diff options
| author | Rich Felker <dalias@libc.org> | 2016-04-25 23:58:03 +0200 |
|---|---|---|
| committer | Rich Felker <dalias@libc.org> | 2016-08-05 05:29:36 +0200 |
| commit | 00b73d8d1b7131da03aec73011a7286f566fe87f (patch) | |
| tree | 5a557b49eeaa1717bba015c730c5a56e8d084985 /arch/sh/include/asm/futex-irq.h | |
| parent | sh: add J2 atomics using the cas.l instruction (diff) | |
| download | linux-00b73d8d1b7131da03aec73011a7286f566fe87f.tar.xz linux-00b73d8d1b7131da03aec73011a7286f566fe87f.zip | |
sh: add working futex atomic ops on userspace addresses for smp
The version of futex.h in asm-generic should really be adapted to do
the same thing so that this hideous code does not have to be
duplicated per-arch.
Signed-off-by: Rich Felker <dalias@libc.org>
Diffstat (limited to 'arch/sh/include/asm/futex-irq.h')
| -rw-r--r-- | arch/sh/include/asm/futex-irq.h | 86 |
1 files changed, 0 insertions, 86 deletions
diff --git a/arch/sh/include/asm/futex-irq.h b/arch/sh/include/asm/futex-irq.h index 63d33129ea23..ab01dbee0a82 100644 --- a/arch/sh/include/asm/futex-irq.h +++ b/arch/sh/include/asm/futex-irq.h @@ -1,92 +1,6 @@ #ifndef __ASM_SH_FUTEX_IRQ_H #define __ASM_SH_FUTEX_IRQ_H - -static inline int atomic_futex_op_xchg_set(int oparg, u32 __user *uaddr, - int *oldval) -{ - unsigned long flags; - int ret; - - local_irq_save(flags); - - ret = get_user(*oldval, uaddr); - if (!ret) - ret = put_user(oparg, uaddr); - - local_irq_restore(flags); - - return ret; -} - -static inline int atomic_futex_op_xchg_add(int oparg, u32 __user *uaddr, - int *oldval) -{ - unsigned long flags; - int ret; - - local_irq_save(flags); - - ret = get_user(*oldval, uaddr); - if (!ret) - ret = put_user(*oldval + oparg, uaddr); - - local_irq_restore(flags); - - return ret; -} - -static inline int atomic_futex_op_xchg_or(int oparg, u32 __user *uaddr, - int *oldval) -{ - unsigned long flags; - int ret; - - local_irq_save(flags); - - ret = get_user(*oldval, uaddr); - if (!ret) - ret = put_user(*oldval | oparg, uaddr); - - local_irq_restore(flags); - - return ret; -} - -static inline int atomic_futex_op_xchg_and(int oparg, u32 __user *uaddr, - int *oldval) -{ - unsigned long flags; - int ret; - - local_irq_save(flags); - - ret = get_user(*oldval, uaddr); - if (!ret) - ret = put_user(*oldval & oparg, uaddr); - - local_irq_restore(flags); - - return ret; -} - -static inline int atomic_futex_op_xchg_xor(int oparg, u32 __user *uaddr, - int *oldval) -{ - unsigned long flags; - int ret; - - local_irq_save(flags); - - ret = get_user(*oldval, uaddr); - if (!ret) - ret = put_user(*oldval ^ oparg, uaddr); - - local_irq_restore(flags); - - return ret; -} - static inline int atomic_futex_op_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr, u32 oldval, u32 newval) |