From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-px0-f199.google.com (mail-px0-f199.google.com [209.85.216.199]) by ozlabs.org (Postfix) with ESMTP id 4BCB1B7C1E for ; Tue, 3 Nov 2009 02:40:03 +1100 (EST) Received: by pxi37 with SMTP id 37so3203558pxi.15 for ; Mon, 02 Nov 2009 07:40:02 -0800 (PST) MIME-Version: 1.0 Date: Mon, 2 Nov 2009 23:40:02 +0800 Message-ID: <389deec70911020740k13b56bc6kdad3bfaa39916f54@mail.gmail.com> Subject: mpc8548 does not make use of DMA when doing memory copy? From: hank peng To: linuxppc-dev@ozlabs.org Content-Type: text/plain; charset=UTF-8 List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Kernel version is 2.6.30 and I have enabled fsl DMA engine during configuring kernel. After system booted, I have seen only 38 DMA interrupts, and no increase later when I am doing data transfer through network. So I wonder if mpc8548 had made use of DMA engine when doing memcpy, or maybe if there are other things I haven't noticed? -- The simplest is not all best but the best is surely the simplest!