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Groups > linux.kernel > #1313265

Re: x86_64 Compiler Output Kernel Bloat v4.4

From Steven Rostedt <rostedt@goodmis.org>
Newsgroups linux.kernel
Subject Re: x86_64 Compiler Output Kernel Bloat v4.4
Date 2016-01-20 15:50 +0100
Message-ID <qT2f8-7Ty-23@gated-at.bofh.it> (permalink)
References <qSpx9-6kN-15@gated-at.bofh.it> <qSpQt-6uq-1@gated-at.bofh.it> <qSzd7-4Gm-5@gated-at.bofh.it> <qSGxY-1lu-15@gated-at.bofh.it> <qSGHF-1px-31@gated-at.bofh.it>
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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

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Thread

x86_64 Compiler Output Kernel Bloat v4.4 Jeff Merkey <linux.mdb@gmail.com> - 2016-01-18 22:30 +0100
  Re: x86_64 Compiler Output Kernel Bloat v4.4 Jeff Merkey <linux.mdb@gmail.com> - 2016-01-18 22:40 +0100
  Re: x86_64 Compiler Output Kernel Bloat v4.4 Jeff Merkey <linux.mdb@gmail.com> - 2016-01-18 22:50 +0100
    Re: x86_64 Compiler Output Kernel Bloat v4.4 Jeff Merkey <linux.mdb@gmail.com> - 2016-01-18 22:50 +0100
      Re: x86_64 Compiler Output Kernel Bloat v4.4 Mihai Donțu <mihai.dontu@gmail.com> - 2016-01-18 23:20 +0100
    Re: x86_64 Compiler Output Kernel Bloat v4.4 Jiri Olsa <jolsa@redhat.com> - 2016-01-19 08:50 +0100
      Re: x86_64 Compiler Output Kernel Bloat v4.4 Jeff Merkey <linux.mdb@gmail.com> - 2016-01-19 16:40 +0100
        Re: x86_64 Compiler Output Kernel Bloat v4.4 Jeff Merkey <linux.mdb@gmail.com> - 2016-01-19 16:50 +0100
          Re: x86_64 Compiler Output Kernel Bloat v4.4 Steven Rostedt <rostedt@goodmis.org> - 2016-01-20 15:50 +0100
            Re: x86_64 Compiler Output Kernel Bloat v4.4 "H. Peter Anvin" <hpa@zytor.com> - 2016-01-20 16:00 +0100

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