diff options
| author | H. Peter Anvin | 2012-11-28 20:50:25 +0100 |
|---|---|---|
| committer | H. Peter Anvin | 2012-11-29 22:23:02 +0100 |
| commit | 7ac468b1300f35143a9b5b100e3970ca7ae1d9b8 (patch) | |
| tree | 1c928b80c897acc8bf7f47de8ef3793c5ba30c2c /arch/x86/include/asm/atomic.h | |
| parent | x86, 386 removal: Remove CONFIG_CMPXCHG (diff) | |
| download | kernel-qcow2-linux-7ac468b1300f35143a9b5b100e3970ca7ae1d9b8.tar.gz kernel-qcow2-linux-7ac468b1300f35143a9b5b100e3970ca7ae1d9b8.tar.xz kernel-qcow2-linux-7ac468b1300f35143a9b5b100e3970ca7ae1d9b8.zip | |
x86, 386 removal: Remove CONFIG_XADD
All 486+ CPUs support XADD, so remove the fallback 386 support
code.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Link: http://lkml.kernel.org/r/1354132230-21854-4-git-send-email-hpa@linux.intel.com
Diffstat (limited to 'arch/x86/include/asm/atomic.h')
| -rw-r--r-- | arch/x86/include/asm/atomic.h | 16 |
1 files changed, 0 insertions, 16 deletions
diff --git a/arch/x86/include/asm/atomic.h b/arch/x86/include/asm/atomic.h index b6c3b821acf6..722aa3b04624 100644 --- a/arch/x86/include/asm/atomic.h +++ b/arch/x86/include/asm/atomic.h @@ -172,23 +172,7 @@ static inline int atomic_add_negative(int i, atomic_t *v) */ static inline int atomic_add_return(int i, atomic_t *v) { -#ifdef CONFIG_M386 - int __i; - unsigned long flags; - if (unlikely(boot_cpu_data.x86 <= 3)) - goto no_xadd; -#endif - /* Modern 486+ processor */ return i + xadd(&v->counter, i); - -#ifdef CONFIG_M386 -no_xadd: /* Legacy 386 processor */ - raw_local_irq_save(flags); - __i = atomic_read(v); - atomic_set(v, i + __i); - raw_local_irq_restore(flags); - return i + __i; -#endif } /** |