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| author | Ingo Molnar <mingo@elte.hu> | 2006-06-27 02:54:55 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-27 17:32:47 -0700 |
| commit | e7eebaf6a81b956c989f184ee4b27277c88f8afe (patch) | |
| tree | 25adcfb17ec5f857791557a874cc1cced390ca9f /kernel/rtmutex-debug.h | |
| parent | a6537be9324c67b41f6d98f5a60a1bd5a8e02861 (diff) | |
| download | lwn-e7eebaf6a81b956c989f184ee4b27277c88f8afe.tar.gz lwn-e7eebaf6a81b956c989f184ee4b27277c88f8afe.zip | |
[PATCH] pi-futex: rt mutex debug
Runtime debugging functionality for rt-mutexes.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'kernel/rtmutex-debug.h')
| -rw-r--r-- | kernel/rtmutex-debug.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/kernel/rtmutex-debug.h b/kernel/rtmutex-debug.h new file mode 100644 index 000000000000..7612fbc62d70 --- /dev/null +++ b/kernel/rtmutex-debug.h @@ -0,0 +1,37 @@ +/* + * RT-Mutexes: blocking mutual exclusion locks with PI support + * + * started by Ingo Molnar and Thomas Gleixner: + * + * Copyright (C) 2004-2006 Red Hat, Inc., Ingo Molnar <mingo@redhat.com> + * Copyright (C) 2006, Timesys Corp., Thomas Gleixner <tglx@timesys.com> + * + * This file contains macros used solely by rtmutex.c. Debug version. + */ + +#define __IP_DECL__ , unsigned long ip +#define __IP__ , ip +#define __RET_IP__ , (unsigned long)__builtin_return_address(0) + +extern void +rt_mutex_deadlock_account_lock(struct rt_mutex *lock, struct task_struct *task); +extern void rt_mutex_deadlock_account_unlock(struct task_struct *task); +extern void debug_rt_mutex_init_waiter(struct rt_mutex_waiter *waiter); +extern void debug_rt_mutex_free_waiter(struct rt_mutex_waiter *waiter); +extern void debug_rt_mutex_init(struct rt_mutex *lock, const char *name); +extern void debug_rt_mutex_lock(struct rt_mutex *lock __IP_DECL__); +extern void debug_rt_mutex_unlock(struct rt_mutex *lock); +extern void debug_rt_mutex_proxy_lock(struct rt_mutex *lock, + struct task_struct *powner __IP_DECL__); +extern void debug_rt_mutex_proxy_unlock(struct rt_mutex *lock); +extern void debug_rt_mutex_deadlock(int detect, struct rt_mutex_waiter *waiter, + struct rt_mutex *lock); +extern void debug_rt_mutex_print_deadlock(struct rt_mutex_waiter *waiter); +# define debug_rt_mutex_reset_waiter(w) \ + do { (w)->deadlock_lock = NULL; } while (0) + +static inline int debug_rt_mutex_detect_deadlock(struct rt_mutex_waiter *waiter, + int detect) +{ + return (waiter != NULL); +} |