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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2009-02-14 16:59:04 +0100
committerIngo Molnar <mingo@elte.hu>2009-02-14 23:28:28 +0100
commit9833f8cb952b9aa3f98a71e7bef8820cee3261a0 (patch)
tree9f88133ebedc6737cb41f43400088a2c6b1f2310
parentb4b136f44b3b7adb9265fd5566d0ea9b99b1cd5f (diff)
downloadop-kernel-dev-9833f8cb952b9aa3f98a71e7bef8820cee3261a0.zip
op-kernel-dev-9833f8cb952b9aa3f98a71e7bef8820cee3261a0.tar.gz
lockstat: warn about disabled lock debugging
Avoid confusion and clearly state lock debugging got disabled. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
-rw-r--r--kernel/lockdep_proc.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/kernel/lockdep_proc.c b/kernel/lockdep_proc.c
index b51064c..d7135aa 100644
--- a/kernel/lockdep_proc.c
+++ b/kernel/lockdep_proc.c
@@ -601,6 +601,10 @@ static void seq_stats(struct seq_file *m, struct lock_stat_data *data)
static void seq_header(struct seq_file *m)
{
seq_printf(m, "lock_stat version 0.3\n");
+
+ if (unlikely(!debug_locks))
+ seq_printf(m, "*WARNING* lock debugging disabled!! - possibly due to a lockdep warning\n");
+
seq_line(m, '-', 0, 40 + 1 + 10 * (14 + 1));
seq_printf(m, "%40s %14s %14s %14s %14s %14s %14s %14s %14s "
"%14s %14s\n",
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