Date: Tue, 8 Oct 2013 16:19:59 -0400
From: Steven Rostedt <rostedt@goodmis.org>
To: Ingo Molnar <mingo@kernel.org>
Cc: Dave Jones <davej@redhat.com>, David Ahern <dsahern@gmail.com>,
        Andi Kleen <andi@firstfloor.org>, x86@kernel.org,
        linux-kernel@vger.kernel.org, peterz@infradead.org,
        Andi Kleen <ak@linux.intel.com>, fweisbec@gmail.com
Subject: Re: [PATCH 6/6] x86: Allow disabling HW_BREAKPOINTS and PERF_EVENTS
Message-ID: <20131008201959.GC15214@home.goodmis.org>
References: <1380922788-23112-1-git-send-email-andi@firstfloor.org>
 <1380922788-23112-7-git-send-email-andi@firstfloor.org>
 <20131006164934.GA15167@gmail.com>
 <20131008065938.GA4333@gmail.com>
 <20131008155131.GA31975@redhat.com>
 <5254313F.4030409@gmail.com>
 <20131008162451.GA1848@redhat.com>
 <20131008193613.GA7315@gmail.com>
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On Tue, Oct 08, 2013 at 09:36:13PM +0200, Ingo Molnar wrote:
> 
> Peter is working on it - but it's slow. Could you try to disable 
> sys_perf_open, ptrace and the NMI watchdog? No perf functionality should 
> be used in that case. If you disable CONFIG_FTRACE then no ftrace 
> functionality should be used.
> 

Dave,

The ftrace oops you've been seeing is from the function tracer, you don't
need to disable all of ftrace, just CONFIG_FUNCTION_TRACER (and anything
that selects it: CONFIG_STACK_TRACER).

-- Steve

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