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Message-ID: <20080717145217.GA24496@Krystal>
Date: Thu, 17 Jul 2008 10:52:17 -0400
From: Mathieu Desnoyers <compudj@...stal.dyndns.org>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: Wenji Huang <wenji.huang@...cle.com>,
Roland McGrath <roland@...hat.com>,
Takashi Nishiie <t-nishiie@...css.fujitsu.com>,
ltt-dev@...ts.casi.polymtl.ca, systemtap@...rces.redhat.com,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Fix markers duplicate modpost entry (update)
When a kernel was rebuilt, the previous Module.markers was not cleared. It
caused markers with different format strings to appear as duplicates when a
markers was changed. This problem is present since scripts/mod/modpost.c started
to generate Module.markers,
commit b2e3e658b344c6bcfb8fb694100ab2f2b5b2edb0
It therefore applies to 2.6.25, 2.6.26 and linux-next.
I merely merged the patches from Roland, Wenji and Takashi here.
Credits to
Roland McGrath <roland@...hat.com>
Wenji Huang <wenji.huang@...cle.com>
and
Takashi Nishiie <t-nishiie@...css.fujitsu.com>
for providing the individual fixes.
- Changelog :
- Integrated Takashi's Makefile modification to clear Module.markers upon
make clean.
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>
CC: Roland McGrath <roland@...hat.com>
CC: Wenji Huang <wenji.huang@...cle.com>
CC: Takashi Nishiie <t-nishiie@...css.fujitsu.com>
CC: akpm@...ux-foundation.org
---
Makefile | 3 ++-
scripts/Makefile.modpost | 1 +
scripts/mod/modpost.c | 3 ++-
3 files changed, 5 insertions(+), 2 deletions(-)
Index: linux-2.6-lttng/scripts/Makefile.modpost
===================================================================
--- linux-2.6-lttng.orig/scripts/Makefile.modpost 2008-07-17 02:47:44.000000000 -0400
+++ linux-2.6-lttng/scripts/Makefile.modpost 2008-07-17 02:48:17.000000000 -0400
@@ -101,6 +101,7 @@ quiet_cmd_kernel-mod = MODPOST $@
cmd_kernel-mod = $(modpost) $@
vmlinux.o: FORCE
+ @rm -fr $(kernelmarkersfile)
$(call cmd,kernel-mod)
# Declare generated files as targets for modpost
Index: linux-2.6-lttng/scripts/mod/modpost.c
===================================================================
--- linux-2.6-lttng.orig/scripts/mod/modpost.c 2008-07-17 02:49:33.000000000 -0400
+++ linux-2.6-lttng/scripts/mod/modpost.c 2008-07-17 02:50:10.000000000 -0400
@@ -1992,7 +1992,8 @@ static void read_markers(const char *fna
mod->skip = 1;
}
- add_marker(mod, marker, fmt);
+ if (!mod->skip)
+ add_marker(mod, marker, fmt);
}
return;
fail:
Index: linux-2.6-lttng/Makefile
===================================================================
--- linux-2.6-lttng.orig/Makefile 2008-07-17 10:37:44.000000000 -0400
+++ linux-2.6-lttng/Makefile 2008-07-17 10:38:34.000000000 -0400
@@ -1133,7 +1133,8 @@ clean: archclean $(clean-dirs)
@find . $(RCS_FIND_IGNORE) \
\( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
-o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
- -o -name '*.symtypes' -o -name 'modules.order' \) \
+ -o -name '*.symtypes' -o -name 'modules.order' \
+ -o -name 'Module.markers' \) \
-type f -print | xargs rm -f
# mrproper - Delete all generated files, including .config
--
Mathieu Desnoyers
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68
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