linux-kernel - [PATCH] modpost: Ignore ARC specific non-alloc sections

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Message-ID: <1356605240-4555-2-git-send-email-vgupta@synopsys.com>
Date:	Thu, 27 Dec 2012 16:17:20 +0530
From:	Vineet Gupta <Vineet.Gupta1@...opsys.com>
To:	Michal Marek <mmarek@...e.cz>,
	Rusty Russell <rusty@...tcorp.com.au>
CC:	Tony Lindgren <tony@...mide.com>, <linux-kernel@...r.kernel.org>,
	<linux-arch@...r.kernel.org>,
	Vineet Gupta <Vineet.Gupta1@...opsys.com>
Subject: [PATCH] modpost: Ignore ARC specific non-alloc sections

ARC relocatable object files contain one/more .gnu.linkonce.arcextmap.*
sections (collated by kernel/vmlinux.lds into .arcextmap in final link).
This section is used by debuggers to display the extension instructions
and need-not be loaded by target (hence !SHF_ALLOC)

The final kernel binary only needs .arcextmap entry in modpost's ignore
list (section_white_list[]). However when building modules, modpost scans
each object file individually, hence tripping on non-aggregated
.gnu.linkonce.arcextmap.* entries as well.

Thus need for the 2 entires !

Signed-off-by: Vineet Gupta <vgupta@...opsys.com>
---
 scripts/mod/modpost.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 0d93856..f6f1030 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -830,6 +830,8 @@ static const char *section_white_list[] =
 	".toc*",
 	".xt.prop",				 /* xtensa */
 	".xt.lit",         /* xtensa */
+	".arcextmap*",			/* arc */
+	".gnu.linkonce.arcext*",	/* arc : modules */
 	NULL
 };

-- 
1.7.4.1

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