From 36c1104e309fe93375e67cdbdb2a980f23965f3b Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Sat, 16 Apr 2005 15:25:01 -0700 Subject: [PATCH] [PATCH] x86_64: Minor microoptimization in syscall entry slow path Minor microoptimization in syscall entry slow path Signed-off-by: Andi Kleen Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/x86_64/kernel/entry.S | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/arch/x86_64/kernel/entry.S b/arch/x86_64/kernel/entry.S index e126284db7a8..053d6e80c31f 100644 --- a/arch/x86_64/kernel/entry.S +++ b/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 - btr $TIF_SYSCALL_AUDIT,%edi - btr $TIF_SINGLESTEP,%edi + andl $~(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SINGLESTEP),%edi jmp int_restore_rest int_signal: