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| author | David S. Miller <davem@davemloft.net> | 2013-02-21 15:20:27 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-02-21 15:20:27 -0800 |
| commit | 2b7ae1b27f011919dbd6e87bc76c6f76b66ab186 (patch) | |
| tree | 76ece3be32b84535392032136826aec7753c323b | |
| parent | 2366713d874342c94f9362b0d6b2461e1c68dbc3 (diff) | |
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Add priority inheritance futex support on sparc.
* sysdeps/unix/sysv/linux/sparc/lowlevellock.h
(FUTEX_WAIT_REQUEUE_PI): Define.
(FUTEX_CMP_REQUEUE_PI): Likewise.
(lll_futex_wait_requeue_pi): Likewise.
(lll_futex_timed_wait_requeue_pi): Likewise.
(lll_futex_cmp_requeue_pi): Likewise.
| -rw-r--r-- | nptl/ChangeLog | 9 | ||||
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/sparc/lowlevellock.h | 30 |
2 files changed, 39 insertions, 0 deletions
diff --git a/nptl/ChangeLog b/nptl/ChangeLog index 5f591b0487..2a676085ad 100644 --- a/nptl/ChangeLog +++ b/nptl/ChangeLog @@ -1,3 +1,12 @@ +2013-02-21 David S. Miller <davem@davemloft.net> + + * sysdeps/unix/sysv/linux/sparc/lowlevellock.h + (FUTEX_WAIT_REQUEUE_PI): Define. + (FUTEX_CMP_REQUEUE_PI): Likewise. + (lll_futex_wait_requeue_pi): Likewise. + (lll_futex_timed_wait_requeue_pi): Likewise. + (lll_futex_cmp_requeue_pi): Likewise. + 2013-02-21 Carlos O'Donell <carlos@redhat.com> * sysdeps/unix/sysv/linux/fork.c: Fix comment typo. diff --git a/nptl/sysdeps/unix/sysv/linux/sparc/lowlevellock.h b/nptl/sysdeps/unix/sysv/linux/sparc/lowlevellock.h index c88ec16434..2d7d9f82f6 100644 --- a/nptl/sysdeps/unix/sysv/linux/sparc/lowlevellock.h +++ b/nptl/sysdeps/unix/sysv/linux/sparc/lowlevellock.h @@ -37,6 +37,8 @@ #define FUTEX_TRYLOCK_PI 8 #define FUTEX_WAIT_BITSET 9 #define FUTEX_WAKE_BITSET 10 +#define FUTEX_WAIT_REQUEUE_PI 11 +#define FUTEX_CMP_REQUEUE_PI 12 #define FUTEX_PRIVATE_FLAG 128 #define FUTEX_CLOCK_REALTIME 256 @@ -157,6 +159,34 @@ extern void __cpu_relax (void); }) #endif +/* Priority Inheritance support. */ +#define lll_futex_wait_requeue_pi(futexp, val, mutex, private) \ + lll_futex_timed_wait_requeue_pi (futexp, val, NULL, 0, mutex, private) + +#define lll_futex_timed_wait_requeue_pi(futexp, val, timespec, clockbit, \ + mutex, private) \ + ({ \ + INTERNAL_SYSCALL_DECL (__err); \ + long int __ret; \ + int __op = FUTEX_WAIT_REQUEUE_PI | clockbit; \ + \ + __ret = INTERNAL_SYSCALL (futex, __err, 5, (futexp), \ + __lll_private_flag (__op, private), \ + (val), (timespec), mutex); \ + INTERNAL_SYSCALL_ERROR_P (__ret, __err) ? -__ret : __ret; \ + }) + +#define lll_futex_cmp_requeue_pi(futexp, nr_wake, nr_move, mutex, val, priv) \ + ({ \ + INTERNAL_SYSCALL_DECL (__err); \ + long int __ret; \ + \ + __ret = INTERNAL_SYSCALL (futex, __err, 6, (futexp), \ + __lll_private_flag (FUTEX_CMP_REQUEUE_PI, priv),\ + (nr_wake), (nr_move), (mutex), (val)); \ + INTERNAL_SYSCALL_ERROR_P (__ret, __err); \ + }) + static inline int __attribute__ ((always_inline)) __lll_trylock (int *futex) |