The following commit has been merged into the x86/asm branch of tip: Commit-ID: 6865dc3ae93b9acb336ca48bd7b2db3446d89370 Gitweb: https://git.kernel.org/tip/6865dc3ae93b9acb336ca48bd7b2db3446d89370 Author: Brian Gerst <brgerst@xxxxxxxxx> AuthorDate: Mon, 20 Jul 2020 13:49:15 -07:00 Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx> CommitterDate: Thu, 23 Jul 2020 11:46:39 +02:00 x86/percpu: Introduce size abstraction macros In preparation for cleaning up the percpu operations, define macros for abstraction based on the width of the operation. Signed-off-by: Brian Gerst <brgerst@xxxxxxxxx> Signed-off-by: Nick Desaulniers <ndesaulniers@xxxxxxxxxx> Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Tested-by: Nick Desaulniers <ndesaulniers@xxxxxxxxxx> Tested-by: Sedat Dilek <sedat.dilek@xxxxxxxxx> Reviewed-by: Nick Desaulniers <ndesaulniers@xxxxxxxxxx> Acked-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> Acked-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx> Acked-by: Dennis Zhou <dennis@xxxxxxxxxx> Link: https://lkml.kernel.org/r/20200720204925.3654302-2-ndesaulniers@xxxxxxxxxx --- arch/x86/include/asm/percpu.h | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/arch/x86/include/asm/percpu.h b/arch/x86/include/asm/percpu.h index 2278797..19838e4 100644 --- a/arch/x86/include/asm/percpu.h +++ b/arch/x86/include/asm/percpu.h @@ -87,6 +87,36 @@ * don't give an lvalue though). */ extern void __bad_percpu_size(void); +#define __pcpu_type_1 u8 +#define __pcpu_type_2 u16 +#define __pcpu_type_4 u32 +#define __pcpu_type_8 u64 + +#define __pcpu_cast_1(val) ((u8)(((unsigned long) val) & 0xff)) +#define __pcpu_cast_2(val) ((u16)(((unsigned long) val) & 0xffff)) +#define __pcpu_cast_4(val) ((u32)(((unsigned long) val) & 0xffffffff)) +#define __pcpu_cast_8(val) ((u64)(val)) + +#define __pcpu_op1_1(op, dst) op "b " dst +#define __pcpu_op1_2(op, dst) op "w " dst +#define __pcpu_op1_4(op, dst) op "l " dst +#define __pcpu_op1_8(op, dst) op "q " dst + +#define __pcpu_op2_1(op, src, dst) op "b " src ", " dst +#define __pcpu_op2_2(op, src, dst) op "w " src ", " dst +#define __pcpu_op2_4(op, src, dst) op "l " src ", " dst +#define __pcpu_op2_8(op, src, dst) op "q " src ", " dst + +#define __pcpu_reg_1(mod, x) mod "q" (x) +#define __pcpu_reg_2(mod, x) mod "r" (x) +#define __pcpu_reg_4(mod, x) mod "r" (x) +#define __pcpu_reg_8(mod, x) mod "r" (x) + +#define __pcpu_reg_imm_1(x) "qi" (x) +#define __pcpu_reg_imm_2(x) "ri" (x) +#define __pcpu_reg_imm_4(x) "ri" (x) +#define __pcpu_reg_imm_8(x) "re" (x) + #define percpu_to_op(qual, op, var, val) \ do { \ typedef typeof(var) pto_T__; \
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