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[S390] lockdep: show held locks when showing a stackdump

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Follow i386/x86_64:
lockdep can be used to print held locks when printing a
backtrace. This can be useful when debugging things like
'scheduling while atomic' asserts.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Heiko Carstens 2006-12-04 15:40:47 +01:00 committed by Martin Schwidefsky
parent 59f35d53fd
commit 236257eee9
1 changed files with 4 additions and 1 deletions
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5
arch/s390/kernel/traps.c
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@ -129,7 +129,7 @@ __show_trace(unsigned long sp, unsigned long low, unsigned long high)
}
}
void show_trace(struct task_struct *task, unsigned long * stack)
void show_trace(struct task_struct *task, unsigned long *stack)
{
register unsigned long __r15 asm ("15");
unsigned long sp;
@ -151,6 +151,9 @@ void show_trace(struct task_struct *task, unsigned long * stack)
__show_trace(sp, S390_lowcore.thread_info,
S390_lowcore.thread_info + THREAD_SIZE);
printk("\n");
if (!task)
task = current;
debug_show_held_locks(task);
}
void show_stack(struct task_struct *task, unsigned long *sp)