From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-20.6 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT,USER_IN_DEF_DKIM_WL autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DCC14C433DF for ; Mon, 20 Jul 2020 20:49:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B685122B4E for ; Mon, 20 Jul 2020 20:49:49 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="JYYPB8p5" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729264AbgGTUts (ORCPT ); Mon, 20 Jul 2020 16:49:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58540 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726012AbgGTUts (ORCPT ); Mon, 20 Jul 2020 16:49:48 -0400 Received: from mail-pf1-x449.google.com (mail-pf1-x449.google.com [IPv6:2607:f8b0:4864:20::449]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F0ACBC0619D2 for ; Mon, 20 Jul 2020 13:49:47 -0700 (PDT) Received: by mail-pf1-x449.google.com with SMTP id b69so13489947pfb.14 for ; Mon, 20 Jul 2020 13:49:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=ac83xydEfYdvLnMrJP/6mCcgSl/ZzWMIDDapcG1OTQM=; b=JYYPB8p5iFY3MWf4GNM8ckYki4GjyRtkNH0mEHHR6DuTXDz7v7vhNYqSLMKWEpIxpk 67SB7uVG5diSpuJU9VIA+1E7xEiXuw4VQd/KY2svSaTM2z9wPWEkKmWmCJyXmRqdXmF7 trgYDOyoqDppd4svcJADvNjOmp6UbmHw2OPek+BF0bAro4xX5Z4j4CgUg0LFFEKPQeGt Yl1oAy6z985PPupmzxMiHAzp98NNo3TH8DRKPJZ07XY7n0W2TVbpLo5WQoGoby8h9Lqd Tl+mXCah0XlpzwdBdghBPcpk0QCgZqmp+6UVpFb3ikPBSRDHA7l03Vv3hgoQbiWPaZmo cEEA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=ac83xydEfYdvLnMrJP/6mCcgSl/ZzWMIDDapcG1OTQM=; b=cyQ29MKF3F5f/IoIH3Uuv77OQZilScilRzNmBjMDebQOI3Mg0qNiJJBIDeDCZtThkI X+16+PKu4tPzba8J4/kQ89pCWXPY3JYt8Lso+eGROdtfrwyzI+04NE40GP++8Gi3FEeD U0uHNE6mkehczmdj9kaPz4jxIc+OabVG6M3msMqswA8fLFAoW4iRWLQ1imsznQyaWwCt E8AVFOewuy/jNZK8VmOOPJIfqfJHrYQ1RuWbndLtUHvfww7S0FDIHmmh/Vy0Q9NMbDxr TmIL8OlGxM4gZt+oxF1c3f9eiPRFSVeZ6FXYhtzLm+jxR8P5Oc7NfzwWYhJuYa8ycxRd rxoQ== X-Gm-Message-State: AOAM533EtoqfTzBXhRGcx/Rx4OExYEc1KdzKbPGcE9DcopzL8DOhypWU TWISlU1pHo8Kb8/EfAtqZ0s+QLtlEUDDxdn87ek= X-Google-Smtp-Source: ABdhPJw98Zd0E/0WiYRTH3b0fYqoMSHEZvRfmY7LV+yC1lJ+AOF/FHu3Mz/4q19YkYVCqUSDGi0fX2CJAgS2AsOD1VM= X-Received: by 2002:a17:90a:d48a:: with SMTP id s10mr1102818pju.116.1595278187193; Mon, 20 Jul 2020 13:49:47 -0700 (PDT) Date: Mon, 20 Jul 2020 13:49:15 -0700 In-Reply-To: <20200720204925.3654302-1-ndesaulniers@google.com> Message-Id: <20200720204925.3654302-2-ndesaulniers@google.com> Mime-Version: 1.0 References: <20200720204925.3654302-1-ndesaulniers@google.com> X-Mailer: git-send-email 2.28.0.rc0.105.gf9edc3c819-goog Subject: [PATCH v3 01/11] x86/percpu: Introduce size abstraction macros From: Nick Desaulniers To: Thomas Gleixner , Ingo Molnar , Borislav Petkov Cc: Dennis Zhou , Tejun Heo , Christoph Lameter , x86@kernel.org, "H. Peter Anvin" , Al Viro , Andrew Morton , Peter Zijlstra , linux-kernel@vger.kernel.org, clang-built-linux@googlegroups.com, Brian Gerst , Nick Desaulniers , Linus Torvalds Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Brian Gerst In preparation for cleaning up the percpu operations, define macros for abstraction based on the width of the operation. Tested-by: Nick Desaulniers Reviewed-by: Nick Desaulniers Acked-by: Linus Torvalds Acked-by: Peter Zijlstra (Intel) Signed-off-by: Brian Gerst Signed-off-by: Nick Desaulniers --- 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__; \ -- 2.28.0.rc0.105.gf9edc3c819-goog