From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760543AbZE1PVZ (ORCPT ); Thu, 28 May 2009 11:21:25 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754554AbZE1PUu (ORCPT ); Thu, 28 May 2009 11:20:50 -0400 Received: from va3ehsobe005.messaging.microsoft.com ([216.32.180.15]:14144 "EHLO VA3EHSOBE005.bigfish.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1758742AbZE1PUt (ORCPT ); Thu, 28 May 2009 11:20:49 -0400 X-BigFish: VPS3(zzzz1202hzzz32i43j65h) X-Spam-TCS-SCL: 4:0 X-FB-SS: 5, X-WSS-ID: 0KKD1AC-01-JYU-01 From: Joerg Roedel To: iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org CC: Joerg Roedel Subject: [PATCH 3/4] dma-debug: add dma_debug_driver kernel command line Date: Thu, 28 May 2009 17:19:30 +0200 Message-ID: <1243523971-12681-4-git-send-email-joerg.roedel@amd.com> X-Mailer: git-send-email 1.6.3.1 In-Reply-To: <1243523971-12681-1-git-send-email-joerg.roedel@amd.com> References: <1243523971-12681-1-git-send-email-joerg.roedel@amd.com> X-OriginalArrivalTime: 28 May 2009 15:19:34.0435 (UTC) FILETIME=[B4E72730:01C9DFA7] MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch add the dma_debug_driver= boot parameter to enable the driver filter for early boot. Signed-off-by: Joerg Roedel --- lib/dma-debug.c | 19 +++++++++++++++++++ 1 files changed, 19 insertions(+), 0 deletions(-) diff --git a/lib/dma-debug.c b/lib/dma-debug.c index 65043c7..7b51fa4 100644 --- a/lib/dma-debug.c +++ b/lib/dma-debug.c @@ -1098,3 +1098,22 @@ void debug_dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, } EXPORT_SYMBOL(debug_dma_sync_sg_for_device); +static int __init parse_dma_debug_driver(char *str) +{ + int i; + + for (i = 0; i < NAME_MAX_LEN - 1; ++i, ++str) { + current_driver_name[i] = *str; + if (*str == ' ' || *str == '\t' || isspace(*str) || *str == 0) + break; + } + current_driver_name[i] = 0; + + if (current_driver_name[0]) + printk(KERN_INFO "DMA-API: enable driver filter for " + "driver [%s]\n", current_driver_name); + + + return 1; +} +__setup("dma_debug_driver=", parse_dma_debug_driver); -- 1.6.3.1