: lower the lock contention on the HB lock during wake up
On Fri, 19 Jun 2015, Kevin Hilman wrote: > On Wed, Jun 17, 2015 at 1:33 AM, Sebastian Andrzej Siewior > A handful of boot test failures on ARM/OMAP were found by kernelci.org > in...
View ArticleRe: [PATCH v2] futex: lower the lock contention on the HB lock during wake up
Thomas Gleixner <tglx@linutronix.de> writes: > On Fri, 19 Jun 2015, Kevin Hilman wrote: >> On Wed, Jun 17, 2015 at 1:33 AM, Sebastian Andrzej Siewior >> A handful of boot test...
View Article[tip:sched/locking] locking/rtmutex: Update stale plist comments
Commit-ID: 9f40a51a35a0e1445cc4873251c3df2631eda294 Gitweb: http://git.kernel.org/tip/9f40a51a35a0e1445cc4873251c3df2631eda294 Author: Davidlohr Bueso <dave@stgolabs.net> AuthorDate: Tue, 19 May...
View Article[tip:sched/locking] futex: Lower the lock contention on the HB lock during...
Commit-ID: 802ab58da74bb49ab348d2872190ef26ddc1a3e0 Gitweb: http://git.kernel.org/tip/802ab58da74bb49ab348d2872190ef26ddc1a3e0 Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>...
View ArticleRe: [PATCH v2] futex: lower the lock contention on the HB lock during wake up
On Wed, 2015-06-17 at 16:28 +0200, Sebastian Andrzej Siewior wrote: > On 06/17/2015 04:17 PM, Mike Galbraith wrote: > > On Wed, 2015-06-17 at 10:33 +0200, Sebastian Andrzej Siewior wrote:...
View ArticleRE: [PATCH v2] futex: lower the lock contention on the HB lock during wake up
Hi Just in the list, I see the patch "[PATCH v2] futex: lower the lock contention on the HB lock during wake up" at...
View ArticleRE: [PATCH v2] futex: lower the lock contention on the HB lock during wake up
On Tue, 15 Sep 2015, Zhu Jefferry wrote: Please configure your e-mail client proper and follow the basic rules: - Choose a meaningful subject for your questions You just copied a random subject line...
View ArticleRE: [PATCH v2] futex: lower the lock contention on the HB lock during wake up
Thanks for your detail guideline and explanations. Please see my questions in-line. > -----Original Message----- > From: Thomas Gleixner [mailto:tglx@linutronix.de] > Sent: Wednesday,...
View ArticleRE: [PATCH v2] futex: lower the lock contention on the HB lock during wake up
On Wed, 16 Sep 2015, Zhu Jefferry wrote: > Thanks for your detail guideline and explanations. Please see my questions in-line. Please trim the reply to the relevant sections. It's annoying if I...
View ArticleRE: [PATCH v2] futex: lower the lock contention on the HB lock during wake up
> > I assume your pseudo code set_waiter_bit is mapped to the real code > > "futex_lock_pi_atomic", It's possible for futex_lock_pi_atomic to > > successfully set FUTEX_WAITERS bit,...
View ArticleRE: [PATCH v2] futex: lower the lock contention on the HB lock during wake up
On Wed, 16 Sep 2015, Zhu Jefferry wrote: > The application is a multi-thread program, to use the pairs of mutex_lock and > mutex_unlock to protect the shared data structure. The type of this...
View ArticleRE: [PATCH v2] futex: lower the lock contention on the HB lock during wake up
> On Wed, 16 Sep 2015, Zhu Jefferry wrote: > > The application is a multi-thread program, to use the pairs of > > mutex_lock and mutex_unlock to protect the shared data structure. The...
View ArticleRE: [PATCH v2] futex: lower the lock contention on the HB lock during wake up
On Wed, 16 Sep 2015, Zhu Jefferry wrote: > > > The primary debugging shows the content of __lock is wrong in first. > > > After a call of Mutex_unlock, the value of __lock should not...
View ArticleRE: [PATCH v2] futex: lower the lock contention on the HB lock during wake up
> On Wed, 16 Sep 2015, Zhu Jefferry wrote: > > > > The primary debugging shows the content of __lock is wrong in first. > > > > After a call of Mutex_unlock, the value of...
View ArticleRE: [PATCH v2] futex: lower the lock contention on the HB lock during wake up
On Wed, 16 Sep 2015, Zhu Jefferry wrote: > Besides the application did not check the return value, the mutex_unlock in > Libc did not check the return value from kernel neither. That's even...
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