On Wed, Apr 03, 2019 at 09:25:50AM -0700, Paul E. McKenney wrote:
> On Wed, Apr 03, 2019 at 11:50:46AM +0200, Peter Zijlstra wrote:
> > On Tue, Apr 02, 2019 at 06:18:53AM -0700, Paul E. McKenney wrote:
> > > On Tue, Apr 02, 2019 at 09:09:53AM +0200, Peter Zijlstra wrote:
> > > > On Mon, Apr 01,
On Wed, Apr 03, 2019 at 11:50:46AM +0200, Peter Zijlstra wrote:
> On Tue, Apr 02, 2019 at 06:18:53AM -0700, Paul E. McKenney wrote:
> > On Tue, Apr 02, 2019 at 09:09:53AM +0200, Peter Zijlstra wrote:
> > > On Mon, Apr 01, 2019 at 10:22:57AM -0700, Paul E. McKenney wrote:
>
> > > > Or am I missing
On Tue, Apr 02, 2019 at 06:18:53AM -0700, Paul E. McKenney wrote:
> On Tue, Apr 02, 2019 at 09:09:53AM +0200, Peter Zijlstra wrote:
> > On Mon, Apr 01, 2019 at 10:22:57AM -0700, Paul E. McKenney wrote:
> > > Or am I missing something that gets the scheduler on the job faster?
> >
> > Oh urgh,
On Tue, Apr 02, 2019 at 09:09:53AM +0200, Peter Zijlstra wrote:
> On Mon, Apr 01, 2019 at 10:22:57AM -0700, Paul E. McKenney wrote:
> > > > The initial solution to this problem was to use set_tsk_need_resched()
> > > > and
> > > > set_preempt_need_resched() to force a future context switch, which
On Mon, Apr 01, 2019 at 10:22:57AM -0700, Paul E. McKenney wrote:
> > > The initial solution to this problem was to use set_tsk_need_resched() and
> > > set_preempt_need_resched() to force a future context switch, which allows
> > > rcu_preempt_note_context_switch() to report the deferred
On Mon, Apr 01, 2019 at 10:22:57AM -0700, Paul E. McKenney wrote:
> On Mon, Apr 01, 2019 at 10:32:11AM +0200, Peter Zijlstra wrote:
> > On Fri, Mar 29, 2019 at 11:26:34AM -0700, Paul E. McKenney wrote:
> > > When RCU core processing is offloaded from RCU_SOFTIRQ to the rcuc
> > > kthreads, a full
On Mon, Apr 01, 2019 at 10:32:11AM +0200, Peter Zijlstra wrote:
> On Fri, Mar 29, 2019 at 11:26:34AM -0700, Paul E. McKenney wrote:
> > When RCU core processing is offloaded from RCU_SOFTIRQ to the rcuc
> > kthreads, a full and unconditional wakeup is required to initiate RCU
> > core processing.
On Fri, Mar 29, 2019 at 11:26:34AM -0700, Paul E. McKenney wrote:
> When RCU core processing is offloaded from RCU_SOFTIRQ to the rcuc
> kthreads, a full and unconditional wakeup is required to initiate RCU
> core processing. In contrast, when RCU core processing is carried
> out by RCU_SOFTIRQ,
When RCU core processing is offloaded from RCU_SOFTIRQ to the rcuc
kthreads, a full and unconditional wakeup is required to initiate RCU
core processing. In contrast, when RCU core processing is carried
out by RCU_SOFTIRQ, a raise_softirq() suffices. Of course, there are
situations where
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