diff options
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/include/asm/spinlock.h | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/arch/x86/include/asm/spinlock.h b/arch/x86/include/asm/spinlock.h index f5695eeb83ff..972c260919a3 100644 --- a/arch/x86/include/asm/spinlock.h +++ b/arch/x86/include/asm/spinlock.h | |||
| @@ -49,10 +49,6 @@ | |||
| 49 | * issues and should be optimal for the uncontended case. Note the tail must be | 49 | * issues and should be optimal for the uncontended case. Note the tail must be |
| 50 | * in the high part, because a wide xadd increment of the low part would carry | 50 | * in the high part, because a wide xadd increment of the low part would carry |
| 51 | * up and contaminate the high part. | 51 | * up and contaminate the high part. |
| 52 | * | ||
| 53 | * With fewer than 2^8 possible CPUs, we can use x86's partial registers to | ||
| 54 | * save some instructions and make the code more elegant. There really isn't | ||
| 55 | * much between them in performance though, especially as locks are out of line. | ||
| 56 | */ | 52 | */ |
| 57 | static __always_inline void __ticket_spin_lock(arch_spinlock_t *lock) | 53 | static __always_inline void __ticket_spin_lock(arch_spinlock_t *lock) |
| 58 | { | 54 | { |