diff options
| author | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2021-03-26 16:29:32 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2021-03-29 15:57:02 +0200 |
| commit | 6d41c675a5394057f6fb1dc97cc0a0e360f2c2f8 (patch) | |
| tree | 95fa0eca643d79adabe7957638c32d271b3fdeca /kernel/locking/rtmutex-debug.h | |
| parent | 2d445c3e4a8216cfa9703998124c13250cc13e5e (diff) | |
locking/rtmutex: Remove output from deadlock detector
The rtmutex specific deadlock detector predates lockdep coverage of rtmutex
and since commit f5694788ad8da ("rt_mutex: Add lockdep annotations") it
contains a lot of redundant functionality:
- lockdep will detect an potential deadlock before rtmutex-debug
has a chance to do so
- the deadlock debugging is restricted to rtmutexes which are not
associated to futexes and have an active waiter, which is covered by
lockdep already
Remove the redundant functionality and move actual deadlock WARN() into the
deadlock code path. The latter needs a seperate cleanup.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20210326153943.320398604@linutronix.de
Diffstat (limited to 'kernel/locking/rtmutex-debug.h')
| -rw-r--r-- | kernel/locking/rtmutex-debug.h | 9 |
1 files changed, 0 insertions, 9 deletions
diff --git a/kernel/locking/rtmutex-debug.h b/kernel/locking/rtmutex-debug.h index 772c9b012b62..659e93e256c6 100644 --- a/kernel/locking/rtmutex-debug.h +++ b/kernel/locking/rtmutex-debug.h @@ -18,18 +18,9 @@ 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); extern void debug_rt_mutex_proxy_unlock(struct rt_mutex *lock); -extern void debug_rt_mutex_deadlock(enum rtmutex_chainwalk chwalk, - struct rt_mutex_waiter *waiter, - struct rt_mutex *lock); -extern void debug_rt_mutex_print_deadlock(struct rt_mutex_waiter *waiter); static inline bool debug_rt_mutex_detect_deadlock(struct rt_mutex_waiter *waiter, enum rtmutex_chainwalk walk) { return (waiter != NULL); } - -static inline void rt_mutex_print_deadlock(struct rt_mutex_waiter *w) -{ - debug_rt_mutex_print_deadlock(w); -} |