On Wed, Apr 24, 2013 at 08:48:13AM +0200, Ingo Molnar wrote:
> These patterns repeated in 4 places really call for a common helper
> defined as print_lockdep_off(fmt...) or so?
>
> (Can be a followup patch if that's easier for you.)
Given there was only one case which was really different, I opted not
to bother with varargs, and just pass the one string that changes
and add an extra printk for that special case (MAX_LOCK_DEPTH)
--
Consolidate the lockdep "too low" messages into one function.
Also add some missing printk levels.
Signed-off-by: Dave Jones <da...@redhat.com>
diff --git a/kernel/lockdep.c b/kernel/lockdep.c
index e4c001f..be52e6d 100644
--- a/kernel/lockdep.c
+++ b/kernel/lockdep.c
@@ -380,6 +380,13 @@ static int verbose(struct lock_class *class)
unsigned long nr_stack_trace_entries;
static unsigned long stack_trace[MAX_STACK_TRACE_ENTRIES];
+static void print_lockdep_off(const char *which)
+{
+ printk(KERN_DEBUG "BUG: %s too low!\n", which);
+ printk(KERN_DEBUG "turning off the locking correctness validator.\n");
+ printk(KERN_DEBUG "Attach output of /proc/lock_stat to bug report\n");
+}
+
static int save_trace(struct stack_trace *trace)
{
trace->nr_entries = 0;
@@ -409,9 +416,7 @@ static int save_trace(struct stack_trace *trace)
if (!debug_locks_off_graph_unlock())
return 0;
- printk("BUG: MAX_STACK_TRACE_ENTRIES too low!\n");
- printk("turning off the locking correctness validator.\n");
- printk("Attach output of /proc/lock_stat to bug report\n");
+ print_lockdep_off("MAX_STACK_TRACE_ENTRIES");
dump_stack();
return 0;
@@ -777,9 +782,7 @@ register_lock_class(struct lockdep_map *lock, unsigned int
subclass, int force)
}
raw_local_irq_restore(flags);
- printk("BUG: MAX_LOCKDEP_KEYS too low!\n");
- printk("turning off the locking correctness validator.\n");
- printk("Attach output of /proc/lock_stat to bug report\n");
+ print_lockdep_off("MAX_LOCKDEP_KEYS");
dump_stack();
return NULL;
}
@@ -849,9 +852,7 @@ static struct lock_list *alloc_list_entry(void)
if (!debug_locks_off_graph_unlock())
return NULL;
- printk("BUG: MAX_LOCKDEP_ENTRIES too low!\n");
- printk("turning off the locking correctness validator.\n");
- printk("Attach output of /proc/lock_stat to bug report\n");
+ print_lockdep_off("MAX_LOCKDEP_ENTRIES");
dump_stack();
return NULL;
}
@@ -2064,9 +2065,7 @@ cache_hit:
if (!debug_locks_off_graph_unlock())
return 0;
- printk("BUG: MAX_LOCKDEP_CHAINS too low!\n");
- printk("turning off the locking correctness validator.\n");
- printk("Attach output of /proc/lock_stat to bug report\n");
+ print_lockdep_off("MAX_LOCKDEP_CHAINS");
dump_stack();
return 0;
}
@@ -3208,10 +3207,9 @@ static int __lock_acquire(struct lockdep_map *lock,
unsigned int subclass,
#endif
if (unlikely(curr->lockdep_depth >= MAX_LOCK_DEPTH)) {
debug_locks_off();
- printk("BUG: MAX_LOCK_DEPTH too low, depth: %i max: %lu!\n",
+ print_lockdep_off("MAX_LOCK_DEPTH");
+ printk(KERN_DEBUG "depth: %i max: %lu!\n",
curr->lockdep_depth, MAX_LOCK_DEPTH);
- printk("turning off the locking correctness validator.\n");
- printk("Attach output of /proc/lock_stat to bug report\n");
lockdep_print_held_locks(current);
debug_show_all_locks();
--
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