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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 90964C433F5 for ; Sat, 18 Dec 2021 21:20:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234311AbhLRVUX (ORCPT ); Sat, 18 Dec 2021 16:20:23 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56182 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234302AbhLRVUW (ORCPT ); Sat, 18 Dec 2021 16:20:22 -0500 Received: from mail-oo1-xc33.google.com (mail-oo1-xc33.google.com [IPv6:2607:f8b0:4864:20::c33]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AFE6EC061574; Sat, 18 Dec 2021 13:20:21 -0800 (PST) Received: by mail-oo1-xc33.google.com with SMTP id w15-20020a4a9d0f000000b002c5cfa80e84so1843697ooj.5; Sat, 18 Dec 2021 13:20:21 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:subject:date:message-id:in-reply-to:references:mime-version :content-transfer-encoding; bh=Z2tvdbF6REb1vBF1soXoDEIHAExTZD83ljtvXFSjKwo=; b=emXGoF/rqz2kZ1ppkVCvpVwnlzRGfpHvB6fCjdgXgq4mWi4taNltzT/8wcLQq66dbk MD2zDykqS6XJaQ5PU2HVINr4Hy6yCA5bYv6gpPBvg9v3XheXHY+8l+yeCmhX2tga4gVQ sTew+4Ce+CJk3e/yVOV0JvK+IRua38r6JmY0W0m2iG7AvTEFJPzEdJgJthm8SUSs/HSu +2y2hMZR9kLSjfG1dQSz0Un8nNh3r481BC0sqINll4Wfg/BF12V/L2oAmdDVwhPToLvH OP+x58qnTe8/1kAkfYhKXTLFTwToKojcYG+btHtZE0qvbhco3tOTmSCXQ29ee1Ng0z1Y 3GQg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=Z2tvdbF6REb1vBF1soXoDEIHAExTZD83ljtvXFSjKwo=; b=PjV1OGZZ2DhUlOZQckPL9o6gzyAETB/ahNyDdmI78tg6/ug9wx+jkt3z/sfcy21PG1 f2/ZoXnvhWMccgeN3twpPSS51gt2EXj3hlNxLRUXNgtnZrdxmUdcUUUsAdDjOzHK/OvW ieEYUr298r9TT72bLuFXCYIgWXkEFja1f3k4Op4IMbwi00zccJLphW2boaPrcWNIHadX u8/qjaK4GjiPXVURZ5KIHZiY27TaB3fOySBHjH5/41HENT+4/JBEVUTT+QT+6gP93/30 VX1w4zbraCPfoImGffTywiI8CH3+Q4foqDTfJ/CsHJN7DFcNOinNjMKIwIg1dU4PejDa 85+g== X-Gm-Message-State: AOAM533fIUvR5LigBGiLvN6czPwXKHddkynIo5rwRrL4oiWcPwUFOeU7 pbHuM+oxM9UeIsyi4j4N7ucoKD/TIwitOA== X-Google-Smtp-Source: ABdhPJwPbo0K0G4ak9o4in4lTp9662eXAkNuBO+m2YfWhJBYOSEs8AJNY3EOrOHmvQuk+mj1mPzKcQ== X-Received: by 2002:a4a:8701:: with SMTP id z1mr6056463ooh.68.1639862420605; Sat, 18 Dec 2021 13:20:20 -0800 (PST) Received: from localhost (searspoint.nvidia.com. [216.228.112.21]) by smtp.gmail.com with ESMTPSA id x13sm2332785otr.58.2021.12.18.13.20.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 18 Dec 2021 13:20:20 -0800 (PST) From: Yury Norov To: linux-kernel@vger.kernel.org, Yury Norov , "James E.J. Bottomley" , "Martin K. Petersen" , =?UTF-8?q?Micha=C5=82=20Miros=C5=82aw?= , "Paul E. McKenney" , "Rafael J. Wysocki" , Alexander Shishkin , Alexey Klimov , Amitkumar Karwar , Andi Kleen , Andrew Lunn , Andrew Morton , Andy Gross , Andy Lutomirski , Andy Shevchenko , Anup Patel , Ard Biesheuvel , Arnaldo Carvalho de Melo , Arnd Bergmann , Borislav Petkov , Catalin Marinas , Christoph Hellwig , Christoph Lameter , Daniel Vetter , Dave Hansen , David Airlie , David Laight , Dennis Zhou , Emil Renner Berthing , Geert Uytterhoeven , Geetha sowjanya , Greg Kroah-Hartman , Guo Ren , Hans de Goede , Heiko Carstens , Ian Rogers , Ingo Molnar , Jakub Kicinski , Jason Wessel , Jens Axboe , Jiri Olsa , Joe Perches , Jonathan Cameron , Juri Lelli , Kees Cook , Krzysztof Kozlowski , Lee Jones , Marc Zyngier , Marcin Wojtas , Mark Gross , Mark Rutland , Matti Vaittinen , Mauro Carvalho Chehab , Mel Gorman , Michael Ellerman , Mike Marciniszyn , Nicholas Piggin , Palmer Dabbelt , Peter Zijlstra , Petr Mladek , Randy Dunlap , Rasmus Villemoes , Russell King , Saeed Mahameed , Sagi Grimberg , Sergey Senozhatsky , Solomon Peachy , Stephen Boyd , Stephen Rothwell , Steven Rostedt , Subbaraya Sundeep , Sudeep Holla , Sunil Goutham , Tariq Toukan , Tejun Heo , Thomas Bogendoerfer , Thomas Gleixner , Ulf Hansson , Vincent Guittot , Vineet Gupta , Viresh Kumar , Vivien Didelot , Vlastimil Babka , Will Deacon , bcm-kernel-feedback-list@broadcom.com, kvm@vger.kernel.org, linux-alpha@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-crypto@vger.kernel.org, linux-csky@vger.kernel.org, linux-ia64@vger.kernel.org, linux-mips@vger.kernel.org, linux-mm@kvack.org, linux-perf-users@vger.kernel.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-snps-arc@lists.infradead.org, linuxppc-dev@lists.ozlabs.org Subject: [PATCH 01/17] all: don't use bitmap_weight() where possible Date: Sat, 18 Dec 2021 13:19:57 -0800 Message-Id: <20211218212014.1315894-2-yury.norov@gmail.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20211218212014.1315894-1-yury.norov@gmail.com> References: <20211218212014.1315894-1-yury.norov@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org Don't call bitmap_weight() if the following code can get by without it. Signed-off-by: Yury Norov --- drivers/net/dsa/b53/b53_common.c | 6 +----- drivers/net/ethernet/broadcom/bcmsysport.c | 6 +----- drivers/thermal/intel/intel_powerclamp.c | 9 +++------ 3 files changed, 5 insertions(+), 16 deletions(-) diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c index 3867f3d4545f..9a10d80125d9 100644 --- a/drivers/net/dsa/b53/b53_common.c +++ b/drivers/net/dsa/b53/b53_common.c @@ -1620,12 +1620,8 @@ static int b53_arl_read(struct b53_device *dev, u64 mac, return 0; } - if (bitmap_weight(free_bins, dev->num_arl_bins) == 0) - return -ENOSPC; - *idx = find_first_bit(free_bins, dev->num_arl_bins); - - return -ENOENT; + return *idx >= dev->num_arl_bins ? -ENOSPC : -ENOENT; } static int b53_arl_op(struct b53_device *dev, int op, int port, diff --git a/drivers/net/ethernet/broadcom/bcmsysport.c b/drivers/net/ethernet/broadcom/bcmsysport.c index 40933bf5a710..241696fdc6c7 100644 --- a/drivers/net/ethernet/broadcom/bcmsysport.c +++ b/drivers/net/ethernet/broadcom/bcmsysport.c @@ -2177,13 +2177,9 @@ static int bcm_sysport_rule_set(struct bcm_sysport_priv *priv, if (nfc->fs.ring_cookie != RX_CLS_FLOW_WAKE) return -EOPNOTSUPP; - /* All filters are already in use, we cannot match more rules */ - if (bitmap_weight(priv->filters, RXCHK_BRCM_TAG_MAX) == - RXCHK_BRCM_TAG_MAX) - return -ENOSPC; - index = find_first_zero_bit(priv->filters, RXCHK_BRCM_TAG_MAX); if (index >= RXCHK_BRCM_TAG_MAX) + /* All filters are already in use, we cannot match more rules */ return -ENOSPC; /* Location is the classification ID, and index is the position diff --git a/drivers/thermal/intel/intel_powerclamp.c