From a9dddbe0497ab0df7ee729e8d4cb0ee2dec3e4ba Mon Sep 17 00:00:00 2001 From: Joerg Roedel Date: Fri, 12 Dec 2008 12:33:06 +0100 Subject: [PATCH] AMD IOMMU: add necessary header defines for stats counting Impact: add defines to make iommu stats collection configurable Signed-off-by: Joerg Roedel --- arch/x86/include/asm/amd_iommu_types.h | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/arch/x86/include/asm/amd_iommu_types.h b/arch/x86/include/asm/amd_iommu_types.h index 7abf9cf0c1fe..1379c5fe86d0 100644 --- a/arch/x86/include/asm/amd_iommu_types.h +++ b/arch/x86/include/asm/amd_iommu_types.h @@ -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 */ -- 2.34.1