[PATCH] lightweight robust futexes: compat

32-bit syscall compatibility support.  (This patch also moves all futex
related compat functionality into kernel/futex_compat.c.)

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Acked-by: Ulrich Drepper <drepper@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 0 insertions, 23 deletions

diff --git a/kernel/compat.c b/kernel/compat.c
index b9bdd1271f44..c1601a84f8d8 100644
--- a/kernel/compat.c
+++ b/kernel/compat.c
@@ -17,7 +17,6 @@
 #include <linux/time.h>
 #include <linux/signal.h>
 #include <linux/sched.h>        /* for MAX_SCHEDULE_TIMEOUT */
-#include <linux/futex.h>        /* for FUTEX_WAIT */
 #include <linux/syscalls.h>
 #include <linux/unistd.h>
 #include <linux/security.h>
@@ -239,28 +238,6 @@ asmlinkage long compat_sys_sigprocmask(int how, compat_old_sigset_t __user *set,
         return ret;
 }
 
-#ifdef CONFIG_FUTEX
-asmlinkage long compat_sys_futex(u32 __user *uaddr, int op, int val,
-                struct compat_timespec __user *utime, u32 __user *uaddr2,
-                int val3)
-{
-        struct timespec t;
-        unsigned long timeout = MAX_SCHEDULE_TIMEOUT;
-        int val2 = 0;
-
-        if ((op == FUTEX_WAIT) && utime) {
-                if (get_compat_timespec(&t, utime))
-                        return -EFAULT;
-                timeout = timespec_to_jiffies(&t) + 1;
-        }
-        if (op >= FUTEX_REQUEUE)
-                val2 = (int) (unsigned long) utime;
-
-        return do_futex((unsigned long)uaddr, op, val, timeout,
-                        (unsigned long)uaddr2, val2, val3);
-}
-#endif
-
 asmlinkage long compat_sys_setrlimit(unsigned int resource,
                 struct compat_rlimit __user *rlim)
 {