b/drivers/thermal/intel/intel_powerclamp.c index 14256421d98c..c841ab37e7c6 100644 --- a/drivers/thermal/intel/intel_powerclamp.c +++ b/drivers/thermal/intel/intel_powerclamp.c @@ -556,12 +556,9 @@ static void end_power_clamp(void) * stop faster. */ clamping = false; - if (bitmap_weight(cpu_clamping_mask, num_possible_cpus())) { - for_each_set_bit(i, cpu_clamping_mask, num_possible_cpus()) { - pr_debug("clamping worker for cpu %d alive, destroy\n", - i); - stop_power_clamp_worker(i); - } + for_each_set_bit(i, cpu_clamping_mask, num_possible_cpus()) { + pr_debug("clamping worker for cpu %d alive, destroy\n", i); + stop_power_clamp_worker(i); } } -- 2.30.2 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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E6DBBC4167B for ; Sat, 18 Dec 2021 21:20:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Cc:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=RHQFQROof23rWU+56TQpFo2gtiuBcGJGMCjiAVgxFPw=; b=MvVtDyRPVO81cf +Yw5BvyAJYsy641dNqx/KMquL+iryQqnRv7LPkcOT3DPIkmoeg7/oo1okNJgF6DgTojI1ESLhBA8C PviH7OU7mZvHQpBGSO4LTyk85zIb1iROhsC17XD/n6Yob3ANmKt42uXb0Gx1m4Fp58NJEbvcePubE q1FqdipSoxsAAKjn43V7qp8M48rSGBukKMVl9J7aBdlp454sQd/I/JbHiM0SySAct2OHhj+LEh+q6 Wyd1pd1buPgTGNKFZoKCpClor0Nbs+hPwuhZ+vx38icPMWk5izVJRbo3cn8KZjScz2vnrTCdmIdIb zEYH98xwrtX4n28/NTPw==; 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[216.228.112.21]) by smtp.gmail.com with ESMTPSA id x13sm2332785otr.58.2021.12.18.13.20.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 18 Dec 2021 13:20:20 -0800 (PST) From: Yury Norov To: linux-kernel@vger.kernel.org, Yury Norov , "James E.J. Bottomley" , "Martin K. Petersen" , =?UTF-8?q?Micha=C5=82=20Miros=C5=82aw?= , "Paul E. McKenney" , "Rafael J. Wysocki" , Alexander Shishkin , Alexey Klimov , Amitkumar Karwar , Andi Kleen , Andrew Lunn , Andrew Morton , Andy Gross , Andy Lutomirski , Andy Shevchenko , Anup Patel , Ard Biesheuvel , Arnaldo Carvalho de Melo , Arnd Bergmann , Borislav Petkov , Catalin Marinas , Christoph Hellwig , Christoph Lameter , Daniel Vetter , Dave Hansen , David Airlie , David Laight , Dennis Zhou , Emil Renner Berthing , Geert Uytterhoeven , Geetha sowjanya , Greg Kroah-Hartman , Guo Ren , Hans de Goede , Heiko Carstens , Ian Rogers , Ingo Molnar , Jakub Kicinski , Jason Wessel , Jens Axboe , Jiri Olsa , Joe Perches , Jonathan Cameron , Juri Lelli , Kees Cook , Krzysztof Kozlowski , Lee Jones , Marc Zyngier , Marcin Wojtas , Mark Gross , Mark Rutland , Matti Vaittinen , Mauro Carvalho Chehab , Mel Gorman , Michael Ellerman , Mike Marciniszyn , Nicholas Piggin , Palmer Dabbelt , Peter Zijlstra , Petr Mladek , Randy Dunlap , Rasmus Villemoes , Russell King , Saeed Mahameed , Sagi Grimberg , Sergey Senozhatsky , Solomon Peachy , Stephen Boyd , Stephen Rothwell , Steven Rostedt , Subbaraya Sundeep , Sudeep Holla , Sunil Goutham , Tariq Toukan , Tejun Heo , Thomas Bogendoerfer , Thomas Gleixner , Ulf Hansson , Vincent Guittot , Vineet Gupta , Viresh Kumar , Vivien Didelot , Vlastimil Babka , Will Deacon , bcm-kernel-feedback-list@broadcom.com, kvm@vger.kernel.org, linux-alpha@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-crypto@vger.kernel.org, linux-csky@vger.kernel.org, linux-ia64@vger.kernel.org, linux-mips@vger.kernel.org, linux-mm@kvack.org, linux-perf-users@vger.kernel.