Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755494AbYLOOVk (ORCPT ); Mon, 15 Dec 2008 09:21:40 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754383AbYLOOSf (ORCPT ); Mon, 15 Dec 2008 09:18:35 -0500 Received: from outbound-sin.frontbridge.com ([207.46.51.80]:54774 "EHLO SG2EHSOBE006.bigfish.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754335AbYLOOSe (ORCPT ); Mon, 15 Dec 2008 09:18:34 -0500 X-BigFish: VPS3(zzzzzzz32i43j62h) X-Spam-TCS-SCL: 1:0 X-WSS-ID: 0KBX928-04-RHB-01 From: Joerg Roedel To: iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org CC: Joerg Roedel Subject: [PATCH 12/22] AMD IOMMU: add stats counter for map_single requests Date: Mon, 15 Dec 2008 15:17:55 +0100 Message-ID: <1229350685-3816-13-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 14:18:06.0225 (UTC) FILETIME=[F2CFF810:01C95EBF] 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: 1274 Lines: 45 Impact: see number of map_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 a494a98..4b23879 100644 --- a/arch/x86/kernel/amd_iommu.c +++ b/arch/x86/kernel/amd_iommu.c @@ -64,6 +64,7 @@ static struct dma_ops_domain *find_protection_domain(u16 devid); */ DECLARE_STATS_COUNTER(compl_wait); +DECLARE_STATS_COUNTER(cnt_map_single); static struct dentry *stats_dir; static struct dentry *de_isolate; @@ -91,6 +92,7 @@ static void amd_iommu_stats_init(void) (u32 *)&amd_iommu_unmap_flush); amd_iommu_stats_add(&compl_wait); + amd_iommu_stats_add(&cnt_map_single); } #endif @@ -1277,6 +1279,8 @@ static dma_addr_t map_single(struct device *dev, phys_addr_t paddr, dma_addr_t addr; u64 dma_mask; + INC_STATS_COUNTER(cnt_map_single); + if (!check_device(dev)) return bad_dma_address; -- 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/