diff options
| -rw-r--r-- | include/trace/events/lock.h | 10 | ||||
| -rw-r--r-- | kernel/locking/mutex.c | 4 |
2 files changed, 12 insertions, 2 deletions
diff --git a/include/trace/events/lock.h b/include/trace/events/lock.h index 1ded869cd619..b1d5b18c4514 100644 --- a/include/trace/events/lock.h +++ b/include/trace/events/lock.h @@ -137,7 +137,11 @@ TRACE_EVENT(contention_end, TP_printk("%p (ret=%d)", __entry->lock_addr, __entry->ret) ); -TRACE_EVENT(contended_release, +/* kernel/locking/mutex.c */ +int arch_contended_release_trace_reg(void); +void arch_contended_release_trace_unreg(void); + +TRACE_EVENT_FN(contended_release, TP_PROTO(void *lock), @@ -151,7 +155,9 @@ TRACE_EVENT(contended_release, __entry->lock_addr = lock; ), - TP_printk("%p", __entry->lock_addr) + TP_printk("%p", __entry->lock_addr), + + arch_contended_release_trace_reg, arch_contended_release_trace_unreg ); #endif /* _TRACE_LOCK_H */ diff --git a/kernel/locking/mutex.c b/kernel/locking/mutex.c index 8a85912d7ee6..942a939cee95 100644 --- a/kernel/locking/mutex.c +++ b/kernel/locking/mutex.c @@ -1272,6 +1272,10 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(contention_begin); EXPORT_TRACEPOINT_SYMBOL_GPL(contention_end); EXPORT_TRACEPOINT_SYMBOL_GPL(contended_release); +__weak int arch_contended_release_trace_reg(void) { return 0; } + +__weak void arch_contended_release_trace_unreg(void) { } + /** * atomic_dec_and_mutex_lock - return holding mutex if we dec to 0 * @cnt: the atomic which we are to dec |