These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / tools / perf / bench / futex.h

diff --git a/kernel/tools/perf/bench/futex.h b/kernel/tools/perf/bench/futex.h
index 7ed22ff..d44de9f 100644 (file)
--- a/kernel/tools/perf/bench/futex.h
+++ b/kernel/tools/perf/bench/futex.h
@@ -55,6 +55,26 @@ futex_wake(u_int32_t *uaddr, int nr_wake, int opflags)
        return futex(uaddr, FUTEX_WAKE, nr_wake, NULL, NULL, 0, opflags);
 }
 
+/**
+ * futex_lock_pi() - block on uaddr as a PI mutex
+ * @detect:    whether (1) or not (0) to perform deadlock detection
+ */
+static inline int
+futex_lock_pi(u_int32_t *uaddr, struct timespec *timeout, int detect,
+             int opflags)
+{
+       return futex(uaddr, FUTEX_LOCK_PI, detect, timeout, NULL, 0, opflags);
+}
+
+/**
+ * futex_unlock_pi() - release uaddr as a PI mutex, waking the top waiter
+ */
+static inline int
+futex_unlock_pi(u_int32_t *uaddr, int opflags)
+{
+       return futex(uaddr, FUTEX_UNLOCK_PI, 0, NULL, NULL, 0, opflags);
+}
+
 /**
 * futex_cmp_requeue() - requeue tasks from uaddr to uaddr2
 * @nr_wake:        wake up to this many tasks