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From: Alexei Starovoitov <alexei.starovoitov@gmail.com>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: Peter Zijlstra <peterz@infradead.org>,
	Daniel Bristot de Oliveira <bristot@redhat.com>,
	LKML <linux-kernel@vger.kernel.org>, X86 ML <x86@kernel.org>,
	Nadav Amit <nadav.amit@gmail.com>,
	Andy Lutomirski <luto@kernel.org>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	Song Liu <songliubraving@fb.com>,
	Masami Hiramatsu <mhiramat@kernel.org>
Subject: Re: [PATCH 3/3] x86/ftrace: Use text_poke()
Date: Mon, 21 Oct 2019 17:36:54 -0700	[thread overview]
Message-ID: <CAADnVQJ0cWYPY-+FhZoqUZ8p1k1FiDsO5jhXiQdcCPmd1UeCyQ@mail.gmail.com> (raw)
In-Reply-To: <20191004094228.5a5774fe@gandalf.local.home>

On Fri, Oct 4, 2019 at 6:45 AM Steven Rostedt <rostedt@goodmis.org> wrote:
>
> On Fri, 4 Oct 2019 13:22:37 +0200
> Peter Zijlstra <peterz@infradead.org> wrote:
>
> > On Thu, Oct 03, 2019 at 06:10:45PM -0400, Steven Rostedt wrote:
> > > But still, we are going from 120 to 660 IPIs for every CPU. Not saying
> > > it's a problem, but something that we should note. Someone (those that
> > > don't like kernel interference) may complain.
> >
> > It is machine wide function tracing, interference is going to happen..
> > :-)
> >
> > Anyway, we can grow the batch size if sufficient benefit can be shown to
> > exist.
>
> Yeah, I was thinking that we just go with these patches and then fix
> the IPI issue when someone starts complaining ;-)
>
> Anyway, is this series ready to go? I can pull them in (I guess I
> should get an ack from Thomas or Ingo as they are x86 specific). I'm
> currently working on code that affects the same code paths as this
> patch, and would like to build my changes on top of this, instead of
> monkeying around with major conflicts.

What is the status of this set ?
Steven, did you apply it ?

  reply	other threads:[~2019-10-22  0:37 UTC|newest]

Thread overview: 60+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-27 18:06 [PATCH 0/3] Rewrite x86/ftrace to use text_poke() Peter Zijlstra
2019-08-27 18:06 ` [PATCH 1/3] x86/alternatives: Teach text_poke_bp() to emulate instructions Peter Zijlstra
2019-10-03  5:00   ` Masami Hiramatsu
2019-10-03  8:27     ` Peter Zijlstra
2019-10-03 11:01       ` Peter Zijlstra
2019-10-03 12:32         ` Peter Zijlstra
2019-10-04 13:45         ` Masami Hiramatsu
2019-10-07  8:05           ` Peter Zijlstra
2019-10-09 13:07           ` x86/kprobes bug? (was: [PATCH 1/3] x86/alternatives: Teach text_poke_bp() to emulate instructions) Peter Zijlstra
2019-10-09 13:26             ` Peter Zijlstra
2019-10-09 13:28               ` Peter Zijlstra
2019-10-09 14:26             ` Mathieu Desnoyers
2019-10-17 19:59               ` Peter Zijlstra
2019-10-03 13:05       ` [PATCH 1/3] x86/alternatives: Teach text_poke_bp() to emulate instructions Peter Zijlstra
2019-08-27 18:06 ` [PATCH 2/3] x86/alternatives,jump_label: Provide better text_poke() batching interface Peter Zijlstra
2019-10-02 16:34   ` Daniel Bristot de Oliveira
2019-10-03  5:50   ` Masami Hiramatsu
2019-08-27 18:06 ` [PATCH 3/3] x86/ftrace: Use text_poke() Peter Zijlstra
2019-10-02 16:35   ` Daniel Bristot de Oliveira
2019-10-02 18:21     ` Peter Zijlstra
2019-10-03 22:10       ` Steven Rostedt
2019-10-04  8:10         ` Daniel Bristot de Oliveira
2019-10-04 13:40           ` Steven Rostedt
2019-10-04 14:44             ` Daniel Bristot de Oliveira
2019-10-04 15:13               ` Steven Rostedt
2019-10-07  8:08           ` Peter Zijlstra
2019-10-11  7:01           ` Peter Zijlstra
2019-10-11  7:37             ` Daniel Bristot de Oliveira
2019-10-11 10:57               ` Peter Zijlstra
2019-10-11 13:11               ` Steven Rostedt
2019-10-04 11:22         ` Peter Zijlstra
2019-10-04 13:42           ` Steven Rostedt
2019-10-22  0:36             ` Alexei Starovoitov [this message]
2019-10-22  0:43               ` Steven Rostedt
2019-10-22  3:10                 ` Alexei Starovoitov
2019-10-22  3:16                   ` Steven Rostedt
2019-10-22  3:19                     ` Steven Rostedt
2019-10-22  4:05                       ` Alexei Starovoitov
2019-10-22 11:19                         ` Steven Rostedt
2019-10-22 13:44                           ` Steven Rostedt
2019-10-22 17:50                             ` Alexei Starovoitov
2019-10-22 18:10                               ` Steven Rostedt
2019-10-22 20:46                                 ` Alexei Starovoitov
2019-10-22 21:04                                   ` Steven Rostedt
2019-10-22 21:58                                     ` Alexei Starovoitov
2019-10-22 22:17                                       ` Steven Rostedt
2019-10-23  2:02                                         ` Steven Rostedt
2019-10-22 22:45                                       ` Andy Lutomirski
2019-10-22 23:21                                         ` Steven Rostedt
2019-10-22 23:49                                         ` Alexei Starovoitov
2019-10-23  4:20                                           ` Andy Lutomirski
2019-10-23  9:02                                             ` Peter Zijlstra
2019-10-23 16:23                                       ` Steven Rostedt
2019-10-23 17:42                                         ` Steven Rostedt
2019-10-23 19:34                                         ` Alexei Starovoitov
2019-10-23 20:08                                           ` Steven Rostedt
2019-10-23 22:36                                             ` Alexei Starovoitov
2019-10-22  3:55                     ` Alexei Starovoitov
2019-10-03  5:52     ` Masami Hiramatsu
2019-08-28  7:22 ` [PATCH 0/3] Rewrite x86/ftrace to use text_poke() Song Liu

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