Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755914AbYLOOUn (ORCPT ); Mon, 15 Dec 2008 09:20:43 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751595AbYLOOSa (ORCPT ); Mon, 15 Dec 2008 09:18:30 -0500 Received: from outbound-sin.frontbridge.com ([207.46.51.80]:54350 "EHLO SG2EHSOBE002.bigfish.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754178AbYLOOS2 (ORCPT ); Mon, 15 Dec 2008 09:18:28 -0500 X-BigFish: VPS3(zzzzzzz32i43j62h) X-Spam-TCS-SCL: 1:0 X-WSS-ID: 0KBX92E-04-RHI-01 From: Joerg Roedel To: iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org CC: Joerg Roedel Subject: [PATCH 13/22] AMD IOMMU: add stats counter for unmap_single requests Date: Mon, 15 Dec 2008 15:17:56 +0100 Message-ID: <1229350685-3816-14-git-send-email-joerg.roedel@amd.com> X-Mailer: git-send-email 1.5.6.4 In-Reply-To: <1229350685-3816-1-git-send-email-joerg.roedel@amd.com> References: <1229350685-3816-1-git-send-email-joerg.roedel@amd.com> X-OriginalArrivalTime: 15 Dec 2008 14:18:06.0260 (UTC) FILETIME=[F2D54F40:01C95EBF] 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 Content-Length: 1407 Lines: 45 Impact: see number of unmap_single requests in debugfs Signed-off-by: Joerg Roedel --- arch/x86/kernel/amd_iommu.c | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c index 4b23879..18f26eb 100644 --- a/arch/x86/kernel/amd_iommu.c +++ b/arch/x86/kernel/amd_iommu.c @@ -65,6 +65,7 @@ static struct dma_ops_domain *find_protection_domain(u16 devid); DECLARE_STATS_COUNTER(compl_wait); DECLARE_STATS_COUNTER(cnt_map_single); +DECLARE_STATS_COUNTER(cnt_unmap_single); static struct dentry *stats_dir; static struct dentry *de_isolate; @@ -93,6 +94,7 @@ static void amd_iommu_stats_init(void) amd_iommu_stats_add(&compl_wait); amd_iommu_stats_add(&cnt_map_single); + amd_iommu_stats_add(&cnt_unmap_single); } #endif @@ -1320,6 +1322,8 @@ static void unmap_single(struct device *dev, dma_addr_t dma_addr, struct protection_domain *domain; u16 devid; + INC_STATS_COUNTER(cnt_unmap_single); + if (!check_device(dev) || !get_device_resources(dev, &iommu, &domain, &devid)) /* device not handled by any AMD IOMMU */ -- 1.5.6.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/