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-snps-arc@lists.infradead.org, linuxppc-dev@lists.ozlabs.org Subject: [PATCH 01/17] all: don't use bitmap_weight() where possible Date: Sat, 18 Dec 2021 13:19:57 -0800 Message-Id: <20211218212014.1315894-2-yury.norov@gmail.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20211218212014.1315894-1-yury.norov@gmail.com> References: <20211218212014.1315894-1-yury.norov@gmail.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211218_132021_745925_D75DA5FC X-CRM114-Status: GOOD ( 19.08 ) X-BeenThere: linux-snps-arc@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux on Synopsys ARC Processors List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-snps-arc" Errors-To: linux-snps-arc-bounces+linux-snps-arc=archiver.kernel.org@lists.infradead.org Don't call bitmap_weight() if the following code can get by without it. Signed-off-by: Yury Norov --- drivers/net/dsa/b53/b53_common.c | 6 +----- drivers/net/ethernet/broadcom/bcmsysport.c | 6 +----- drivers/thermal/intel/intel_powerclamp.c | 9 +++------ 3 files changed, 5 insertions(+), 16 deletions(-) diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c index 3867f3d4545f..9a10d80125d9 100644 --- a/drivers/net/dsa/b53/b53_common.c +++ b/drivers/net/dsa/b53/b53_common.c @@ -1620,12 +1620,8 @@ static int b53_arl_read(struct b53_device *dev, u64 mac, return 0; } - if (bitmap_weight(free_bins, dev->num_arl_bins) == 0) - return -ENOSPC; - *idx = find_first_bit(free_bins, dev->num_arl_bins); - - return -ENOENT; + return *idx >= dev->num_arl_bins ? -ENOSPC : -ENOENT; } static int b53_arl_op(struct b53_device *dev, int op, int port, diff --git a/drivers/net/ethernet/broadcom/bcmsysport.c b/drivers/net/ethernet/broadcom/bcmsysport.c index 40933bf5a710..241696fdc6c7 100644 --- a/drivers/net/ethernet/broadcom/bcmsysport.c +++ b/drivers/net/ethernet/broadcom/bcmsysport.c @@ -2177,13 +2177,9 @@ static int bcm_sysport_rule_set(struct bcm_sysport_priv *priv, if (nfc->fs.ring_cookie != RX_CLS_FLOW_WAKE) return -EOPNOTSUPP; - /* All filters are already in use, we cannot match more rules */ - if (bitmap_weight(priv->filters, RXCHK_BRCM_TAG_MAX) == - RXCHK_BRCM_TAG_MAX) - return -ENOSPC; - index = find_first_zero_bit(priv->filters, RXCHK_BRCM_TAG_MAX); if (index >= RXCHK_BRCM_TAG_MAX) + /* All filters are already in use, we cannot match more rules */ return -ENOSPC; /* Location is the classification ID, and index is the position diff --git a/drivers/thermal/intel/intel_powerclamp.c b/drivers/thermal/intel/intel_powerclamp.c index 14256421d98c..c841ab37e7c6 100644 --- a/drivers/thermal/intel/intel_powerclamp.c +++ b/drivers/thermal/intel/intel_powerclamp.c @@ -556,12 +556,9 @@ static void end_power_clamp(void) * stop faster. */ clamping = false; - if (bitmap_weight(cpu_clamping_mask, num_possible_cpus())) { - for_each_set_bit(i, cpu_clamping_mask, num_possible_cpus()) { - pr_debug("clamping worker for cpu %d