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| author | Andreas Gruenbacher <andreas.gruenbacher@gmail.com> | 2014-07-15 21:10:52 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2014-07-17 11:48:15 +0200 |
| commit | acf59377267b5a74818e76873d0670b0ca6cf2fe (patch) | |
| tree | e5a65e24338a165c5e99919e2d1d149d611f3be3 | |
| parent | b5e4111f027c4be85dbe97e090530d03c55c4cf4 (diff) | |
| download | linux-acf59377267b5a74818e76873d0670b0ca6cf2fe.tar.bz2 | |
locking/lockdep: Only ask for /proc/lock_stat output when available
When lockdep turns itself off, the following message is logged:
Please attach the output of /proc/lock_stat to the bug report
Omit this message when CONFIG_LOCK_STAT is off, and /proc/lock_stat
doesn't exist.
Signed-off-by: Andreas Gruenbacher <andreas.gruenbacher@gmail.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/1405451452-3824-1-git-send-email-andreas.gruenbacher@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
| -rw-r--r-- | kernel/locking/lockdep.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c index d24e4339b46d..88d0d4420ad2 100644 --- a/kernel/locking/lockdep.c +++ b/kernel/locking/lockdep.c @@ -384,7 +384,9 @@ static void print_lockdep_off(const char *bug_msg) { printk(KERN_DEBUG "%s\n", bug_msg); printk(KERN_DEBUG "turning off the locking correctness validator.\n"); +#ifdef CONFIG_LOCK_STAT printk(KERN_DEBUG "Please attach the output of /proc/lock_stat to the bug report\n"); +#endif } static int save_trace(struct stack_trace *trace) |