From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sc8-sf-mx1-b.sourceforge.net ([10.3.1.11] helo=sc8-sf-mx1.sourceforge.net) by sc8-sf-list1.sourceforge.net with esmtp (Exim 4.30) id 1DkRRl-0000kD-BZ for user-mode-linux-devel@lists.sourceforge.net; Mon, 20 Jun 2005 11:56:37 -0700 Received: from lakshmi.addtoit.com ([198.99.130.6] helo=lakshmi.solana.com) by sc8-sf-mx1.sourceforge.net with esmtp (Exim 4.41) id 1DkRRi-0000Ic-Lf for user-mode-linux-devel@lists.sourceforge.net; Mon, 20 Jun 2005 11:56:37 -0700 Message-Id: <200506201851.j5KIpKPr008499@ccure.user-mode-linux.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii From: Jeff Dike Subject: [uml-devel] [PATCH 6/8] UML - Kill some useless vmalloc tlb flushing Sender: user-mode-linux-devel-admin@lists.sourceforge.net Errors-To: user-mode-linux-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Id: The user-mode Linux development list List-Post: List-Help: List-Subscribe: , List-Archive: Date: Mon, 20 Jun 2005 14:51:20 -0400 To: akpm@osdl.org, torvalds@osdl.org Cc: linux-kernel@vger.kernel.org, user-mode-linux-devel@lists.sourceforge.net There is absolutely no reason to flush the kernel's VM area during a tlb_flush_mm. This results in a noticable performance increase in the kernel build benchmark. Signed-off-by: Jeff Dike Index: linux-2.6.12/arch/um/kernel/skas/tlb.c =================================================================== --- linux-2.6.12.orig/arch/um/kernel/skas/tlb.c 2005-06-20 11:54:56.000000000 -0400 +++ linux-2.6.12/arch/um/kernel/skas/tlb.c 2005-06-20 12:11:00.000000000 -0400 @@ -76,7 +76,6 @@ void flush_tlb_mm_skas(struct mm_struct return; fix_range(mm, 0, host_task_size, 0); - flush_tlb_kernel_range_common(start_vm, end_vm); } void force_flush_all_skas(void) ------------------------------------------------------- SF.Net email is sponsored by: Discover Easy Linux Migration Strategies from IBM. Find simple to follow Roadmaps, straightforward articles, informative Webcasts and more! Get everything you need to get up to speed, fast. http://ads.osdn.com/?ad_id=7477&alloc_id=16492&op=click _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel