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-rw-r--r--arch/x86_64/lib/thunk.S30
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