提交 c8f0fb36 编写于 作者: J Joerg Roedel

AMD IOMMU: add stats counter for alloc_coherent requests

Impact: see number of alloc_coherent requests in debugfs
Signed-off-by: NJoerg Roedel <joerg.roedel@amd.com>
上级 55877a6b
...@@ -69,6 +69,7 @@ DECLARE_STATS_COUNTER(cnt_map_single); ...@@ -69,6 +69,7 @@ DECLARE_STATS_COUNTER(cnt_map_single);
DECLARE_STATS_COUNTER(cnt_unmap_single); DECLARE_STATS_COUNTER(cnt_unmap_single);
DECLARE_STATS_COUNTER(cnt_map_sg); DECLARE_STATS_COUNTER(cnt_map_sg);
DECLARE_STATS_COUNTER(cnt_unmap_sg); DECLARE_STATS_COUNTER(cnt_unmap_sg);
DECLARE_STATS_COUNTER(cnt_alloc_coherent);
static struct dentry *stats_dir; static struct dentry *stats_dir;
static struct dentry *de_isolate; static struct dentry *de_isolate;
...@@ -100,6 +101,7 @@ static void amd_iommu_stats_init(void) ...@@ -100,6 +101,7 @@ static void amd_iommu_stats_init(void)
amd_iommu_stats_add(&cnt_unmap_single); amd_iommu_stats_add(&cnt_unmap_single);
amd_iommu_stats_add(&cnt_map_sg); amd_iommu_stats_add(&cnt_map_sg);
amd_iommu_stats_add(&cnt_unmap_sg); amd_iommu_stats_add(&cnt_unmap_sg);
amd_iommu_stats_add(&cnt_alloc_coherent);
} }
#endif #endif
...@@ -1481,6 +1483,8 @@ static void *alloc_coherent(struct device *dev, size_t size, ...@@ -1481,6 +1483,8 @@ static void *alloc_coherent(struct device *dev, size_t size,
phys_addr_t paddr; phys_addr_t paddr;
u64 dma_mask = dev->coherent_dma_mask; u64 dma_mask = dev->coherent_dma_mask;
INC_STATS_COUNTER(cnt_alloc_coherent);
if (!check_device(dev)) if (!check_device(dev))
return NULL; return NULL;
......
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