diff options
| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2011-11-14 13:13:49 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-02-13 11:06:10 -0800 |
| commit | d378b2d044139f88384d278bd5830669c44c789b (patch) | |
| tree | 4798988a3ac3182f38dfa8b3b6459833a6f40596 /kernel | |
| parent | e02c339f506e10fadf8a5f00f1c932035596ed8e (diff) | |
lockdep, bug: Exclude TAINT_FIRMWARE_WORKAROUND from disabling lockdep
commit df754e6af2f237a6c020c0daff55a1a609338e31 upstream.
It's unlikely that TAINT_FIRMWARE_WORKAROUND causes false
lockdep messages, so do not disable lockdep in that case.
We still want to keep lockdep disabled in the
TAINT_OOT_MODULE case:
- bin-only modules can cause various instabilities in
their and in unrelated kernel code
- they are impossible to debug for kernel developers
- they also typically do not have the copyright license
permission to link to the GPL-ed lockdep code.
Suggested-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/n/tip-xopopjjens57r0i13qnyh2yo@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/panic.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/kernel/panic.c b/kernel/panic.c index 69231670eb95..8e48cf6ab56d 100644 --- a/kernel/panic.c +++ b/kernel/panic.c @@ -236,8 +236,16 @@ void add_taint(unsigned flag) * Also we want to keep up lockdep for staging development and * post-warning case. */ - if (flag != TAINT_CRAP && flag != TAINT_WARN && __debug_locks_off()) - printk(KERN_WARNING "Disabling lock debugging due to kernel taint\n"); + switch (flag) { + case TAINT_CRAP: + case TAINT_WARN: + case TAINT_FIRMWARE_WORKAROUND: + break; + + default: + if (__debug_locks_off()) + printk(KERN_WARNING "Disabling lock debugging due to kernel taint\n"); + } set_bit(flag, &tainted_mask); } |