diff options
| author | Ingo Molnar <mingo@elte.hu> | 2006-01-09 15:59:20 -0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@hera.kernel.org> | 2006-01-09 15:59:20 -0800 |
| commit | 408894ee4dd4debfdedd472eb4d8414892fc90f6 (patch) | |
| tree | b324c1086b804cc05c2839f9d9675eef2bc7c949 /include/linux | |
| parent | f3f54ffa703c6298240ffd69616451d645bae4d5 (diff) | |
[PATCH] mutex subsystem, debugging code
mutex implementation - add debugging code.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/mutex-debug.h | 21 | ||||
| -rw-r--r-- | include/linux/sched.h | 5 |
2 files changed, 26 insertions, 0 deletions
diff --git a/include/linux/mutex-debug.h b/include/linux/mutex-debug.h new file mode 100644 index 00000000000..0ccd8f983b5 --- /dev/null +++ b/include/linux/mutex-debug.h @@ -0,0 +1,21 @@ +#ifndef __LINUX_MUTEX_DEBUG_H +#define __LINUX_MUTEX_DEBUG_H + +/* + * Mutexes - debugging helpers: + */ + +#define __DEBUG_MUTEX_INITIALIZER(lockname) \ + , .held_list = LIST_HEAD_INIT(lockname.held_list), \ + .name = #lockname , .magic = &lockname + +#define mutex_init(sem) __mutex_init(sem, __FUNCTION__) + +extern void FASTCALL(mutex_destroy(struct mutex *lock)); + +extern void mutex_debug_show_all_locks(void); +extern void mutex_debug_show_held_locks(struct task_struct *filter); +extern void mutex_debug_check_no_locks_held(struct task_struct *task); +extern void mutex_debug_check_no_locks_freed(const void *from, const void *to); + +#endif diff --git a/include/linux/sched.h b/include/linux/sched.h index 78eb92ae4d9..85b53f87c70 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -817,6 +817,11 @@ struct task_struct { /* Protection of proc_dentry: nesting proc_lock, dcache_lock, write_lock_irq(&tasklist_lock); */ spinlock_t proc_lock; +#ifdef CONFIG_DEBUG_MUTEXES + /* mutex deadlock detection */ + struct mutex_waiter *blocked_on; +#endif + /* journalling filesystem info */ void *journal_info; |