Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1561055

Re: [RFC PATCH] membarrier: handle nohz_full with expedited thread registration

From "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Newsgroups linux.kernel
Subject Re: [RFC PATCH] membarrier: handle nohz_full with expedited thread registration
Date 2017-01-17 23:10 +0100
Message-ID <t0K70-4fM-19@gated-at.bofh.it> (permalink)
References <t0lBD-5ee-3@gated-at.bofh.it> <t0lV0-5Di-17@gated-at.bofh.it> <t0ozv-7pV-15@gated-at.bofh.it> <t0t69-1IC-7@gated-at.bofh.it>
Organization linux.* mail to news gateway

Show all headers | View raw

On Tue, Jan 17, 2017 at 04:55:22AM +0100, Frederic Weisbecker wrote:

[ . . . ]

> In fact due to the complexity involved, I have to ask first if we
> really need this feature.  Typically nohz_full workloads don't want to
> be disturbed at all, so do we have real and significant usecases of CPU
> isolation workloads that want to be concerned by this membarrier so much
> that they can tolerate some random IRQ?

I believe that we need to explore the options for implementing it and
to -at- -least- have a patch ready, even if that patch doesn't go
upstream immediately.

							Thanx, Paul

Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

[RFC PATCH] membarrier: handle nohz_full with expedited thread registration Mathieu Desnoyers <mathieu.desnoyers@efficios.com> - 2017-01-16 21:00 +0100
  Re: [RFC PATCH] membarrier: handle nohz_full with expedited thread registration Linus Torvalds <torvalds@linux-foundation.org> - 2017-01-16 21:20 +0100
    Re: [RFC PATCH] membarrier: handle nohz_full with expedited thread  registration Mathieu Desnoyers <mathieu.desnoyers@efficios.com> - 2017-01-17 00:10 +0100
      Re: [RFC PATCH] membarrier: handle nohz_full with expedited thread registration Linus Torvalds <torvalds@linux-foundation.org> - 2017-01-17 01:00 +0100
        Re: [RFC PATCH] membarrier: handle nohz_full with expedited thread  registration Mathieu Desnoyers <mathieu.desnoyers@efficios.com> - 2017-01-17 03:10 +0100
      Re: [RFC PATCH] membarrier: handle nohz_full with expedited thread  registration Frederic Weisbecker <fweisbec@gmail.com> - 2017-01-17 05:00 +0100
        Re: [RFC PATCH] membarrier: handle nohz_full with expedited thread  registration Mathieu Desnoyers <mathieu.desnoyers@efficios.com> - 2017-01-17 23:00 +0100
          Re: [RFC PATCH] membarrier: handle nohz_full with expedited thread  registration Steven Rostedt <rostedt@goodmis.org> - 2017-01-18 00:40 +0100
        Re: [RFC PATCH] membarrier: handle nohz_full with expedited thread  registration "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2017-01-17 23:10 +0100
          Re: [RFC PATCH] membarrier: handle nohz_full with expedited thread  registration Peter Zijlstra <peterz@infradead.org> - 2017-01-18 12:10 +0100
            Re: [RFC PATCH] membarrier: handle nohz_full with expedited thread registration Paul McKenney <paulmckrcu@gmail.com> - 2017-01-19 23:10 +0100

csiph-web