From nobody Sat Apr 11 19:51:47 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B90A5C25B06 for ; Mon, 8 Aug 2022 08:06:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242092AbiHHIGi (ORCPT ); Mon, 8 Aug 2022 04:06:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38204 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242016AbiHHIGd (ORCPT ); Mon, 8 Aug 2022 04:06:33 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BB1DA13D4C; Mon, 8 Aug 2022 01:06:25 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 5499FB80DD7; Mon, 8 Aug 2022 08:06:24 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 41B85C433D6; Mon, 8 Aug 2022 08:06:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1659945983; bh=88SuZrvyL3jeJFfiTyPwnClk88QEzLMNBQPdHR9UyV4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=l4y7FiXxZ/3MlZLfl2cFaqKyz++tjbho4X9H2WHIaHFWDO4xvCWc/zx2pMZCTmn1s ckSQaw7NQ6Pqz1tTx6Tj19+TmTFv7OFhio/a29OboGFsDXyep7pzvjqsiQNxyO9FF8 p2aDspkgMOSU5FhziAy1LKzLPD2ko78xk4r2x57YV9o0MIoXHwXL96EdPbdabgQeAS EdUXQszkHktiCCDhkjmXnsppif1V4ZcWpmuIL4c0cvc4Hj6+/4REakl2Cpfo583b+7 9UEzb9BTXhYAvRoSLdFQpCxHzQSmUyE+M/pct1EIEP/461VqY22RUwFR861/Tn25c0 mmkj+T+xM93yA== From: guoren@kernel.org To: tj@kernel.org, cl@linux.com, palmer@dabbelt.com, will@kernel.org, catalin.marinas@arm.com, peterz@infradead.org, arnd@arndb.de Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, Guo Ren , Guo Ren Subject: [RFC PATCH 2/4] arm64: percpu: Use generic PERCPU_RW_OPS Date: Mon, 8 Aug 2022 04:05:58 -0400 Message-Id: <20220808080600.3346843-3-guoren@kernel.org> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220808080600.3346843-1-guoren@kernel.org> References: <20220808080600.3346843-1-guoren@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Guo Ren The generic percpu implementation also using READ_ONCE()/WRITE_ONCE(). And the generic even give a better __native_word() check. Signed-off-by: Guo Ren Signed-off-by: Guo Ren --- arch/arm64/include/asm/percpu.h | 33 --------------------------------- 1 file changed, 33 deletions(-) diff --git a/arch/arm64/include/asm/percpu.h b/arch/arm64/include/asm/percp= u.h index b9ba19dbdb69..a58de20d742a 100644 --- a/arch/arm64/include/asm/percpu.h +++ b/arch/arm64/include/asm/percpu.h @@ -52,17 +52,6 @@ static inline unsigned long __kern_my_cpu_offset(void) #define __my_cpu_offset __kern_my_cpu_offset() #endif =20 -#define PERCPU_RW_OPS(sz) \ -static inline unsigned long __percpu_read_##sz(void *ptr) \ -{ \ - return READ_ONCE(*(u##sz *)ptr); \ -} \ - \ -static inline void __percpu_write_##sz(void *ptr, unsigned long val) \ -{ \ - WRITE_ONCE(*(u##sz *)ptr, (u##sz)val); \ -} - #define __PERCPU_OP_CASE(w, sfx, name, sz, op_llsc, op_lse) \ static inline void \ __percpu_##name##_case_##sz(void *ptr, unsigned long val) \ @@ -120,10 +109,6 @@ __percpu_##name##_return_case_##sz(void *ptr, unsigned= long val) \ __PERCPU_RET_OP_CASE(w, , name, 32, op_llsc, op_lse) \ __PERCPU_RET_OP_CASE( , , name, 64, op_llsc, op_lse) =20 -PERCPU_RW_OPS(8) -PERCPU_RW_OPS(16) -PERCPU_RW_OPS(32) -PERCPU_RW_OPS(64) PERCPU_OP(add, add, stadd) PERCPU_OP(andnot, bic, stclr) PERCPU_OP(or, orr, stset) @@ -168,24 +153,6 @@ PERCPU_RET_OP(add, add, ldadd) __retval; \ }) =20 -#define this_cpu_read_1(pcp) \ - _pcp_protect_return(__percpu_read_8, pcp) -#define this_cpu_read_2(pcp) \ - _pcp_protect_return(__percpu_read_16, pcp) -#define this_cpu_read_4(pcp) \ - _pcp_protect_return(__percpu_read_32, pcp) -#define this_cpu_read_8(pcp) \ - _pcp_protect_return(__percpu_read_64, pcp) - -#define this_cpu_write_1(pcp, val) \ - _pcp_protect(__percpu_write_8, pcp, (unsigned long)val) -#define this_cpu_write_2(pcp, val) \ - _pcp_protect(__percpu_write_16, pcp, (unsigned long)val) -#define this_cpu_write_4(pcp, val) \ - _pcp_protect(__percpu_write_32, pcp, (unsigned long)val) -#define this_cpu_write_8(pcp, val) \ - _pcp_protect(__percpu_write_64, pcp, (unsigned long)val) - #define this_cpu_add_1(pcp, val) \ _pcp_protect(__percpu_add_case_8, pcp, val) #define this_cpu_add_2(pcp, val) \ --=20 2.36.1