alive, destroy\n", - i); - stop_power_clamp_worker(i); - } + for_each_set_bit(i, cpu_clamping_mask, num_possible_cpus()) { + pr_debug("clamping worker for cpu %d alive, destroy\n", i); + stop_power_clamp_worker(i); } } -- 2.30.2 _______________________________________________ linux-snps-arc mailing list linux-snps-arc@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-snps-arc 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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D8FAFC433F5 for ; Sat, 18 Dec 2021 21:20:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Cc:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; 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[216.228.112.21]) by smtp.gmail.com with ESMTPSA id x13sm2332785otr.58.2021.12.18.13.20.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 18 Dec 2021 13:20:20 -0800 (PST) From: Yury Norov To: linux-kernel@vger.kernel.org, Yury Norov , "James E.J. Bottomley" , "Martin K. Petersen" , =?UTF-8?q?Micha=C5=82=20Miros=C5=82aw?= , "Paul E. McKenney" , "Rafael J. Wysocki" , Alexander Shishkin , Alexey Klimov , Amitkumar Karwar , Andi Kleen , Andrew Lunn , Andrew Morton , Andy Gross , Andy Lutomirski , Andy Shevchenko , Anup Patel , Ard Biesheuvel , Arnaldo Carvalho de Melo , Arnd Bergmann , Borislav Petkov , Catalin Marinas , Christoph Hellwig , Christoph Lameter , Daniel Vetter , Dave Hansen , David Airlie , David Laight , Dennis Zhou , Emil Renner Berthing , Geert Uytterhoeven , Geetha sowjanya , Greg Kroah-Hartman , Guo Ren , Hans de Goede , Heiko Carstens , Ian Rogers , Ingo Molnar , Jakub Kicinski , Jason Wessel , Jens Axboe , Jiri Olsa , Joe Perches , Jonathan Cameron , Juri Lelli , Kees Cook , Krzysztof Kozlowski , Lee Jones , Marc Zyngier , Marcin Wojtas , Mark Gross , Mark Rutland , Matti Vaittinen , Mauro Carvalho Chehab , Mel Gorman , Michael Ellerman , Mike Marciniszyn , Nicholas Piggin , Palmer Dabbelt , Peter Zijlstra , Petr Mladek , Randy Dunlap , Rasmus Villemoes , Russell King , Saeed Mahameed , Sagi Grimberg , Sergey Senozhatsky , Solomon Peachy , Stephen Boyd , Stephen Rothwell , Steven Rostedt , Subbaraya Sundeep , Sudeep Holla , Sunil Goutham , Tariq Toukan , Tejun Heo , Thomas Bogendoerfer , Thomas Gleixner , Ulf Hansson , Vincent Guittot , Vineet Gupta , Viresh Kumar , Vivien Didelot , Vlastimil Babka , Will Deacon , bcm-kernel-feedback-list@broadcom.com, kvm@vger.kernel.org, linux-alpha@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-crypto@vger.kernel.org, linux-csky@vger.kernel.org, linux-ia64@vger.kernel.org, linux-mips@vger.kernel.org, linux-mm@kvack.org, linux-perf-users@vger.kernel.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-snps-arc@lists.infradead.org, linuxppc-dev@lists.ozlabs.org Subject: [PATCH 01/17] all: don't use bitmap_weight() where possible Date: Sat, 18 Dec 2021 13:19:57 -0800 Message-Id: <20211218212014.1315894-2-yury.norov@gmail.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20211218212014.1315894-1-yury.norov@gmail.com> References: <20211218212014.1315894-1-yury.norov@gmail.