diff options
| author | H. Peter Anvin <hpa@linux.intel.com> | 2012-11-28 23:50:25 +0400 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2012-11-30 01:23:02 +0400 |
| commit | 7ac468b1300f35143a9b5b100e3970ca7ae1d9b8 (patch) | |
| tree | 1c928b80c897acc8bf7f47de8ef3793c5ba30c2c /arch/x86/include/asm/local.h | |
| parent | d55c5a93db2d5fa95f233ab153f594365d95b777 (diff) | |
| download | linux-7ac468b1300f35143a9b5b100e3970ca7ae1d9b8.tar.xz | |
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/local.h')
| -rw-r--r-- | arch/x86/include/asm/local.h | 18 |
1 files changed, 1 insertions, 17 deletions
diff --git a/arch/x86/include/asm/local.h b/arch/x86/include/asm/local.h index c8bed0da434a..2d89e3980cbd 100644 --- a/arch/x86/include/asm/local.h +++ b/arch/x86/include/asm/local.h @@ -124,27 +124,11 @@ static inline int local_add_negative(long i, local_t *l) */ static inline long local_add_return(long i, local_t *l) { - long __i; -#ifdef CONFIG_M386 - unsigned long flags; - if (unlikely(boot_cpu_data.x86 <= 3)) - goto no_xadd; -#endif - /* Modern 486+ processor */ - __i = i; + long __i = i; asm volatile(_ASM_XADD "%0, %1;" : "+r" (i), "+m" (l->a.counter) : : "memory"); return i + __i; - -#ifdef CONFIG_M386 -no_xadd: /* Legacy 386 processor */ - local_irq_save(flags); - __i = local_read(l); - local_set(l, i + __i); - local_irq_restore(flags); - return i + __i; -#endif } static inline long local_sub_return(long i, local_t *l) |