From 7bf8e789508c5002891f78160fba435ebba58def Mon Sep 17 00:00:00 2001 From: Joerg Roedel Date: Fri, 12 Dec 2008 14:59:58 +0100 Subject: [PATCH] --- yaml --- r: 125630 b: refs/heads/master c: da49f6df726ecaaee87757e8b65a560679d32f99 h: refs/heads/master v: v3 --- [refs] | 2 +- trunk/arch/x86/kernel/amd_iommu.c | 6 ++++++ 2 files changed, 7 insertions(+), 1 deletion(-) diff --git a/[refs] b/[refs] index 08c43d66524d..f08110953d0a 100644 --- a/[refs] +++ b/[refs] @@ -1,2 +1,2 @@ --- -refs/heads/master: 7f26508bbb76ce86aad1130ef6b7f1a4bb7de0c2 +refs/heads/master: da49f6df726ecaaee87757e8b65a560679d32f99 diff --git a/trunk/arch/x86/kernel/amd_iommu.c b/trunk/arch/x86/kernel/amd_iommu.c index f98f70626bc6..b21435748e0d 100644 --- a/trunk/arch/x86/kernel/amd_iommu.c +++ b/trunk/arch/x86/kernel/amd_iommu.c @@ -64,6 +64,8 @@ static struct dma_ops_domain *find_protection_domain(u16 devid); * Initialization code for statistics collection */ +DECLARE_STATS_COUNTER(compl_wait); + static struct dentry *stats_dir; static struct dentry *de_isolate; static struct dentry *de_fflush; @@ -88,6 +90,8 @@ static void amd_iommu_stats_init(void) de_fflush = debugfs_create_bool("fullflush", 0444, stats_dir, (u32 *)&amd_iommu_unmap_flush); + + amd_iommu_stats_add(&compl_wait); } #endif @@ -249,6 +253,8 @@ static void __iommu_wait_for_completion(struct amd_iommu *iommu) unsigned status = 0; unsigned long i = 0; + INC_STATS_COUNTER(compl_wait); + while (!ready && (i < EXIT_LOOP_COUNT)) { ++i; /* wait for the bit to become one */