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[24.129.28.254]) by smtp.gmail.com with ESMTPSA id 3f1490d57ef6-e537cbeba44sm5051923276.7.2024.12.28.10.50.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 28 Dec 2024 10:50:02 -0800 (PST) From: Yury Norov To: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, netdev@vger.kernel.org, virtualization@lists.linux.dev, linux-nvme@lists.infradead.org, linux-hyperv@vger.kernel.org, linux-pci@vger.kernel.org, linux-scsi@vger.kernel.org, linux-crypto@vger.kernel.org, Michael Ellerman , Nicholas Piggin , Christophe Leroy , Naveen N Rao , Madhavan Srinivasan , Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Christian Borntraeger , Sven Schnelle , Haren Myneni , Rick Lindsley , Nick Child , Thomas Falcon , Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , "Michael S. Tsirkin" , Jason Wang , Xuan Zhuo , =?utf-8?q?Eugenio_P=C3=A9rez?= , Keith Busch , Jens Axboe , Christoph Hellwig , Sagi Grimberg , "K. Y. Srinivasan" , Haiyang Zhang , Wei Liu , Dexuan Cui , Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy=C5=84ski?= , Manivannan Sadhasivam , Rob Herring , Bjorn Helgaas , James Smart , Dick Kennedy , "James E.J. Bottomley" , "Martin K. Petersen" , Yury Norov , Rasmus Villemoes , Matt Wu , Steffen Klassert , Daniel Jordan , Andrew Morton , Greg Kurz , Peter Xu , Shrikanth Hegde , Hendrik Brueckner Subject: [PATCH 05/14] cpumask: deprecate cpumask_next_wrap() Date: Sat, 28 Dec 2024 10:49:37 -0800 Message-ID: <20241228184949.31582-6-yury.norov@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241228184949.31582-1-yury.norov@gmail.com> References: <20241228184949.31582-1-yury.norov@gmail.com> Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 The next patche aligns implementation of cpumask_next_wrap() with the generic version in find.h which changes function signature. To make the transition smooth, this patch deprecates current implementation by adding an _old suffix. The following patches switch current users to the new implementation one by one. No functional changes were intended. Signed-off-by: Yury Norov --- arch/s390/kernel/processor.c | 2 +- drivers/nvme/host/tcp.c | 2 +- drivers/pci/controller/pci-hyperv.c | 2 +- drivers/scsi/lpfc/lpfc_init.c | 2 +- include/linux/cpumask.h | 4 ++-- kernel/padata.c | 2 +- lib/cpumask.c | 6 +++--- 7 files changed, 10 insertions(+), 10 deletions(-) diff --git a/arch/s390/kernel/processor.c b/arch/s390/kernel/processor.c index 5ce9a795a0fe..42ca61909030 100644 --- a/arch/s390/kernel/processor.c +++ b/arch/s390/kernel/processor.c @@ -72,7 +72,7 @@ void notrace stop_machine_yield(const struct cpumask *cpumask) this_cpu = smp_processor_id(); if (__this_cpu_inc_return(cpu_relax_retry) >= spin_retry) { __this_cpu_write(cpu_relax_retry, 0); - cpu = cpumask_next_wrap(this_cpu, cpumask, this_cpu, false); + cpu = cpumask_next_wrap_old(this_cpu, cpumask, this_cpu, false); if (cpu >= nr_cpu_ids) return; if (arch_vcpu_is_preempted(cpu)) diff --git a/drivers/nvme/host/tcp.c b/drivers/nvme/host/tcp.c index 28c76a3e1bd2..054904376c3c 100644 --- a/drivers/nvme/host/tcp.c +++ b/drivers/nvme/host/tcp.c @@ -1578,7 +1578,7 @@ static void nvme_tcp_set_queue_io_cpu(struct nvme_tcp_queue *queue) if (wq_unbound) queue->io_cpu = WORK_CPU_UNBOUND; else - queue->io_cpu = cpumask_next_wrap(n - 1, cpu_online_mask, -1, false); + queue->io_cpu = cpumask_next_wrap_old(n - 1, cpu_online_mask, -1, false); } static void nvme_tcp_tls_done(void *data, int status, key_serial_t pskid) diff --git a/drivers/pci/controller/pci-hyperv.c b/drivers/pci/controller/pci-hyperv.c index cdd5be16021d..86d1c2be8eb5 100644 --- a/drivers/pci/controller/pci-hyperv.c +++ b/drivers/pci/controller/pci-hyperv.c @@ -1757,7 +1757,7 @@ static int hv_compose_multi_msi_req_get_cpu(void) spin_lock_irqsave(&multi_msi_cpu_lock, flags); - cpu_next = cpumask_next_wrap(cpu_next, cpu_online_mask, nr_cpu_ids, + cpu_next = cpumask_next_wrap_old(cpu_next, cpu_online_mask, nr_cpu_ids, false); cpu = cpu_next; diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c index 7f57397d91a9..31622fb0614a 100644 --- a/drivers/scsi/lpfc/lpfc_init.c +++ b/drivers/scsi/lpfc/lpfc_init.c @@ -12876,7 +12876,7 @@ lpfc_irq_rebalance(struct lpfc_hba *phba, unsigned int cpu, bool offline) if (offline) { /* Find next online CPU on original mask */ - cpu_next = cpumask_next_wrap(cpu, orig_mask, cpu, true); + cpu_next = cpumask_next_wrap_old(cpu, orig_mask, cpu, true); cpu_select = lpfc_next_online_cpu(orig_mask, cpu_next); /* Found a valid CPU */ diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h index 30042351f15f..b267a4f6a917 100644 --- a/include/linux/cpumask.h +++ b/include/linux/cpumask.h @@ -296,7 +296,7 @@ unsigned int cpumask_next_and(int n, const struct cpumask *src1p, #if NR_CPUS == 1 static __always_inline -unsigned int cpumask_next_wrap(int n, const struct cpumask *mask, int start, bool wrap) +unsigned int cpumask_next_wrap_old(int n, const struct cpumask *mask, int start, bool wrap) { cpumask_check(start); if (n != -1) @@ -312,7 +312,7 @@ unsigned int cpumask_next_wrap(int n, const struct cpumask *mask, int start, boo return cpumask_first(mask); } #else -unsigned int __pure cpumask_next_wrap(int n, const struct cpumask *mask, int start, bool wrap); +unsigned int __pure cpumask_next_wrap_old(int n, const struct cpumask *mask, int start, bool wrap); #endif /** diff --git a/kernel/padata.c b/kernel/padata.c index d51bbc76b227..454ff2fca40b 100644 --- a/kernel/padata.c +++ b/kernel/padata.c @@ -274,7 +274,7 @@ static struct padata_priv *padata_find_next(struct parallel_data *pd, if (remove_object) { list_del_init(&padata->list); ++pd->processed; - pd->cpu = cpumask_next_wrap(cpu, pd->cpumask.pcpu, -1, false); + pd->cpu = cpumask_next_wrap_old(cpu, pd->cpumask.pcpu, -1, false); } spin_unlock(&reorder->lock); diff --git a/lib/cpumask.c b/lib/cpumask.c index e77ee9d46f71..c9a9b451772a 100644 --- a/lib/cpumask.c +++ b/lib/cpumask.c @@ -8,7 +8,7 @@ #include /** - * cpumask_next_wrap - helper to implement for_each_cpu_wrap + * cpumask_next_wrap_old - helper to implement for_each_cpu_wrap * @n: the cpu prior to the place to search * @mask: the cpumask pointer * @start: the start point of the iteration @@ -19,7 +19,7 @@ * Note: the @wrap argument is required for the start condition when * we cannot assume @start is set in @mask. */ -unsigned int cpumask_next_wrap(int n, const struct cpumask *mask, int start, bool wrap) +unsigned int cpumask_next_wrap_old(int n, const struct cpumask *mask, int start, bool wrap) { unsigned int next; @@ -37,7 +37,7 @@ unsigned int cpumask_next_wrap(int n, const struct cpumask *mask, int start, boo return next; 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[24.129.28.254]) by smtp.gmail.com with ESMTPSA id 3f1490d57ef6-e537cf73675sm5102193276.51.2024.12.28.10.50.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 28 Dec 2024 10:50:03 -0800 (PST) From: Yury Norov To: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, netdev@vger.kernel.org, virtualization@lists.linux.dev, linux-nvme@lists.infradead.org, linux-hyperv@vger.kernel.org, linux-pci@vger.kernel.org, linux-scsi@vger.kernel.org, linux-crypto@vger.kernel.org, Michael Ellerman , Nicholas Piggin , Christophe Leroy , Naveen N Rao , Madhavan Srinivasan , Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Christian Borntraeger , Sven Schnelle , Haren Myneni , Rick Lindsley , Nick Child , Thomas Falcon , Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , "Michael S. Tsirkin" , Jason Wang , Xuan Zhuo , =?utf-8?q?Eugenio_P=C3=A9rez?= , Keith Busch , Jens Axboe , Christoph Hellwig , Sagi Grimberg , "K. Y. Srinivasan" , Haiyang Zhang , Wei Liu , Dexuan Cui , Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy=C5=84ski?= , Manivannan Sadhasivam , Rob Herring , Bjorn Helgaas , James Smart , Dick Kennedy , "James E.J. Bottomley" , "Martin K. Petersen" , Yury Norov , Rasmus Villemoes , Matt Wu , Steffen Klassert , Daniel Jordan , Andrew Morton , Greg Kurz , Peter Xu , Shrikanth Hegde , Hendrik Brueckner Subject: [PATCH 06/14] cpumask: re-introduce cpumask_next{,_and}_wrap() Date: Sat, 28 Dec 2024 10:49:38 -0800 Message-ID: <20241228184949.31582-7-yury.norov@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241228184949.31582-1-yury.norov@gmail.com> References: <20241228184949.31582-1-yury.norov@gmail.com> Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 cpumask_next_wrap_old() has two additional parameters, comparing to it's analogue in linux/find.h find_next_bit_wrap(). The reason for that is historical. Before 4fe49b3b97c262 ("lib/bitmap: introduce for_each_set_bit_wrap() macro"), cpumask_next_wrap() was used to implement for_each_cpu_wrap() iterator. Now that the iterator is an alias to generic for_each_set_bit_wrap(), the additional parameters aren't used and may confuse readers. All existing users call cpumask_next_wrap() in a way that makes it possible to turn it to straight and simple alias to find_next_bit_wrap(). In a couple places kernel users opencode missing cpumask_next_and_wrap(). Add it as well. Signed-off-by: Yury Norov --- include/linux/cpumask.h | 37 +++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h index b267a4f6a917..18c9908d50c4 100644 --- a/include/linux/cpumask.h +++ b/include/linux/cpumask.h @@ -284,6 +284,43 @@ unsigned int cpumask_next_and(int n, const struct cpumask *src1p, small_cpumask_bits, n + 1); } +/** + * cpumask_next_and_wrap - get the next cpu in *src1p & *src2p, starting from + * @n and wrapping around, if needed + * @n: the cpu prior to the place to search (i.e. return will be > @n) + * @src1p: the first cpumask pointer + * @src2p: the second cpumask pointer + * + * Return: >= nr_cpu_ids if no further cpus set in both. + */ +static __always_inline +unsigned int cpumask_next_and_wrap(int n, const struct cpumask *src1p, + const struct cpumask *src2p) +{ + /* -1 is a legal arg here. */ + if (n != -1) + cpumask_check(n); + return find_next_and_bit_wrap(cpumask_bits(src1p), cpumask_bits(src2p), + small_cpumask_bits, n + 1); +} + +/* + * cpumask_next_wrap - get the next cpu in *src, starting from + * @n and wrapping around, if needed + * @n: the cpu prior to the place to search + * @src: cpumask pointer + * + * Return: >= nr_cpu_ids if no further cpus set in both. + */ +static __always_inline +unsigned int cpumask_next_wrap(int n, const struct cpumask *src) +{ + /* -1 is a legal arg here. */ + if (n != -1) + cpumask_check(n); + return find_next_bit_wrap(cpumask_bits(src), small_cpumask_bits, n + 1); +} + /** * for_each_cpu - iterate over every cpu in a mask * @cpu: the (optionally unsigned) integer iterator From patchwork Sat Dec 28 18:49:43 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yury Norov X-Patchwork-Id: 854343 Received: from mail-yb1-f179.google.com (mail-yb1-f179.google.com [209.85.219.179]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id ABA8919EED2; 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[24.129.28.254]) by smtp.gmail.com with ESMTPSA id 3f1490d57ef6-e537cc1e928sm5201774276.17.2024.12.28.10.50.