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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>
(cherry picked from commit 15acc8fac6)
This commit is contained in:
Guangming Cao
2021-05-18 15:31:28 +08:00
parent 1f1e86960b
commit f21e6e9178
3 changed files with 14 additions and 5 deletions
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2
drivers/android/vendor_hooks.c
View File

@@ -146,6 +146,8 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_ufs_send_tm_command);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_ufs_check_int_errors);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_cgroup_attach);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_iommu_setup_dma_ops);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_iommu_iovad_alloc_iova);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_iommu_iovad_free_iova);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_ptype_head);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_kfree_skb);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_timer_calc_index);

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

@@ -25,6 +25,7 @@
#include <linux/vmalloc.h>
#include <linux/crash_dump.h>
#include <linux/dma-direct.h>
#include <trace/hooks/iommu.h>
struct iommu_dma_msi_page {
struct list_head list;
@@ -467,6 +468,8 @@ 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_iovad_alloc_iova(dev, iovad, (dma_addr_t)iova << shift, size);
return (dma_addr_t)iova << shift;
}
@@ -485,6 +488,8 @@ 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_iovad_free_iova(iovad, iova, size);
}
static void __iommu_dma_unmap(struct device *dev, dma_addr_t dma_addr,

12
include/trace/hooks/iommu.h
View File

@@ -12,17 +12,19 @@
#include <linux/tracepoint.h>
#include <trace/hooks/vendor_hooks.h>
#if defined(CONFIG_TRACEPOINTS) && defined(CONFIG_ANDROID_VENDOR_HOOKS)
DECLARE_HOOK(android_vh_iommu_setup_dma_ops,
TP_PROTO(struct device *dev, u64 dma_base, u64 dma_limit),
TP_ARGS(dev, dma_base, dma_limit));
#else
struct iova_domain;
#define trace_android_vh_iommu_setup_dma_ops(dev, dma_base, dma_limit)
DECLARE_HOOK(android_vh_iommu_iovad_alloc_iova,
TP_PROTO(struct device *dev, struct iova_domain *iovad, dma_addr_t iova, size_t size),
TP_ARGS(dev, iovad, iova, size));
#endif
DECLARE_HOOK(android_vh_iommu_iovad_free_iova,
TP_PROTO(struct iova_domain *iovad, dma_addr_t iova, size_t size),
TP_ARGS(iovad, iova, size));
#endif /* _TRACE_HOOK_IOMMU_H */