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Message-ID: <1229350685-3816-23-git-send-email-joerg.roedel@amd.com> Date: Mon, 15 Dec 2008 15:18:05 +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 22/22] AMD IOMMU: add statistics about total number of map requests Impact: see total number of map 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 9c34902..c8d4301 100644 --- a/arch/x86/kernel/amd_iommu.c +++ b/arch/x86/kernel/amd_iommu.c @@ -74,6 +74,7 @@ DECLARE_STATS_COUNTER(cross_page); DECLARE_STATS_COUNTER(domain_flush_single); DECLARE_STATS_COUNTER(domain_flush_all); DECLARE_STATS_COUNTER(alloced_io_mem); +DECLARE_STATS_COUNTER(total_map_requests); static struct dentry *stats_dir; static struct dentry *de_isolate; @@ -111,6 +112,7 @@ static void amd_iommu_stats_init(void) amd_iommu_stats_add(&domain_flush_single); amd_iommu_stats_add(&domain_flush_all); amd_iommu_stats_add(&alloced_io_mem); + amd_iommu_stats_add(&total_map_requests); } #endif @@ -1228,6 +1230,8 @@ static dma_addr_t __map_single(struct device *dev, pages = iommu_num_pages(paddr, size, PAGE_SIZE); paddr &= PAGE_MASK; + INC_STATS_COUNTER(total_map_requests); + if (pages > 1) INC_STATS_COUNTER(cross_page); -- 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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