Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
Date:   Thu, 10 Oct 2019 09:14:03 -0400
From:   Steven Rostedt <rostedt@goodmis.org>
To:     Petr Mladek <pmladek@suse.com>
Cc:     jikos@kernel.org, Joe Lawrence <joe.lawrence@redhat.com>,
        jpoimboe@redhat.com, mingo@redhat.com,
        Miroslav Benes <mbenes@suse.cz>, linux-kernel@vger.kernel.org,
        live-patching@vger.kernel.org
Subject: Re: [PATCH 0/3] ftrace: Introduce PERMANENT ftrace_ops flag
Message-ID: <20191010091403.5ecf0fdb@gandalf.local.home>
In-Reply-To: <20191010085035.emsdks6xecazqc6k@pathway.suse.cz>
References: <20191007081714.20259-1-mbenes@suse.cz>
        <20191008193534.GA16675@redhat.com>
        <20191009112234.bi7lvp4pvmna26vz@pathway.suse.cz>
        <20191009102654.501ad7c3@gandalf.local.home>
        <20191010085035.emsdks6xecazqc6k@pathway.suse.cz>
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

On Thu, 10 Oct 2019 10:50:35 +0200
Petr Mladek <pmladek@suse.com> wrote:

> It will make the flag unusable for other ftrace users. But it
> will be already be the case when it can't be disabled.

Honestly, I hate that flag. Most people don't even know about it. It
was added in the beginning of ftrace as a way to stop function tracing
in the latency tracer. But that use case has been obsoleted by
328df4759c03e ("tracing: Add function-trace option to disable function
tracing of latency tracers"). I may just remove the damn thing and only
add it back if somebody complains about it.

-- Steve