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AMD IOMMU: add necessary header defines for stats counting
Impact: add defines to make iommu stats collection configurable Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
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2e117604a4
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1 changed files with 26 additions and 0 deletions
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@ -396,4 +396,30 @@ static inline u16 calc_devid(u8 bus, u8 devfn)
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return (((u16)bus) << 8) | devfn;
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}
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#ifdef CONFIG_AMD_IOMMU_STATS
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struct __iommu_counter {
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char *name;
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struct dentry *dent;
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u64 value;
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};
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#define DECLARE_STATS_COUNTER(nm) \
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static struct __iommu_counter nm = { \
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.name = #nm, \
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}
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#define INC_STATS_COUNTER(name) name.value += 1
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#define ADD_STATS_COUNTER(name, x) name.value += (x)
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#define SUB_STATS_COUNTER(name, x) name.value -= (x)
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#else /* CONFIG_AMD_IOMMU_STATS */
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#define DECLARE_STATS_COUNTER(name)
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#define INC_STATS_COUNTER(name)
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#define ADD_STATS_COUNTER(name, x)
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#define SUB_STATS_COUNTER(name, x)
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#endif /* CONFIG_AMD_IOMMU_STATS */
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#endif /* _ASM_X86_AMD_IOMMU_TYPES_H */
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