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| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2011-11-14 13:13:49 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2011-12-06 08:16:47 +0100 |
| commit | df754e6af2f237a6c020c0daff55a1a609338e31 (patch) | |
| tree | 138bfed4fccbba3671473a6768c91a9c3b9b8e84 /kernel/panic.c | |
| parent | 7119a341f35b0a3ddcf426818267980057c770a1 (diff) | |
| download | linux-stable-df754e6af2f237a6c020c0daff55a1a609338e31.tar.gz linux-stable-df754e6af2f237a6c020c0daff55a1a609338e31.tar.bz2 linux-stable-df754e6af2f237a6c020c0daff55a1a609338e31.zip | |
lockdep, bug: Exclude TAINT_FIRMWARE_WORKAROUND from disabling lockdep
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>
Diffstat (limited to 'kernel/panic.c')
| -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 b26593604214..1b83fd80b569 100644 --- a/kernel/panic.c +++ b/kernel/panic.c @@ -240,8 +240,16 @@ 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); } |