From c87e2837be82df479a6bae9f155c43516d2feebc Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Tue, 27 Jun 2006 02:54:58 -0700 Subject: [PATCH] pi-futex: futex_lock_pi/futex_unlock_pi support This adds the actual pi-futex implementation, based on rt-mutexes. [dino@in.ibm.com: fix an oops-causing race] Signed-off-by: Ingo Molnar Signed-off-by: Thomas Gleixner Signed-off-by: Arjan van de Ven Signed-off-by: Dinakar Guniguntala Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/futex_compat.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) (limited to 'kernel/futex_compat.c') diff --git a/kernel/futex_compat.c b/kernel/futex_compat.c index 7e57c31670a3..d1d92b441fb7 100644 --- a/kernel/futex_compat.c +++ b/kernel/futex_compat.c @@ -129,14 +129,19 @@ asmlinkage long compat_sys_futex(u32 __user *uaddr, int op, u32 val, unsigned long timeout = MAX_SCHEDULE_TIMEOUT; int val2 = 0; - if (utime && (op == FUTEX_WAIT)) { + if (utime && (op == FUTEX_WAIT || op == FUTEX_LOCK_PI)) { if (get_compat_timespec(&t, utime)) return -EFAULT; if (!timespec_valid(&t)) return -EINVAL; - timeout = timespec_to_jiffies(&t) + 1; + if (op == FUTEX_WAIT) + timeout = timespec_to_jiffies(&t) + 1; + else { + timeout = t.tv_sec; + val2 = t.tv_nsec; + } } - if (op >= FUTEX_REQUEUE) + if (op == FUTEX_REQUEUE || op == FUTEX_CMP_REQUEUE) val2 = (int) (unsigned long) utime; return do_futex(uaddr, op, val, timeout, uaddr2, val2, val3); -- cgit v1.2.3-58-ga151