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Commit a9dddbe0 authored by Joerg Roedel's avatar Joerg Roedel
Browse files

AMD IOMMU: add necessary header defines for stats counting 



Impact: add defines to make iommu stats collection configurable

Signed-off-by: default avatarJoerg Roedel <joerg.roedel@amd.com>
parent 2e117604

arch/x86/include/asm/amd_iommu_types.h

+26 −0
Original line number Diff line number Diff line
@@ -396,4 +396,30 @@ static inline u16 calc_devid(u8 bus, u8 devfn) 
	return (((u16)bus) << 8) | devfn;

}



#ifdef CONFIG_AMD_IOMMU_STATS



struct __iommu_counter {

	char *name;

	struct dentry *dent;

	u64 value;

};



#define DECLARE_STATS_COUNTER(nm) \

	static struct __iommu_counter nm = {	\

		.name = #nm,			\

	}



#define INC_STATS_COUNTER(name)		name.value += 1

#define ADD_STATS_COUNTER(name, x)	name.value += (x)

#define SUB_STATS_COUNTER(name, x)	name.value -= (x)



#else /* CONFIG_AMD_IOMMU_STATS */



#define DECLARE_STATS_COUNTER(name)

#define INC_STATS_COUNTER(name)

#define ADD_STATS_COUNTER(name, x)

#define SUB_STATS_COUNTER(name, x)



#endif /* CONFIG_AMD_IOMMU_STATS */



#endif /* _ASM_X86_AMD_IOMMU_TYPES_H */