Commit 55877a6b authored by Joerg Roedel's avatar Joerg Roedel

AMD IOMMU: add stats counter for unmap_sg requests

Impact: see number of unmap_sg requests in debugfs
Signed-off-by: default avatarJoerg Roedel <joerg.roedel@amd.com>
parent d03f067a
......@@ -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;
......
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