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.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.h')
| -rw-r--r-- | kernel/locking/rtmutex.h | 7 |
1 files changed, 0 insertions, 7 deletions
diff --git a/kernel/locking/rtmutex.h b/kernel/locking/rtmutex.h index 4dbdec15f1a0..d77cb8280aa6 100644 --- a/kernel/locking/rtmutex.h +++ b/kernel/locking/rtmutex.h @@ -18,13 +18,6 @@ #define debug_rt_mutex_proxy_unlock(l) do { } while (0) #define debug_rt_mutex_unlock(l) do { } while (0) #define debug_rt_mutex_init(m, n, k) do { } while (0) -#define debug_rt_mutex_deadlock(d, a ,l) do { } while (0) -#define debug_rt_mutex_print_deadlock(w) do { } while (0) - -static inline void rt_mutex_print_deadlock(struct rt_mutex_waiter *w) -{ - WARN(1, "rtmutex deadlock detected\n"); -} static inline bool debug_rt_mutex_detect_deadlock(struct rt_mutex_waiter *w, enum rtmutex_chainwalk walk) |