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| author | Joerg Roedel <joerg.roedel@amd.com> | 2008-12-12 15:12:14 +0100 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2009-01-03 14:11:59 +0100 |
| commit | 55877a6bcdf0843414eecc658550c6551f5b5e1d (patch) | |
| tree | 360fcc7c677260b372c5875a7b88966f79752eee /arch | |
| parent | d03f067a9d0a1cc09529427af9a15e15d32ba1de (diff) | |
| download | linux-55877a6bcdf0843414eecc658550c6551f5b5e1d.tar.bz2 | |
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@amd.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | 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 859ca741745b..49f2c8533e12 100644 --- a/arch/x86/kernel/amd_iommu.c +++ b/arch/x86/kernel/amd_iommu.c @@ -68,6 +68,7 @@ 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; @@ -98,6 +99,7 @@ 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 @@ -1443,6 +1445,8 @@ 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; |