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=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 4E558C2BB4D for ; Tue, 16 Mar 2021 01:55:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 37F8E6501C for ; Tue, 16 Mar 2021 01:55:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234449AbhCPBzV (ORCPT ); Mon, 15 Mar 2021 21:55:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58344 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234289AbhCPByi (ORCPT ); Mon, 15 Mar 2021 21:54:38 -0400 Received: from mail-qk1-x72e.google.com (mail-qk1-x72e.google.com [IPv6:2607:f8b0:4864:20::72e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 59029C061756; Mon, 15 Mar 2021 18:54:38 -0700 (PDT) Received: by mail-qk1-x72e.google.com with SMTP id 130so33771969qkh.11; Mon, 15 Mar 2021 18:54:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=HmPBP/xYFM2V4M5yRdhQkDM4FUGg/XThal+e+GFUzBk=; b=CwpoXqxqHqrp6zlSI120y5OeHkNFQDI8oz7Ipy5rhi2YE7yCxK1hspnToObvYoSwYb Kp2YUY6u4ZBSE/tvbVtuK0npraMc8N2R2RoNUPsZz82morZLQPUL/nq52PtpTMqohp2d /uH874bkN/YQHusSHrINv0rbUKr4dNfB9BdLbNC6HEeM64sXYZFbi7ZNiOIPmZasZQ8H wFDNAnAzuWjRTKFQiCnCQeLDyHU7JeUkbYTPmZTMtsMJvH9er+Wykinvv9k028F2gxIB JMRMV2duoeAhH4o1zvJQ8IK9JCdGyOJRem7x6SUboS3qevR/B/xQH76GEZGhGIDC1Tz/ OnqQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=HmPBP/xYFM2V4M5yRdhQkDM4FUGg/XThal+e+GFUzBk=; b=XN9pyloSgpWGGQ198DvKZlaUzzutqwtRAKje2FvK5Q3T+7QU8ABMK5I3NUI2W5ZHC9 DHUmBlx9KcfS4tqFqamSDxNQy+Oibealz75gE9/wwuypoO5daJLoaXcwXpPL733ryUEi DIgDrR9JzSFdaw9X3S3L2H8U1O6wZyRn3aj3jVAm0rKcOcA1l2t/oWEzI4urFvgFfMcT Fmd01b6WK0gVWRZhxtcUa0vyFp8/irUI459RK5RJOSdRvYoMb6R12QGlz0qsEPggvsyh +BIsL0QZn/tYTxQ9Xm9STwjXBIr6mb0PV8V6NuhhjxZyguix/phRJkTGgwPlmQbphOPT hWPA== X-Gm-Message-State: AOAM5316mee6V5SnUIZU16poVbaoXEn4DI6FB1fYaQTCBKzloRlewbg3 JTpQi+/DtrchL42Qem7eIM5DHEjIi60= X-Google-Smtp-Source: ABdhPJwLEl4mQiPpTM+fSuJlowv0KqoYrH87KhgizuTVmwKzzaibZiI8FSx20NGQaVHSO/71AUfXig== X-Received: by 2002:a37:270c:: with SMTP id n12mr28249750qkn.277.1615859677309; Mon, 15 Mar 2021 18:54:37 -0700 (PDT) Received: from localhost ([76.73.146.210]) by smtp.gmail.com with ESMTPSA id g21sm14268021qkk.72.2021.03.15.18.54.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 15 Mar 2021 18:54:37 -0700 (PDT) From: Yury Norov To: linux-kernel@vger.kernel.org Cc: Yury Norov , linux-m68k@lists.linux-m68k.org, linux-arch@vger.kernel.org, linux-sh@vger.kernel.org, Alexey Klimov , Andrew Morton , Andy Shevchenko , Arnd Bergmann , David Sterba , Dennis Zhou , Geert Uytterhoeven , Jianpeng Ma , Joe Perches , John Paul Adrian Glaubitz , Josh Poimboeuf , Rasmus Villemoes , Rich Felker , Stefano Brivio , Wei Yang , Wolfram Sang , Yoshinori Sato Subject: [PATCH 08/13] lib: inline _find_next_bit() wrappers Date: Mon, 15 Mar 2021 18:54:19 -0700 Message-Id: <20210316015424.1999082-9-yury.norov@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210316015424.1999082-1-yury.norov@gmail.com> References: <20210316015424.1999082-1-yury.norov@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org lib/find_bit.c declares five single-line wrappers for _find_next_bit(). We may turn those wrappers to inline functions. It eliminates unneeded function calls and opens room for compile-time optimizations. Signed-off-by: Yury Norov --- include/asm-generic/bitops/find.h | 28 ++++++++++++---- include/asm-generic/bitops/le.h | 17 +++++++--- lib/find_bit.c | 56 ++----------------------------- 3 files changed, 37 insertions(+), 64 deletions(-) diff --git a/include/asm-generic/bitops/find.h b/include/asm-generic/bitops/find.h index 9fdf21302fdf..7ad70dab8e93 100644 --- a/include/asm-generic/bitops/find.h +++ b/include/asm-generic/bitops/find.h @@ -2,6 +2,10 @@ #ifndef _ASM_GENERIC_BITOPS_FIND_H_ #define _ASM_GENERIC_BITOPS_FIND_H_ +extern unsigned long _find_next_bit(const unsigned long *addr1, + const unsigned long *addr2, unsigned long nbits, + unsigned long start, unsigned long invert, unsigned long le); + #ifndef find_next_bit /** * find_next_bit - find the next set bit in a memory region @@ -12,8 +16,12 @@ * Returns the bit number for the next set bit * If no bits are set, returns @size. */ -extern unsigned long find_next_bit(const unsigned long *addr, unsigned long - size, unsigned long offset); +static inline +unsigned long find_next_bit(const unsigned long *addr, unsigned long size, + unsigned long offset) +{ + return _find_next_bit(addr, NULL, size, offset, 0UL, 0); +} #endif #ifndef