From: Petr Vandrovec <petr@vandrovec.name>
To: mingo@redhat.com
Cc: linux-kernel@vger.kernel.org
Subject: [PATCH] Add note that lockdep is not allowed with non-GPL modules
Date: Tue, 4 Jul 2006 22:29:04 +0200 [thread overview]
Message-ID: <20060704202904.GA24150@vana.vc.cvut.cz> (raw)
Hi Ingo,
can you add this small notice to the lockdep option ?
Lock dependency infrastructure forces all legacy code which uses lock to now
depend on lockdep_init_map symbol, which is GPL-only. It means that almost
no modules can work on kernel with CONFIG_LOCKDEP set. Let's warn user about
that.
vmmon: module license 'unspecified' taints kernel.
vmmon: Unknown symbol lockdep_init_map
Thanks,
Petr Vandrovec
Signed-off-by: Petr Vandrovec <petr@vandrovec.name>
--- linux-2.6.17-3130.dist/lib/Kconfig.debug 2006-07-04 19:31:36.000000000 +0200
+++ linux-2.6.17-3130/lib/Kconfig.debug 2006-07-04 21:55:35.000000000 +0200
@@ -214,6 +214,9 @@
For more details, see Documentation/lockdep-design.txt.
+ Do not enable this option if you are using non-GPL modules, or
+ they will fail to load due to missing symbol lockdep_init_map.
+
config LOCKDEP
bool
depends on TRACE_IRQFLAGS_SUPPORT && STACKTRACE_SUPPORT && LOCKDEP_SUPPORT
next reply other threads:[~2006-07-04 20:29 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-07-04 20:29 Petr Vandrovec [this message]
2006-07-04 20:53 ` Alexey Dobriyan
2006-07-04 21:20 ` Petr Vandrovec
2006-07-05 2:47 ` Valdis.Kletnieks
2006-07-05 2:54 ` Petr Vandrovec
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