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authorIngo Molnar <mingo@elte.hu>2006-06-27 02:54:58 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-27 17:32:47 -0700
commitc87e2837be82df479a6bae9f155c43516d2feebc (patch)
treead6ab35f0b78f71abaa7b05185e9e3f97809c6de /include/linux/futex.h
parent0cdbee9920fb37eb2dc49b860c2b28862d647adc (diff)
downloadop-kernel-dev-c87e2837be82df479a6bae9f155c43516d2feebc.zip
op-kernel-dev-c87e2837be82df479a6bae9f155c43516d2feebc.tar.gz
[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 'include/linux/futex.h')
-rw-r--r--include/linux/futex.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/futex.h b/include/linux/futex.h
index f05a3f4..34c3a21 100644
--- a/include/linux/futex.h
+++ b/include/linux/futex.h
@@ -12,6 +12,9 @@
#define FUTEX_REQUEUE 3
#define FUTEX_CMP_REQUEUE 4
#define FUTEX_WAKE_OP 5
+#define FUTEX_LOCK_PI 6
+#define FUTEX_UNLOCK_PI 7
+#define FUTEX_TRYLOCK_PI 8
/*
* Support for robust futexes: the kernel cleans up held futexes at
@@ -97,10 +100,14 @@ extern int handle_futex_death(u32 __user *uaddr, struct task_struct *curr);
#ifdef CONFIG_FUTEX
extern void exit_robust_list(struct task_struct *curr);
+extern void exit_pi_state_list(struct task_struct *curr);
#else
static inline void exit_robust_list(struct task_struct *curr)
{
}
+static inline void exit_pi_state_list(struct task_struct *curr)
+{
+}
#endif
#define FUTEX_OP_SET 0 /* *(int *)UADDR2 = OPARG; */
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