From patchwork Tue Aug 6 12:06:44 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Wagner X-Patchwork-Id: 13754716 Received: from mail.nearlyone.de (mail.nearlyone.de [49.12.199.46]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A14151C9EBA; Tue, 6 Aug 2024 12:07:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=49.12.199.46 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722946061; cv=none; b=pGqcfFlP2Z3wt/BdK6wdyJwlbKy/9Dqh4axNf+zUxGRIQTDyud3IQfJJqIWRgZSY52xixigKPM6ydtsnc46mPV6/Ic4nIy2XlCOX09Q6qL1L83HQQ2eVc/7tvYfkihbopUtINb6c7McvY2vD+Ejj8rcU8jnvCt7CkkexE37rjSc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722946061; c=relaxed/simple; bh=J19hcuL1tCiVgxZMM3AYPth90a8EAiq97hFdaULHK1A=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=rLeNT/M8pfJK6eomBnrD4tuKBKB0CtB2kXSbTL6Rez2zHbG3O1xUIkWH+8XXUTsN02GNBn7ffJDYYt94rLJZtqA/Gy5wnCNp/8/jn1LfO7h8gVyQPoyUheydOdRUCPlF5IMWaxpAc+kWjauox0a8sF6lZsK7JH9hr5jk/ikobZY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=suse.de; spf=pass smtp.mailfrom=monom.org; dkim=pass (2048-bit key) header.d=monom.org header.i=@monom.org header.b=SyDtHztf; arc=none smtp.client-ip=49.12.199.46 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=suse.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=monom.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=monom.org header.i=@monom.org header.b="SyDtHztf" Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id EB3ADDAE22; Tue, 6 Aug 2024 14:07:35 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=monom.org; s=dkim; t=1722946057; h=from:subject:date:message-id:to:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:references; bh=pl/sLXhPjSdozSC6CzNS3XBtS+poy/4xCdFTh2N/iYI=; b=SyDtHztfZogC6F3whyinrU6GYIwLRO+sBOjW8ehLox8bpA8STGRUEsRodIDK3l0X84VoGV IVFgWts+ug75HXUyczpYvPBCuoWRCSn6MfLCg9ZNWKfHq42fJyUrQSOw2QZ6NEtXfgE2zl 7XV4HfBH62w3S2ewW6l9aOts2ROkpo24m/V6AqqxeJaDScwRrqbDKQzj+aSjtxsqy/Snd4 uWRNIKhjs6/A6dTAD3uOnly6tTCKbEWJVjcDSTRR6ELccHQG/RQt7Clnz3DGYjZWjoBqpl dzvWWAptGSGye+HGNdwWhaJ0fwQlgULWulBaM3R1K2qtYGrGCcmLTCEOctQgHA== From: Daniel Wagner Date: Tue, 06 Aug 2024 14:06:44 +0200 Subject: [PATCH v3 12/15] scsi: use block layer helpers to calculate num of queues Precedence: bulk X-Mailing-List: linux-block@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240806-isolcpus-io-queues-v3-12-da0eecfeaf8b@suse.de> References: <20240806-isolcpus-io-queues-v3-0-da0eecfeaf8b@suse.de> In-Reply-To: <20240806-isolcpus-io-queues-v3-0-da0eecfeaf8b@suse.de> To: Jens Axboe , Keith Busch , Sagi Grimberg , Thomas Gleixner , Christoph Hellwig , "Martin K. Petersen" , John Garry , "Michael S. Tsirkin" , Jason Wang , Kashyap Desai , Sumit Saxena , Shivasharan S , Chandrakanth patil , Sathya Prakash Veerichetty , Suganath Prabu Subramani , Nilesh Javali , GR-QLogic-Storage-Upstream@marvell.com, Jonathan Corbet Cc: Frederic Weisbecker , Mel Gorman , Hannes Reinecke , Sridhar Balaraman , "brookxu.cn" , Ming Lei , linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, linux-nvme@lists.infradead.org, linux-scsi@vger.kernel.org, virtualization@lists.linux.dev, megaraidlinux.pdl@broadcom.com, mpi3mr-linuxdrv.pdl@broadcom.com, MPT-FusionLinux.pdl@broadcom.com, storagedev@microchip.com, linux-doc@vger.kernel.org, Daniel