From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262180AbVDLTni (ORCPT ); Tue, 12 Apr 2005 15:43:38 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262110AbVDLTng (ORCPT ); Tue, 12 Apr 2005 15:43:36 -0400 Received: from fire.osdl.org ([65.172.181.4]:65224 "EHLO smtp.osdl.org") by vger.kernel.org with ESMTP id S262180AbVDLKcD (ORCPT ); Tue, 12 Apr 2005 06:32:03 -0400 Message-Id: <200504121031.j3CAVttS005447@shell0.pdx.osdl.net> Subject: [patch 080/198] x86_64: Minor microoptimization in syscall entry slow path To: torvalds@osdl.org Cc: linux-kernel@vger.kernel.org, akpm@osdl.org, ak@suse.de From: akpm@osdl.org Date: Tue, 12 Apr 2005 03:31:49 -0700 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org From: "Andi Kleen" Minor microoptimization in syscall entry slow path Signed-off-by: Andi Kleen Signed-off-by: Andrew Morton --- 25-akpm/arch/x86_64/kernel/entry.S | 4 +--- 1 files changed, 1 insertion(+), 3 deletions(-) diff -puN arch/x86_64/kernel/entry.S~x86_64-minor-microoptimization-in-syscall-entry-slow-path arch/x86_64/kernel/entry.S --- 25/arch/x86_64/kernel/entry.S~x86_64-minor-microoptimization-in-syscall-entry-slow-path 2005-04-12 03:21:22.425727672 -0700 +++ 25-akpm/arch/x86_64/kernel/entry.S 2005-04-12 03:21:22.429727064 -0700 @@ -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: _