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211218_132021_745925_D75DA5FC X-CRM114-Status: GOOD ( 19.08 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org Don't call bitmap_weight() if the following code can get by without it. Signed-off-by: Yury Norov --- drivers/net/dsa/b53/b53_common.c | 6 +----- drivers/net/ethernet/broadcom/bcmsysport.c | 6 +----- drivers/thermal/intel/intel_powerclamp.c | 9 +++------ 3 files changed, 5 insertions(+), 16 deletions(-) diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c index 3867f3d4545f..9a10d80125d9 100644 --- a/drivers/net/dsa/b53/b53_common.c +++ b/drivers/net/dsa/b53/b53_common.c @@ -1620,12 +1620,8 @@ static int b53_arl_read(struct b53_device *dev, u64 mac, return 0; } - if (bitmap_weight(free_bins, dev->num_arl_bins) == 0) - return -ENOSPC; - *idx = find_first_bit(free_bins, dev->num_arl_bins); - - return -ENOENT; + return *idx >= dev->num_arl_bins ? -ENOSPC : -ENOENT; } static int b53_arl_op(struct b53_device *dev, int op, int port, diff --git a/drivers/net/ethernet/broadcom/bcmsysport.c b/drivers/net/ethernet/broadcom/bcmsysport.c index 40933bf5a710..241696fdc6c7 100644 --- a/drivers/net/ethernet/broadcom/bcmsysport.c +++ b/drivers/net/ethernet/broadcom/bcmsysport.c @@ -2177,13 +2177,9 @@ static int bcm_sysport_rule_set(struct bcm_sysport_priv *priv, if (nfc->fs.ring_cookie != RX_CLS_FLOW_WAKE) return -EOPNOTSUPP; - /* All filters are already in use, we cannot match more rules */ - if (bitmap_weight(priv->filters, RXCHK_BRCM_TAG_MAX) == - RXCHK_BRCM_TAG_MAX) - return -ENOSPC; - index = find_first_zero_bit(priv->filters, RXCHK_BRCM_TAG_MAX); if (index >= RXCHK_BRCM_TAG_MAX) + /* All filters are already in use, we cannot match more rules */ return -ENOSPC; /* Location is the classification ID, and index is the position diff --git a/drivers/thermal/intel/intel_powerclamp.c b/drivers/thermal/intel/intel_powerclamp.c index 14256421d98c..c841ab37e7c6 100644 --- a/drivers/thermal/intel/intel_powerclamp.c +++ b/drivers/thermal/intel/intel_powerclamp.c @@ -556,12 +556,9 @@ static void end_power_clamp(void) * stop faster. */ clamping = false; - if (bitmap_weight(cpu_clamping_mask, num_possible_cpus())) { - for_each_set_bit(i, cpu_clamping_mask, num_possible_cpus()) { - pr_debug("clamping worker for cpu %d alive, destroy\n", - i); - stop_power_clamp_worker(i); - } + for_each_set_bit(i, cpu_clamping_mask, num_possible_cpus()) { + pr_debug("clamping worker for cpu %d alive, destroy\n", i); + stop_power_clamp_worker(i); } } -- 2.30.2 _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv From mboxrd@z Thu Jan 1 00:00:00 1970 From: Yury Norov Subject: [PATCH 01/17] all: don't use bitmap_weight() where possible Date: Sat, 18 Dec 2021 13:19:57 -0800 Message-ID: <20211218212014.1315894-2-yury.norov@gmail.com> References: <20211218212014.1315894-1-yury.norov@gmail.com> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Return-path: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:subject:date:message-id:in-reply-to:references:mime-version :content-transfer-encoding; bh=Z2tvdbF6REb1vBF1soXoDEIHAExTZD83ljtvXFSjKwo=; b=emXGoF/rqz2kZ1ppkVCvpVwnlzRGfpHvB6fCjdgXgq4mWi4taNltzT/8wcLQq66dbk