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Re: [PATCH 2/2] locking/percpu-rwsem: Introduce bias knob

From "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Newsgroups linux.kernel
Subject Re: [PATCH 2/2] locking/percpu-rwsem: Introduce bias knob
Date 2016-07-15 17:40 +0200
Message-ID <rVdnz-ap-9@gated-at.bofh.it> (permalink)
References (2 earlier) <rUTRU-4Q7-35@gated-at.bofh.it> <rUUuC-5j0-19@gated-at.bofh.it> <rVblM-7q0-19@gated-at.bofh.it> <rVbvr-7t6-1@gated-at.bofh.it> <rVbF8-7wy-17@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Fri, Jul 15, 2016 at 03:45:24PM +0200, Oleg Nesterov wrote:
> On 07/15, Paul E. McKenney wrote:
> >
> > On Fri, Jul 15, 2016 at 03:27:09PM +0200, Oleg Nesterov wrote:
> > >
> > > Heh ;) I too think it should be renamed. I'd suggest
> > >
> > > 	__rcu_sync_enter(rss);
> > >
> > > although I do not really mind and agree with any name.
> >
> > Hmmm...  Why not just move the checks out into the caller?  That
> > would make the intent much more clear.
> 
> Hmm. which caller?

The ones associated with a percpu_rwsem_bias of PERCPU_RWSEM_READER.

							Thanx, Paul

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Thread

[PATCH 2/2] locking/percpu-rwsem: Introduce bias knob Peter Zijlstra <peterz@infradead.org> - 2016-07-14 20:40 +0200
  Re: [PATCH 2/2] locking/percpu-rwsem: Introduce bias knob Oleg Nesterov <oleg@redhat.com> - 2016-07-14 20:50 +0200
    Re: [PATCH 2/2] locking/percpu-rwsem: Introduce bias knob Peter Zijlstra <peterz@infradead.org> - 2016-07-14 21:00 +0200
    Re: [PATCH 2/2] locking/percpu-rwsem: Introduce bias knob Peter Zijlstra <peterz@infradead.org> - 2016-07-14 21:30 +0200
      Re: [PATCH 2/2] locking/percpu-rwsem: Introduce bias knob "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-07-14 21:30 +0200
        Re: [PATCH 2/2] locking/percpu-rwsem: Introduce bias knob Peter Zijlstra <peterz@infradead.org> - 2016-07-14 21:40 +0200
          Re: [PATCH 2/2] locking/percpu-rwsem: Introduce bias knob "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-07-14 22:00 +0200
      Re: [PATCH 2/2] locking/percpu-rwsem: Introduce bias knob Oleg Nesterov <oleg@redhat.com> - 2016-07-15 15:30 +0200
        Re: [PATCH 2/2] locking/percpu-rwsem: Introduce bias knob "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-07-15 15:40 +0200
          Re: [PATCH 2/2] locking/percpu-rwsem: Introduce bias knob Oleg Nesterov <oleg@redhat.com> - 2016-07-15 15:50 +0200
            Re: [PATCH 2/2] locking/percpu-rwsem: Introduce bias knob "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-07-15 17:40 +0200
              Re: [PATCH 2/2] locking/percpu-rwsem: Introduce bias knob Oleg Nesterov <oleg@redhat.com> - 2016-07-15 18:50 +0200
                Re: [PATCH 2/2] locking/percpu-rwsem: Introduce bias knob "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-07-15 20:10 +0200
                [PATCH] rcu_sync: simplify the state machine, introduce  __rcu_sync_enter() Oleg Nesterov <oleg@redhat.com> - 2016-07-16 19:20 +0200
                Re: [PATCH] rcu_sync: simplify the state machine, introduce  __rcu_sync_enter() Oleg Nesterov <oleg@redhat.com> - 2016-07-16 20:50 +0200
                Re: [PATCH] rcu_sync: simplify the state machine, introduce  __rcu_sync_enter() Peter Zijlstra <peterz@infradead.org> - 2016-07-18 14:00 +0200
                Re: [PATCH] rcu_sync: simplify the state machine, introduce  __rcu_sync_enter() Oleg Nesterov <oleg@redhat.com> - 2016-07-18 15:50 +0200
                Re: [PATCH] rcu_sync: simplify the state machine, introduce  __rcu_sync_enter() "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-07-19 23:00 +0200
                Re: [PATCH] rcu_sync: simplify the state machine, introduce  __rcu_sync_enter() Oleg Nesterov <oleg@redhat.com> - 2016-07-20 17:20 +0200
                Re: [PATCH] rcu_sync: simplify the state machine, introduce  __rcu_sync_enter() "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-07-20 23:00 +0200
                Re: [PATCH] rcu_sync: simplify the state machine, introduce  __rcu_sync_enter() Oleg Nesterov <oleg@redhat.com> - 2016-07-21 19:40 +0200
                Re: [PATCH] rcu_sync: simplify the state machine, introduce  __rcu_sync_enter() Oleg Nesterov <oleg@redhat.com> - 2016-07-20 19:20 +0200
                Re: [PATCH] rcu_sync: simplify the state machine, introduce  __rcu_sync_enter() "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-07-20 23:40 +0200
                Re: [PATCH] rcu_sync: simplify the state machine, introduce  __rcu_sync_enter() Oleg Nesterov <oleg@redhat.com> - 2016-07-21 19:40 +0200
                Re: [PATCH] rcu_sync: simplify the state machine, introduce  __rcu_sync_enter() "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-07-22 05:30 +0200
                Re: [PATCH] rcu_sync: simplify the state machine, introduce __rcu_sync_enter() John Stultz <john.stultz@linaro.org> - 2016-07-25 19:10 +0200
                Re: [PATCH] rcu_sync: simplify the state machine, introduce  __rcu_sync_enter() Oleg Nesterov <oleg@redhat.com> - 2016-07-25 19:30 +0200
                Re: [PATCH] rcu_sync: simplify the state machine, introduce  __rcu_sync_enter() Oleg Nesterov <oleg@redhat.com> - 2016-07-25 19:10 +0200
                Re: [PATCH] rcu_sync: simplify the state machine, introduce  __rcu_sync_enter() "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-07-25 19:50 +0200
      Re: [PATCH 2/2] locking/percpu-rwsem: Introduce bias knob Oleg Nesterov <oleg@redhat.com> - 2016-07-15 15:50 +0200

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