Commit d03f067a authored by Joerg Roedel's avatar Joerg Roedel

AMD IOMMU: add stats counter for map_sg requests

Impact: see number of map_sg requests in debugfs
Signed-off-by: default avatarJoerg Roedel <[email protected]>
parent 146a6917
......@@ -67,6 +67,7 @@ static struct dma_ops_domain *find_protection_domain(u16 devid);
DECLARE_STATS_COUNTER(compl_wait);
DECLARE_STATS_COUNTER(cnt_map_single);
DECLARE_STATS_COUNTER(cnt_unmap_single);
DECLARE_STATS_COUNTER(cnt_map_sg);
static struct dentry *stats_dir;
static struct dentry *de_isolate;
......@@ -96,6 +97,7 @@ static void amd_iommu_stats_init(void)
amd_iommu_stats_add(&compl_wait);
amd_iommu_stats_add(&cnt_map_single);
amd_iommu_stats_add(&cnt_unmap_single);
amd_iommu_stats_add(&cnt_map_sg);
}
#endif
......@@ -1377,6 +1379,8 @@ static int map_sg(struct device *dev, struct scatterlist *sglist,
int mapped_elems = 0;
u64 dma_mask;
INC_STATS_COUNTER(cnt_map_sg);
if (!check_device(dev))
return 0;
......
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