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| author | Liam Mark <lmark@codeaurora.org> | 2015-06-05 17:10:00 -0700 |
|---|---|---|
| committer | David Keitel <dkeitel@codeaurora.org> | 2016-03-22 11:12:47 -0700 |
| commit | d85c7f8f7cad50135463a6fd267d2d9a07ced00a (patch) | |
| tree | ed46fc77ef03d607bafb39ab1c4732b9ab98eba9 /include/linux | |
| parent | 85e70599b1508526f2ac314dbeeb76e7981a12f5 (diff) | |
iommu: add ftrace profiling for map and unmap
Add ftrace start and end logging for map, iommu_map_sg and unmap
in order to facilitate performance testing.
Change-Id: I9ddf241ffa6cf519f6abece7b0820640f5ce1975
Signed-off-by: Liam Mark <lmark@codeaurora.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/iommu.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/include/linux/iommu.h b/include/linux/iommu.h index 2d835b7c226d..614363f84b38 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -262,7 +262,12 @@ static inline size_t iommu_map_sg(struct iommu_domain *domain, unsigned long iova, struct scatterlist *sg, unsigned int nents, int prot) { - return domain->ops->map_sg(domain, iova, sg, nents, prot); + size_t ret; + + trace_map_sg_start(iova, nents); + ret = domain->ops->map_sg(domain, iova, sg, nents, prot); + trace_map_sg_end(iova, nents); + return ret; } extern int iommu_dma_supported(struct iommu_domain *domain, struct device *dev, |