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Message-ID: <1229350685-3816-16-git-send-email-joerg.roedel@amd.com> Date: Mon, 15 Dec 2008 15:17:58 +0100 From: Joerg Roedel <joerg.roedel@....com> To: iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org CC: Joerg Roedel <joerg.roedel@....com> Subject: [PATCH 15/22] AMD IOMMU: add stats counter for unmap_sg requests Impact: see number of unmap_sg requests in debugfs Signed-off-by: Joerg Roedel <joerg.roedel@....com> --- 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 bb0e03e..a2022de 100644 --- a/arch/x86/kernel/amd_iommu.c +++ b/arch/x86/kernel/amd_iommu.c @@ -67,6 +67,7 @@ DECLARE_STATS_COUNTER(compl_wait); DECLARE_STATS_COUNTER(cnt_map_single); DECLARE_STATS_COUNTER(cnt_unmap_single); DECLARE_STATS_COUNTER(cnt_map_sg); +DECLARE_STATS_COUNTER(cnt_unmap_sg); static struct dentry *stats_dir; static struct dentry *de_isolate; @@ -97,6 +98,7 @@ static void amd_iommu_stats_init(void) amd_iommu_stats_add(&cnt_map_single); amd_iommu_stats_add(&cnt_unmap_single); amd_iommu_stats_add(&cnt_map_sg); + amd_iommu_stats_add(&cnt_unmap_sg); } #endif @@ -1442,6 +1444,8 @@ static void unmap_sg(struct device *dev, struct scatterlist *sglist, u16 devid; int i; + INC_STATS_COUNTER(cnt_unmap_sg); + if (!check_device(dev) || !get_device_resources(dev, &iommu, &domain, &devid)) return; -- 1.5.6.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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