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ANDROID: iommu: Add vendor hook for iova allocation and free tracking

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Add vendor hook for iommu_dma_alloc_iova and iommu_dma_free_iova
to allow vendor enhancement.

Bug: 187861158

Change-Id: I2ebe8b24318bd5292edc66a94d7109332d478212
Signed-off-by: Guangming Cao <Guangming.Cao@mediatek.com>
This commit is contained in:
Guangming Cao
2021-05-18 15:31:28 +08:00
committed by Suren Baghdasaryan
parent 9b6836900e
commit 15acc8fac6
3 changed files with 16 additions and 0 deletions
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2
drivers/android/vendor_hooks.c
View File

@@ -175,6 +175,8 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_do_sea);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_do_mem_abort);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_do_sp_pc_abort);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_iommu_setup_dma_ops);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_iommu_alloc_iova);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_iommu_free_iova);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_pick_next_entity);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_check_preempt_wakeup);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_cma_alloc_start);

5
drivers/iommu/dma-iommu.c
View File

@@ -23,6 +23,7 @@
#include <linux/scatterlist.h>
#include <linux/vmalloc.h>
#include <linux/crash_dump.h>
#include <trace/hooks/iommu.h>
struct iommu_dma_msi_page {
struct list_head list;
@@ -486,6 +487,8 @@ static dma_addr_t iommu_dma_alloc_iova(struct iommu_domain *domain,
iova = alloc_iova_fast(iovad, iova_len, dma_limit >> shift,
true);
trace_android_vh_iommu_alloc_iova(dev, iova, size);
return (dma_addr_t)iova << shift;
}
@@ -503,6 +506,8 @@ static void iommu_dma_free_iova(struct iommu_dma_cookie *cookie,
else
free_iova_fast(iovad, iova_pfn(iovad, iova),
size >> iova_shift(iovad));
trace_android_vh_iommu_free_iova(iova, size);
}
static void __iommu_dma_unmap(struct device *dev, dma_addr_t dma_addr,

9
include/trace/hooks/iommu.h
View File

@@ -18,9 +18,18 @@ DECLARE_HOOK(android_vh_iommu_setup_dma_ops,
TP_PROTO(struct device *dev, u64 dma_base, u64 size),
TP_ARGS(dev, dma_base, size));
DECLARE_HOOK(android_vh_iommu_alloc_iova,
TP_PROTO(struct device *dev, dma_addr_t iova, size_t size),
TP_ARGS(dev, iova, size));
DECLARE_HOOK(android_vh_iommu_free_iova,
TP_PROTO(dma_addr_t iova, size_t size),
TP_ARGS(iova, size));
#else
#define trace_android_vh_iommu_setup_dma_ops(dev, dma_base, size)
#define trace_android_vh_iommu_alloc_iova(dev, iova, size)
#define trace_android_vh_iommu_free_iova(iova, size)
#endif