lkml.org 
[lkml]   [2006]   [Nov]   [5]   [last100]   RSS Feed
Views: [more markup]  [less markup]  [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Subject[PATCH] lockdep: print current locks on in_atomic warnings
FromPeter Zijlstra <>
DateSun, 05 Nov 2006 21:36:19 +0100
Add debug_show_held_locks(current) to __might_sleep() and
schedule(); this makes finding the offending lock leak easier.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
---
 kernel/sched.c |    2 ++
 1 file changed, 2 insertions(+)
Index: linux-2.6-twins/kernel/sched.c
===================================================================
--- linux-2.6-twins.orig/kernel/sched.c	2006-11-05 21:04:13.000000000 +0100
+++ linux-2.6-twins/kernel/sched.c	2006-11-05 21:11:39.000000000 +0100
@@ -3333,6 +3333,7 @@ asmlinkage void __sched schedule(void)
 		printk(KERN_ERR "BUG: scheduling while atomic: "
 			"%s/0x%08x/%d\n",
 			current->comm, preempt_count(), current->pid);
+		debug_show_held_locks(current);
 		dump_stack();
 	}
 	profile_hit(SCHED_PROFILING, __builtin_return_address(0));
@@ -6867,6 +6868,7 @@ void __might_sleep(char *file, int line)
 				" context at %s:%d\n", file, line);
 		printk("in_atomic():%d, irqs_disabled():%d\n",
 			in_atomic(), irqs_disabled());
+		debug_show_held_locks(current);
 		dump_stack();
 	}
 #endif

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2006-11-05 20:39    [from the cache]
©2003-2008