diff options
Diffstat (limited to 'arch/x86_64/lib/thunk.S')
| -rw-r--r-- | arch/x86_64/lib/thunk.S | 30 |
1 files changed, 0 insertions, 30 deletions
diff --git a/arch/x86_64/lib/thunk.S b/arch/x86_64/lib/thunk.S index 332ea5dff91..6cff27c775a 100644 --- a/arch/x86_64/lib/thunk.S +++ b/arch/x86_64/lib/thunk.S @@ -67,33 +67,3 @@ restore_norax: RESTORE_ARGS 1 ret CFI_ENDPROC - -#ifdef CONFIG_SMP -/* Support for read/write spinlocks. */ - .text -/* rax: pointer to rwlock_t */ -ENTRY(__write_lock_failed) - lock - addl $RW_LOCK_BIAS,(%rax) -1: rep - nop - cmpl $RW_LOCK_BIAS,(%rax) - jne 1b - lock - subl $RW_LOCK_BIAS,(%rax) - jnz __write_lock_failed - ret - -/* rax: pointer to rwlock_t */ -ENTRY(__read_lock_failed) - lock - incl (%rax) -1: rep - nop - cmpl $1,(%rax) - js 1b - lock - decl (%rax) - js __read_lock_failed - ret -#endif |