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Date: Wed, 20 Jan 2016 09:40:35 -0500
From: Steven Rostedt <rostedt@goodmis.org>
To: Jeff Merkey <linux.mdb@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>, LKML <linux-kernel@vger.kernel.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        Andy Lutomirski <luto@amacapital.net>, Ingo Molnar <mingo@redhat.com>,
        "H. Peter Anvin" <hpa@zytor.com>, X86 ML <x86@kernel.org>,
        Peter Zijlstra <peterz@infradead.org>,
        Andy Lutomirski <luto@kernel.org>,
        Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>,
        Borislav Petkov <bp@alien8.de>, Jiri Olsa <jolsa@kernel.org>
Subject: Re: x86_64 Compiler Output Kernel Bloat v4.4
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On Tue, 19 Jan 2016 08:47:04 -0700
Jeff Merkey <linux.mdb@gmail.com> wrote:


> I'll check my CONFIG and see if there's a way to turn this off.
> vmlinux.o is at 385MB on my build -- about 20% of that is this NOP
> instruction for a trace program that in most cases is probably never
> used.  Oink ... Oink ... Oink ...
>

The bloat is well known and was a sacrifice for the feature. This
feature is optional. If you don't like it, simple disable all tracing.
Then you'll save a lot of kernel text.

-- Steve