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| author | Ingo Molnar <mingo@elte.hu> | 2006-06-27 02:54:58 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-27 17:32:47 -0700 |
| commit | c87e2837be82df479a6bae9f155c43516d2feebc (patch) | |
| tree | ad6ab35f0b78f71abaa7b05185e9e3f97809c6de /kernel/futex_compat.c | |
| parent | 0cdbee9920fb37eb2dc49b860c2b28862d647adc (diff) | |
| download | linux-c87e2837be82df479a6bae9f155c43516d2feebc.tar.gz linux-c87e2837be82df479a6bae9f155c43516d2feebc.tar.bz2 linux-c87e2837be82df479a6bae9f155c43516d2feebc.zip | |
[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 <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Dinakar Guniguntala <dino@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'kernel/futex_compat.c')
| -rw-r--r-- | kernel/futex_compat.c | 11 |
1 files changed, 8 insertions, 3 deletions
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); |