find_next_and_bit @@ -27,9 +35,13 @@ extern unsigned long find_next_bit(const unsigned long *addr, unsigned long * Returns the bit number for the next set bit * If no bits are set, returns @size. */ -extern unsigned long find_next_and_bit(const unsigned long *addr1, +static inline +unsigned long find_next_and_bit(const unsigned long *addr1, const unsigned long *addr2, unsigned long size, - unsigned long offset); + unsigned long offset) +{ + return _find_next_bit(addr1, addr2, size, offset, 0UL, 0); +} #endif #ifndef find_next_zero_bit @@ -42,8 +54,12 @@ extern unsigned long find_next_and_bit(const unsigned long *addr1, * Returns the bit number of the next zero bit * If no bits are zero, returns @size. */ -extern unsigned long find_next_zero_bit(const unsigned long *addr, unsigned - long size, unsigned long offset); +static inline +unsigned long find_next_zero_bit(const unsigned long *addr, unsigned long size, + unsigned long offset) +{ + return _find_next_bit(addr, NULL, size, offset, ~0UL, 0); +} #endif #ifdef CONFIG_GENERIC_FIND_FIRST_BIT diff --git a/include/asm-generic/bitops/le.h b/include/asm-generic/bitops/le.h index 188d3eba3ace..21305f6cea0b 100644 --- a/include/asm-generic/bitops/le.h +++ b/include/asm-generic/bitops/le.h @@ -2,6 +2,7 @@ #ifndef _ASM_GENERIC_BITOPS_LE_H_ #define _ASM_GENERIC_BITOPS_LE_H_ +#include #include #include @@ -32,13 +33,21 @@ static inline unsigned long find_first_zero_bit_le(const void *addr, #define BITOP_LE_SWIZZLE ((BITS_PER_LONG-1) & ~0x7) #ifndef find_next_zero_bit_le -extern unsigned long find_next_zero_bit_le(const void *addr, - unsigned long size, unsigned long offset); +static inline +unsigned long find_next_zero_bit_le(const void *addr, unsigned + long size, unsigned long offset) +{ + return _find_next_bit(addr, NULL, size, offset, ~0UL, 1); +} #endif #ifndef find_next_bit_le -extern unsigned long find_next_bit_le(const void *addr, - unsigned long size, unsigned long offset); +static inline +unsigned long find_next_bit_le(const void *addr, unsigned + long size, unsigned long offset) +{ + return _find_next_bit(addr, NULL, size, offset, 0UL, 1); +} #endif #ifndef find_first_zero_bit_le diff --git a/lib/find_bit.c b/lib/find_bit.c index 8c2a71a18793..2470ae390f3c 100644 --- a/lib/find_bit.c +++ b/lib/find_bit.c @@ -29,7 +29,7 @@ * searching it for one bits. * - The optional "addr2", which is anded with "addr1" if present. */ -static unsigned long _find_next_bit(const unsigned long *addr1, +unsigned long _find_next_bit(const unsigned long *addr1, const unsigned long *addr2, unsigned long nbits, unsigned long start, unsigned long invert, unsigned long le) { @@ -68,37 +68,7 @@ static unsigned long _find_next_bit(const unsigned long *addr1, return min(start + __ffs(tmp), nbits); } -#endif - -#ifndef find_next_bit -/* - * Find the next set bit in a memory region. - */ -unsigned long find_next_bit(const unsigned long *addr, unsigned long size, - unsigned long offset) -{ - return _find_next_bit(addr, NULL, size, offset, 0UL, 0); -} -EXPORT_SYMBOL(find_next_bit); -#endif - -#ifndef find_next_zero_bit -unsigned long find_next_zero_bit(const unsigned long *addr, unsigned long size, - unsigned long offset) -{ - return _find_next_bit(addr, NULL, size, offset, ~0UL, 0); -} -EXPORT_SYMBOL(find_next_zero_bit); -#endif - -#if !defined(find_next_and_bit) -unsigned long find_next_and_bit(const unsigned long *addr1, - const unsigned long *addr2, unsigned long size, - unsigned long offset) -{ - return _find_next_bit(addr1, addr2, size, offset, 0UL, 0); -} -EXPORT_SYMBOL(find_next_and_bit); +EXPORT_SYMBOL(_find_next_bit); #endif #ifndef find_first_bit @@ -157,28 +127,6 @@ unsigned long find_last_bit(const unsigned long *addr, unsigned long size) EXPORT_SYMBOL(find_last_bit); #endif -#ifdef __BIG_ENDIAN - -#ifndef find_next_zero_bit_le -unsigned long find_next_zero_bit_le(const void *addr, unsigned - long size, unsigned long offset) -{ - return _find_next_bit(addr, NULL, size, offset, ~0UL, 1); -} -EXPORT_SYMBOL(find_next_zero_bit_le); -#endif - -#ifndef find_next_bit_le -unsigned long find_next_bit_le(const void *addr, unsigned - long size, unsigned long offset) -{ - return _find_next_bit(addr, NULL, size, offset, 0UL, 1); -} -EXPORT_SYMBOL(find_next_bit_le); -#endif - -#endif /* __BIG_ENDIAN */ - unsigned long find_next_clump8(unsigned long *clump, const unsigned long *addr, unsigned long size, unsigned long offset) { -- 2.25.1