MD2zDykqS6XJaQ5PU2HVINr4Hy6yCA5bYv6gpPBvg9v3XheXHY+8l+yeCmhX2tga4gVQ sTew+4Ce+CJk3e/yVOV0JvK+IRua38r6JmY0W0m2iG7AvTEFJPzEdJgJthm8SUSs/HSu +2y2hMZR9kLSjfG1dQSz0Un8nNh3r481BC0sqINll4Wfg/BF12V/L2oAmdDVwhPToLvH OP+x58qnTe8/1kAkfYhKXTLFTwToKojcYG+btHtZE0qvbhco3tOTmSCXQ29ee1Ng0z1Y 3GQg== In-Reply-To: <20211218212014.1315894-1-yury.norov@gmail.com> List-ID: Content-Type: text/plain; charset="us-ascii" To: linux-kernel@vger.kernel.org, Yury Norov , "James E.J. Bottomley" , "Martin K. Petersen" , =?UTF-8?q?Micha=C5=82=20Miros=C5=82aw?= , "Paul E. McKenney" , "Rafael J. Wysocki" , Alexander Shishkin , Alexey Klimov , Amitkumar Karwar , Andi Kleen , Andrew Lunn , Andrew Morton , Andy Gross , Andy Lutomirski , Andy Shevchenko , Anup Patel , Ard Biesheuvel , Arnaldo Carvalho de Melo Don't call bitmap_weight() if the following code can get by without it. Signed-off-by: Yury Norov --- drivers/net/dsa/b53/b53_common.c | 6 +----- drivers/net/ethernet/broadcom/bcmsysport.c | 6 +----- drivers/thermal/intel/intel_powerclamp.c | 9 +++------ 3 files changed, 5 insertions(+), 16 deletions(-) diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c index 3867f3d4545f..9a10d80125d9 100644 --- a/drivers/net/dsa/b53/b53_common.c +++ b/drivers/net/dsa/b53/b53_common.c @@ -1620,12 +1620,8 @@ static int b53_arl_read(struct b53_device *dev, u64 mac, return 0; } - if (bitmap_weight(free_bins, dev->num_arl_bins) == 0) - return -ENOSPC; - *idx = find_first_bit(free_bins, dev->num_arl_bins); - - return -ENOENT; + return *idx >= dev->num_arl_bins ? -ENOSPC : -ENOENT; } static int b53_arl_op(struct b53_device *dev, int op, int port, diff --git a/drivers/net/ethernet/broadcom/bcmsysport.c b/drivers/net/ethernet/broadcom/bcmsysport.c index 40933bf5a710..241696fdc6c7 100644 --- a/drivers/net/ethernet/broadcom/bcmsysport.c +++ b/drivers/net/ethernet/broadcom/bcmsysport.c @@ -2177,13 +2177,9 @@ static int bcm_sysport_rule_set(struct bcm_sysport_priv *priv, if (nfc->fs.ring_cookie != RX_CLS_FLOW_WAKE) return -EOPNOTSUPP; - /* All filters are already in use, we cannot match more rules */ - if (bitmap_weight(priv->filters, RXCHK_BRCM_TAG_MAX) == - RXCHK_BRCM_TAG_MAX) - return -ENOSPC; - index = find_first_zero_bit(priv->filters, RXCHK_BRCM_TAG_MAX); if (index >= RXCHK_BRCM_TAG_MAX) + /* All filters are already in use, we cannot match more rules */ return -ENOSPC; /* Location is the classification ID, and index is the position diff --git a/drivers/thermal/intel/intel_powerclamp.c b/drivers/thermal/intel/intel_powerclamp.c index 14256421d98c..c841ab37e7c6 100644 --- a/drivers/thermal/intel/intel_powerclamp.c +++ b/drivers/thermal/intel/intel_powerclamp.c @@ -556,12 +556,9 @@ static void end_power_clamp(void) * stop faster. */ clamping = false; - if (bitmap_weight(cpu_clamping_mask, num_possible_cpus())) { - for_each_set_bit(i, cpu_clamping_mask, num_possible_cpus()) { - pr_debug("clamping worker for cpu %d alive, destroy\n", - i); - stop_power_clamp_worker(i); - } + for_each_set_bit(i, cpu_clamping_mask, num_possible_cpus()) { + pr_debug("clamping worker for cpu %d alive, destroy\n", i); + stop_power_clamp_worker(i); } } -- 2.30.2