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8d7718aa08
Change futex_atomic_op_inuser and futex_atomic_cmpxchg_inatomic prototypes to use u32 types for the futex as this is the data type the futex core code uses all over the place. Signed-off-by: Michel Lespinasse <walken@google.com> Cc: Darren Hart <darren@dvhart.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Matt Turner <mattst88@gmail.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: David Howells <dhowells@redhat.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Michal Simek <monstr@monstr.eu> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: "James E.J. Bottomley" <jejb@parisc-linux.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Chris Metcalf <cmetcalf@tilera.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> LKML-Reference: <20110311025058.GD26122@google.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
112 lines
1.8 KiB
C
112 lines
1.8 KiB
C
#ifndef __ASM_SH_FUTEX_IRQ_H
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#define __ASM_SH_FUTEX_IRQ_H
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#include <asm/system.h>
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static inline int atomic_futex_op_xchg_set(int oparg, u32 __user *uaddr,
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int *oldval)
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{
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unsigned long flags;
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int ret;
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local_irq_save(flags);
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ret = get_user(*oldval, uaddr);
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if (!ret)
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ret = put_user(oparg, uaddr);
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local_irq_restore(flags);
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return ret;
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}
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static inline int atomic_futex_op_xchg_add(int oparg, u32 __user *uaddr,
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int *oldval)
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{
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unsigned long flags;
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int ret;
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local_irq_save(flags);
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ret = get_user(*oldval, uaddr);
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if (!ret)
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ret = put_user(*oldval + oparg, uaddr);
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local_irq_restore(flags);
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return ret;
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}
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static inline int atomic_futex_op_xchg_or(int oparg, u32 __user *uaddr,
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int *oldval)
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{
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unsigned long flags;
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int ret;
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local_irq_save(flags);
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ret = get_user(*oldval, uaddr);
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if (!ret)
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ret = put_user(*oldval | oparg, uaddr);
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local_irq_restore(flags);
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return ret;
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}
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static inline int atomic_futex_op_xchg_and(int oparg, u32 __user *uaddr,
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int *oldval)
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{
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unsigned long flags;
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int ret;
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local_irq_save(flags);
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ret = get_user(*oldval, uaddr);
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if (!ret)
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ret = put_user(*oldval & oparg, uaddr);
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local_irq_restore(flags);
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return ret;
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}
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static inline int atomic_futex_op_xchg_xor(int oparg, u32 __user *uaddr,
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int *oldval)
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{
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unsigned long flags;
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int ret;
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local_irq_save(flags);
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ret = get_user(*oldval, uaddr);
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if (!ret)
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ret = put_user(*oldval ^ oparg, uaddr);
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local_irq_restore(flags);
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return ret;
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}
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static inline int atomic_futex_op_cmpxchg_inatomic(u32 *uval,
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u32 __user *uaddr,
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u32 oldval, u32 newval)
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{
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unsigned long flags;
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int ret;
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u32 prev = 0;
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local_irq_save(flags);
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ret = get_user(prev, uaddr);
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if (!ret && oldval == prev)
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ret = put_user(newval, uaddr);
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local_irq_restore(flags);
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*uval = prev;
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return ret;
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}
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#endif /* __ASM_SH_FUTEX_IRQ_H */
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