Lines Matching refs:PI

2 Lightweight PI-futexes
7  - in the user-space fastpath a PI-enabled futex involves no kernel work
8    (or any other PI complexity) at all. No registration, no extra kernel
14  - the in-kernel PI implementation is streamlined around the mutex
23 The short reply: user-space PI helps achieving/improving determinism for
25 determinism and well-bound latencies. Even in the worst-case, PI will
66 Currently (without PI), if a high-prio and a low-prio task shares a lock
78 As mentioned before, the userspace fastpath of PI-enabled pthread
94 own TID into the futex value], and attaches a 'PI state' structure to
95 the futex-queue. The pi_state includes an rt-mutex, which is a PI-aware,
113 Note that under this approach, contrary to previous PI-futex approaches,
114 there is no prior 'registration' of a PI-futex. [which is not quite
117 Also, under this scheme, 'robustness' and 'PI' are two orthogonal
119 robust-futex, PI-futex, robust+PI-futex.