From: Rusty Russell <rusty@rustcorp.com.au>
To: Jeff Arnold <jbarnold@mit.edu>
Cc: Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org,
Denys Vlasenko <vda.linux@googlemail.com>,
Tim Abbott <tabbott@mit.edu>, Anders Kaseorg <andersk@mit.edu>,
Waseem Daher <wdaher@mit.edu>,
Nikanth Karthikesan <knikanth@suse.de>
Subject: Re: [PATCH 2/7] x86: Add an option to compile with -ffunction-sections -fdata-sections
Date: Wed, 4 Feb 2009 19:08:41 +1030 [thread overview]
Message-ID: <200902041908.42173.rusty@rustcorp.com.au> (raw)
In-Reply-To: <1228521840-3886-3-git-send-email-jbarnold@mit.edu>
On Saturday 06 December 2008 10:33:55 Jeff Arnold wrote:
> From: Waseem Daher <wdaher@mit.edu>
>
> This patch makes it possible to link and boot an x86 kernel with
> -ffunction-sections and -fdata-sections enabled.
Nice:
text data bss dec hex filename
3575210 361820 319488 4256518 40f306 vmlinux-with-sections
3579626 364892 323584 4268102 412046 vmlinux-no-sections
> +config FUNCTION_DATA_SECTIONS
> + bool "Compile with -ffunction-sections -fdata-sections"
> + depends on !FTRACE
> + help
> + If you say Y here the compiler will give each function
> + and data structure its own ELF section.
You need to make this depend on X86, otherwise allmodconfig will turn it on
and break other archs.
What's the conflict with FTRACE?
Thanks,
Rusty.
next prev parent reply other threads:[~2009-02-04 8:38 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-12-06 0:03 [PATCH 0/7] Ksplice: Rebootless kernel updates Jeff Arnold
2008-12-06 0:03 ` [PATCH 1/7] Make section names compatible with -ffunction-sections -fdata-sections Jeff Arnold
2008-12-06 0:03 ` [PATCH 2/7] x86: Add an option to compile " Jeff Arnold
2008-12-06 0:03 ` [PATCH 3/7] Ksplice: Make find_symbol return a struct kernel_symbol Jeff Arnold
2008-12-06 0:03 ` [PATCH 4/7] Ksplice: Add module_data_address (the analogue of module_text_address) Jeff Arnold
2008-12-06 0:03 ` [PATCH 5/7] Ksplice: Add functions for walking kallsyms symbols Jeff Arnold
2008-12-06 0:03 ` [PATCH 6/7] Ksplice: Export symbols needed for Ksplice Jeff Arnold
2008-12-06 0:04 ` [PATCH 7/7] Ksplice: Support updating x86-32 and x86-64 Jeff Arnold
2008-12-17 5:41 ` Theodore Tso
2008-12-18 2:09 ` Tim Abbott
2009-02-07 2:36 ` Rusty Russell
2009-02-10 1:01 ` Tim Abbott
2009-02-04 11:35 ` [PATCH 6/7] Ksplice: Export symbols needed for Ksplice Rusty Russell
2009-02-13 1:46 ` Tim Abbott
2009-02-16 7:11 ` Rusty Russell
2009-02-04 11:30 ` [PATCH 5/7] Ksplice: Add functions for walking kallsyms symbols Rusty Russell
2009-02-04 21:31 ` Anders Kaseorg
2009-02-04 11:21 ` [PATCH 4/7] Ksplice: Add module_data_address (the analogue of module_text_address) Rusty Russell
2009-02-04 20:48 ` Anders Kaseorg
2009-02-07 12:45 ` Rusty Russell
2009-02-04 9:26 ` [PATCH 3/7] Ksplice: Make find_symbol return a struct kernel_symbol Rusty Russell
2009-02-04 8:38 ` Rusty Russell [this message]
2009-02-04 10:26 ` [PATCH 2/7] x86: Add an option to compile with -ffunction-sections -fdata-sections Anders Kaseorg
2009-02-04 10:58 ` Rusty Russell
2009-02-04 20:50 ` Anders Kaseorg
2008-12-06 8:46 ` [PATCH 1/7] Make section names compatible " Andi Kleen
2008-12-31 19:18 ` Tim Abbott
2008-12-31 19:52 ` Andi Kleen
2008-12-31 21:59 ` Tim Abbott
2009-01-01 16:32 ` Andrew Morton
2009-01-04 19:20 ` Tim Abbott
2009-01-12 21:51 ` Andrew Morton
2009-01-12 22:11 ` Andi Kleen
2009-02-04 8:15 ` Rusty Russell
2009-02-05 1:11 ` Anders Kaseorg
2009-02-05 2:00 ` Anders Kaseorg
2008-12-17 2:48 ` [PATCH 0/7] Ksplice: Rebootless kernel updates Tim Abbott
2008-12-17 3:07 ` Andrew Morton
2008-12-17 3:53 ` Dave Jones
2008-12-17 17:19 ` Jeff Arnold
2008-12-17 5:05 ` Tim Abbott
2008-12-17 12:09 ` Ben Collins
2008-12-17 12:06 ` Ben Collins
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