linux-kernel - Re: [PATCH 3/3] x86/ftrace: Use text

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Message-ID: <20191021231630.49805757@oasis.local.home>
Date:   Mon, 21 Oct 2019 23:16:30 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Alexei Starovoitov <alexei.starovoitov@...il.com>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        Daniel Bristot de Oliveira <bristot@...hat.com>,
        LKML <linux-kernel@...r.kernel.org>, X86 ML <x86@...nel.org>,
        Nadav Amit <nadav.amit@...il.com>,
        Andy Lutomirski <luto@...nel.org>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Song Liu <songliubraving@...com>,
        Masami Hiramatsu <mhiramat@...nel.org>
Subject: Re: [PATCH 3/3] x86/ftrace: Use text_poke()

On Mon, 21 Oct 2019 20:10:09 -0700
Alexei Starovoitov <alexei.starovoitov@...il.com> wrote:

> On Mon, Oct 21, 2019 at 5:43 PM Steven Rostedt <rostedt@...dmis.org> wrote:
> >
> > On Mon, 21 Oct 2019 17:36:54 -0700
> > Alexei Starovoitov <alexei.starovoitov@...il.com> wrote:
> >
> >  
> > > What is the status of this set ?
> > > Steven, did you apply it ?  
> >
> > There's still bugs to figure out.  
> 
> what bugs you're seeing?
> The IPI frequency that was mentioned in this thread or something else?
> I'm hacking ftrace+bpf stuff in the same spot and would like to
> base my work on the latest and greatest.

There's real bugs (crashes), talked about in later versions of the
patch set:

 https://lore.kernel.org/r/20191009224135.2dcf7767@oasis.local.home

And there was another crash on Peter's latest I just reported:

 https://lore.kernel.org/r/20191021222110.49044eb5@oasis.local.home

-- Steve