[PATCH] x86_64: Minor microoptimization in syscall entry slow path

Minor microoptimization in syscall entry slow path

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/x86_64/kernel/entry.S

@@ -302,9 +302,7 @@ int_very_careful:
 	leaq 8(%rsp),%rdi	# &ptregs -> arg1	
 	call syscall_trace_leave
 	popq %rdi
-	btr  $TIF_SYSCALL_TRACE,%edi
+	andl $~(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SINGLESTEP),%edi
-	btr  $TIF_SYSCALL_AUDIT,%edi
-	btr  $TIF_SINGLESTEP,%edi
 	jmp int_restore_rest
 	
 int_signal: