Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756378AbYLOOV6 (ORCPT ); Mon, 15 Dec 2008 09:21:58 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754602AbYLOOSm (ORCPT ); Mon, 15 Dec 2008 09:18:42 -0500 Received: from outbound-sin.frontbridge.com ([207.46.51.80]:55357 "EHLO SG2EHSOBE002.bigfish.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754577AbYLOOSl (ORCPT ); Mon, 15 Dec 2008 09:18:41 -0500 X-BigFish: VPS3(zzzzzzz32i43j61h) X-Spam-TCS-SCL: 0:0 X-WSS-ID: 0KBX92H-04-RHO-01 From: Joerg Roedel To: iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org CC: Joerg Roedel Subject: [PATCH 16/22] AMD IOMMU: add stats counter for alloc_coherent requests Date: Mon, 15 Dec 2008 15:17:59 +0100 Message-ID: <1229350685-3816-17-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 14:18:06.0369 (UTC) FILETIME=[F2E5F110:01C95EBF] 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: 1386 Lines: 45 Impact: see number of alloc_coherent 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 a2022de..e7180e9 100644 --- a/arch/x86/kernel/amd_iommu.c +++ b/arch/x86/kernel/amd_iommu.c @@ -68,6 +68,7 @@ DECLARE_STATS_COUNTER(cnt_map_single); DECLARE_STATS_COUNTER(cnt_unmap_single); DECLARE_STATS_COUNTER(cnt_map_sg); DECLARE_STATS_COUNTER(cnt_unmap_sg); +DECLARE_STATS_COUNTER(cnt_alloc_coherent); static struct dentry *stats_dir; static struct dentry *de_isolate; @@ -99,6 +100,7 @@ static void amd_iommu_stats_init(void) amd_iommu_stats_add(&cnt_unmap_single); amd_iommu_stats_add(&cnt_map_sg); amd_iommu_stats_add(&cnt_unmap_sg); + amd_iommu_stats_add(&cnt_alloc_coherent); } #endif @@ -1480,6 +1482,8 @@ static void *alloc_coherent(struct device *dev, size_t size, phys_addr_t paddr; u64 dma_mask = dev->coherent_dma_mask; + INC_STATS_COUNTER(cnt_alloc_coherent); + if (!check_device(dev)) return NULL; -- 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/