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 28 Dec 2024 10:50:15 -0800 (PST) From: Yury Norov To: linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org, James Smart , Dick Kennedy , "James E.J. Bottomley" , "Martin K. Petersen" Cc: Yury Norov , Rasmus Villemoes Subject: [PATCH 11/14] scsi: lpfc: switch lpfc_irq_rebalance() to using cpumask_next_wrap() Date: Sat, 28 Dec 2024 10:49:43 -0800 Message-ID: <20241228184949.31582-12-yury.norov@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241228184949.31582-1-yury.norov@gmail.com> References: <20241228184949.31582-1-yury.norov@gmail.com> Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Calling cpumask_next_wrap_old() with starting CPU equal to wrapping CPU is the same as request to find next CPU, wrapping around if needed. cpumask_next_wrap() is the proper replacement for that. Signed-off-by: Yury Norov Reviewed-by: Justin Tee --- drivers/scsi/lpfc/lpfc_init.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c index 31622fb0614a..e94a7b8973a7 100644 --- a/drivers/scsi/lpfc/lpfc_init.c +++ b/drivers/scsi/lpfc/lpfc_init.c @@ -12876,7 +12876,7 @@ lpfc_irq_rebalance(struct lpfc_hba *phba, unsigned int cpu, bool offline) if (offline) { /* Find next online CPU on original mask */ - cpu_next = cpumask_next_wrap_old(cpu, orig_mask, cpu, true); + cpu_next = cpumask_next_wrap(cpu, orig_mask); cpu_select = lpfc_next_online_cpu(orig_mask, cpu_next); /* Found a valid CPU */ From patchwork Sat Dec 28 18:49:44 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yury Norov X-Patchwork-Id: 854153 Received: from mail-yb1-f179.google.com (mail-yb1-f179.google.com [209.85.219.179]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EE56F19F41A; Sat, 28 Dec 2024 18:50:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.219.179 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1735411821; cv=none; b=Y1L5wjNvX1OZTBKbSp/LeL2Qmi+300KGMsmNfAVZNrAlPozzW1Mq//axdkgpiLvshYvkvq8hvmilX+BcziX34ObITB+oM4jN0voplIfEWIRzpKe5tWO7SN4dH1aFcdmmieHIv2E7kPWccsU0hnKMb6jmzDE9vnHmgLPd+KycbM0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1735411821; c=relaxed/simple; bh=CCJtLFBCs6CKtlN21Jf8J9218bTM+KX7G7To006Rf3o=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=HDE61zVLKhBIkLym52JgrsB4K/2LKOc3v0wRUtdo4m/FlfIdfpwfzYbOl9jiO0N1VDoXvp1ZjI8MOMa3gkUOfKg/SuOgSF8Xqcrtzit5DZAdNH/pITU6edGTpWrE3RyLCDjL3KOsbuMi4sEntfxQJeZEAw5g4lU103rrCFFuo/I= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=nIGenw5z; arc=none smtp.client-ip=209.85.219.179 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="nIGenw5z" Received: by mail-yb1-f179.google.com with SMTP id 3f1490d57ef6-e53ef7462b6so4633666276.3; Sat, 28 Dec 2024 10:50:19 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1735411819; x=1736016619; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:from:to:cc:subject:date:message-id :reply-to; bh=QHPIZAncAii6tgbh0wNxh85yAc7Gn1z/+3/HM+ibJUk=; b=nIGenw5zaGkJmAryzB3kQXm8+qNZZorrCRzWZyV5LH+/Uuh0ZTSp+f/V2rStzQ1yaZ fbv3ugUSlSPVgz0Hga5GYWf/bQFPdNw4O2u4XJIqC/Bdo1ln8dFrW8UnQeRZma5F1OB9 1OMfFn9LEvF8GuYy1CTCvsv+nLcc/TwFZZ0jzEIN1NABgwPVedujH1kFslAqenyQFKhH y6LHeKtCXTDU/dIL0V8zQYAGh3c5akZiNsYm+WC7DoAcnnriZeXanD7JiunhQ+K1FvWJ aqrTuCFldlBg+2zO4Br7clxLznEo4g0zJGvY7wDZB3+pdTEJiPJWpEdgwMUI06VUaaV3 ADSQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1735411819; x=1736016619; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=QHPIZAncAii6tgbh0wNxh85yAc7Gn1z/+3/HM+ibJUk=; b=hZkR/zxBo0Z1JDWOFA45nsmmxtM7b33Z3QP2LrE2uhfN4fc4OnxCCrjEQtHSCq43Eb