Messages in this thread Patch in this message | | | Date | Tue, 21 Feb 2006 09:46:37 +0100 | From | Ingo Molnar <> | Subject | [patch 1/6] lightweight robust futexes: arch defaults |
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add placeholder futex_atomic_cmpxchg_inuser() implementations to every architecture that supports futexes. It returns -ENOSYS.
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>
----
include/asm-frv/futex.h | 6 ++++++ include/asm-generic/futex.h | 6 ++++++ include/asm-i386/futex.h | 6 ++++++ include/asm-mips/futex.h | 6 ++++++ include/asm-powerpc/futex.h | 6 ++++++ include/asm-x86_64/futex.h | 6 ++++++ 6 files changed, 36 insertions(+)
Index: linux-robust-list.q/include/asm-frv/futex.h =================================================================== --- linux-robust-list.q.orig/include/asm-frv/futex.h +++ linux-robust-list.q/include/asm-frv/futex.h @@ -9,5 +9,11 @@ extern int futex_atomic_op_inuser(int encoded_op, int __user *uaddr); +static inline int +futex_atomic_cmpxchg_inuser(int __user *uaddr, int oldval, int newval) +{ + return -ENOSYS; +} + #endif #endif Index: linux-robust-list.q/include/asm-generic/futex.h =================================================================== --- linux-robust-list.q.orig/include/asm-generic/futex.h +++ linux-robust-list.q/include/asm-generic/futex.h @@ -49,5 +49,11 @@ futex_atomic_op_inuser (int encoded_op, return ret; } +static inline int +futex_atomic_cmpxchg_inuser(int __user *uaddr, int oldval, int newval) +{ + return -ENOSYS; +} + #endif #endif Index: linux-robust-list.q/include/asm-i386/futex.h =================================================================== --- linux-robust-list.q.orig/include/asm-i386/futex.h +++ linux-robust-list.q/include/asm-i386/futex.h @@ -104,5 +104,11 @@ futex_atomic_op_inuser (int encoded_op, return ret; } +static inline int +futex_atomic_cmpxchg_inuser(int __user *uaddr, int oldval, int newval) +{ + return -ENOSYS; +} + #endif #endif Index: linux-robust-list.q/include/asm-mips/futex.h =================================================================== --- linux-robust-list.q.orig/include/asm-mips/futex.h +++ linux-robust-list.q/include/asm-mips/futex.h @@ -99,5 +99,11 @@ futex_atomic_op_inuser (int encoded_op, return ret; } +static inline int +futex_atomic_cmpxchg_inuser(int __user *uaddr, int oldval, int newval) +{ + return -ENOSYS; +} + #endif #endif Index: linux-robust-list.q/include/asm-powerpc/futex.h =================================================================== --- linux-robust-list.q.orig/include/asm-powerpc/futex.h +++ linux-robust-list.q/include/asm-powerpc/futex.h @@ -81,5 +81,11 @@ static inline int futex_atomic_op_inuser return ret; } +static inline int +futex_atomic_cmpxchg_inuser(int __user *uaddr, int oldval, int newval) +{ + return -ENOSYS; +} + #endif /* __KERNEL__ */ #endif /* _ASM_POWERPC_FUTEX_H */ Index: linux-robust-list.q/include/asm-x86_64/futex.h =================================================================== --- linux-robust-list.q.orig/include/asm-x86_64/futex.h +++ linux-robust-list.q/include/asm-x86_64/futex.h @@ -94,5 +94,11 @@ futex_atomic_op_inuser (int encoded_op, return ret; } +static inline int +futex_atomic_cmpxchg_inuser(int __user *uaddr, int oldval, int newval) +{ + return -ENOSYS; +} + #endif #endif - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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