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[174.84.153.250]) by smtp.gmail.com with ESMTPSA id w78sm2735698ilk.14.2020.05.30.15.11.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 30 May 2020 15:11:40 -0700 (PDT) From: Brian Gerst To: linux-kernel@vger.kernel.org, x86@kernel.org Cc: Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H . Peter Anvin" , Andy Lutomirski , Peter Zijlstra , Nick Desaulniers , Brian Gerst Subject: [PATCH v2 01/10] x86/percpu: Introduce size abstraction macros Date: Sat, 30 May 2020 18:11:18 -0400 Message-Id: <20200530221127.459704-2-brgerst@gmail.com> X-Mailer: git-send-email 2.25.4 In-Reply-To: <20200530221127.459704-1-brgerst@gmail.com> References: <20200530221127.459704-1-brgerst@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org In preparation for cleaning up the percpu operations, define macros for abstraction based on the width of the operation. Signed-off-by: Brian Gerst --- 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 2278797c769d..19838e4f7a8f 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__; \ -- 2.25.4