o2va0eOBMmNUhljLrBvjSZ26o4+R/bvAZTR1SyIjDr43HR7hGhK35DWZY7GErNe8S4EH cqAkMeFROv/vuPS7F3qndym9LG7JGCiKXtUYNzyXYiVZkQ4/8fiuA8pZzDljsMZaeFs/ Od0wKf51/xTARzIHIM1FzNG9poRzWefA5IIIZFnQdqkX/ZwSUFwIT5XYQB/8iE/MQzeO vkHQj730HsxmhFKg7jTbEc3VHZsDRZx+AfavIOeh9Vq610oSSrD61969NGi48BxqaeB0 A3Lg== X-Forwarded-Encrypted: i=1; AJvYcCUvaFUZIyy4W6Pe0z4w0WKKYzxFcqOjP2kxkOcoJWmJOkKV/Be2//G/WMsWVUyEADJxy+bhc9mae7leuvc=@vger.kernel.org X-Gm-Message-State: AOJu0YzyvEOi0OLwznRx9FHQ1f/JPw/hfg5vDY6qDijLtqX0/j1boDm9 XYvCVRH1Xi6kNHfwnRyFgVcXeS9aD2hQrCnEVscXW2XIM8/Vrg1gf9ZxxzkX X-Gm-Gg: ASbGncs4C4fY3EPb/bfpvJE04Wlrr9lcSmyL/lZQQPKXjZBIyAhxpDkEjGooWa3JrJg qNi8/3WZlZVoF2GiVEE3HtgEAwQ5y9CWimjLbeC9hY+v6SY9aVjEneMZzuBpFEWYUl8Scv0fhUO jtEMkxFuLcgRlXmlNagFsgitkRToyMGooxojTxsbyU/ZNi/Lih71wBpOw+rMCGr5XnWjY75fVL7 ZPDFqBQiwnXi6Odvf7sB/FGAQhYxlNMuwrmfKcyRS1elgvUN6OeUrsCSaOiAaAP/q6aXjwRY9HO IKsPKK6vNpS8Wq9K X-Google-Smtp-Source: AGHT+IHcVmQ8u7XvWW06STVtFjh0Z/K0WoYV9ZsBMGJX581Zr3/nYzYWbMrabkokE7DvE5bpKUWkOw== X-Received: by 2002:a25:21d7:0:b0:e3a:3c1a:3bef with SMTP id 3f1490d57ef6-e538c3a0018mr17151525276.36.1735411818952; Sat, 28 Dec 2024 10:50:18 -0800 (PST) Received: from localhost (c-24-129-28-254.hsd1.fl.comcast.net. [24.129.28.254]) by smtp.gmail.com with ESMTPSA id 3f1490d57ef6-e537cf46c0dsm5057066276.43.2024.12.28.10.50.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 28 Dec 2024 10:50:18 -0800 (PST) From: Yury Norov To: linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, James Smart , Dick Kennedy , "James E.J. Bottomley" , "Martin K. Petersen" , Yury Norov , Rasmus Villemoes Subject: [PATCH 12/14] scsi: lpfc: rework lpfc_next_{online,present}_cpu() Date: Sat, 28 Dec 2024 10:49:44 -0800 Message-ID: <20241228184949.31582-13-yury.norov@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241228184949.31582-1-yury.norov@gmail.com> References: <20241228184949.31582-1-yury.norov@gmail.com> Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 lpfc_next_online_cpu() opencodes cpumask_next_and_wrap() by using a for-loop. Use it and make the lpfc_next_online_cpu() a plain one-liner. While there, rework lpfc_next_present_cpu() similarly. Notice that cpumask_next() followed by cpumask_first() in the worst case of an empty mask may traverse the mask twice. Cpumask_next_wrap() takes care of that correctly. Signed-off-by: Yury Norov Reviewed-by: Justin Tee --- drivers/scsi/lpfc/lpfc.h | 23 +++++------------------ 1 files changed, 5 insertions(+), 18 deletions(-) diff --git a/drivers/scsi/lpfc/lpfc.h b/drivers/scsi/lpfc/lpfc.h index e5a9c5a323f8..62438e84e52a 100644 --- a/drivers/scsi/lpfc/lpfc.h +++ b/drivers/scsi/lpfc/lpfc.h @@ -1715,18 +1715,12 @@ lpfc_phba_elsring(struct lpfc_hba *phba) * Note: If no valid cpu found, then nr_cpu_ids is returned. * **/ -static inline unsigned int +static __always_inline unsigned int lpfc_next_online_cpu(const struct cpumask *mask, unsigned int start) { - unsigned int cpu_it; - - for_each_cpu_wrap(cpu_it, mask, start) { - if (cpu_online(cpu_it)) - break; - } - - return cpu_it; + return cpumask_next_and_wrap(start, mask, cpu_online_mask); } + /** * lpfc_next_present_cpu - Finds next present CPU after n * @n: the cpu prior to search @@ -1734,16 +1728,9 @@ lpfc_next_online_cpu(const struct cpumask *mask, unsigned int start) * Note: If no next present cpu, then fallback to first present cpu. * **/ -static inline unsigned int lpfc_next_present_cpu(int n) +static __always_inline unsigned int lpfc_next_present_cpu(int n) { - unsigned int cpu; - - cpu = cpumask_next(n, cpu_present_mask); - - if (cpu >= nr_cpu_ids) - cpu = cpumask_first(cpu_present_mask); - - return cpu; + return cpumask_next_wrap(n, cpu_present_mask); } /**