Wagner X-Mailer: b4 0.14.0 X-Last-TLS-Session-Version: TLSv1.3 Multiqueue devices should only allocate queues for the housekeeping CPUs when isolcpus=io_queue is set. This avoids that the isolated CPUs get disturbed with OS workload. Use helpers which calculates the correct number of queues which should be used when isolcpus is used. Signed-off-by: Daniel Wagner --- drivers/scsi/megaraid/megaraid_sas_base.c | 15 +++++++++------ drivers/scsi/qla2xxx/qla_isr.c | 10 +++++----- drivers/scsi/smartpqi/smartpqi_init.c | 5 ++--- 3 files changed, 16 insertions(+), 14 deletions(-) diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c index d026b7513c8d..ddddcdbf71b2 100644 --- a/drivers/scsi/megaraid/megaraid_sas_base.c +++ b/drivers/scsi/megaraid/megaraid_sas_base.c @@ -5964,7 +5964,8 @@ megasas_alloc_irq_vectors(struct megasas_instance *instance) else instance->iopoll_q_count = 0; - num_msix_req = num_online_cpus() + instance->low_latency_index_start; + num_msix_req = blk_mq_num_online_queues(0) + + instance->low_latency_index_start; instance->msix_vectors = min(num_msix_req, instance->msix_vectors); @@ -5980,7 +5981,8 @@ megasas_alloc_irq_vectors(struct megasas_instance *instance) /* Disable Balanced IOPS mode and try realloc vectors */ instance->perf_mode = MR_LATENCY_PERF_MODE; instance->low_latency_index_start = 1; - num_msix_req = num_online_cpus() + instance->low_latency_index_start; + num_msix_req = blk_mq_num_online_queues(0) + + instance->low_latency_index_start; instance->msix_vectors = min(num_msix_req, instance->msix_vectors); @@ -6236,7 +6238,7 @@ static int megasas_init_fw(struct megasas_instance *instance) intr_coalescing = (scratch_pad_1 & MR_INTR_COALESCING_SUPPORT_OFFSET) ? true : false; if (intr_coalescing && - (num_online_cpus() >= MR_HIGH_IOPS_QUEUE_COUNT) && + (blk_mq_num_online_queues(0) >= MR_HIGH_IOPS_QUEUE_COUNT) && (instance->msix_vectors == MEGASAS_MAX_MSIX_QUEUES)) instance->perf_mode = MR_BALANCED_PERF_MODE; else @@ -6280,7 +6282,8 @@ static int megasas_init_fw(struct megasas_instance *instance) else instance->low_latency_index_start = 1; - num_msix_req = num_online_cpus() + instance->low_latency_index_start; + num_msix_req = blk_mq_num_online_queues(0) + + instance->low_latency_index_start; instance->msix_vectors = min(num_msix_req, instance->msix_vectors); @@ -6312,8 +6315,8 @@ static int megasas_init_fw(struct megasas_instance *instance) megasas_setup_reply_map(instance); dev_info(&instance->pdev->dev, - "current msix/online cpus\t: (%d/%d)\n", - instance->msix_vectors, (unsigned int)num_online_cpus()); + "current msix/max num queues\t: (%d/%u)\n", + instance->msix_vectors, blk_mq_num_online_queues(0)); dev_info(&instance->pdev->dev, "RDPQ mode\t: (%s)\n", instance->is_rdpq ? "enabled" : "disabled"); diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c index fe98c76e9be3..c4c6b5c6658c 100644 --- a/drivers/scsi/qla2xxx/qla_isr.c +++ b/drivers/scsi/qla2xxx/qla_isr.c @@ -4533,13 +4533,13 @@ qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp) if (USER_CTRL_IRQ(ha) || !ha->mqiobase) { /* user wants to control IRQ setting for target mode */ ret = pci_alloc_irq_vectors(ha->pdev, min_vecs, - min((u16)ha->msix_count, (u16)(num_online_cpus() + min_vecs)), - PCI_IRQ_MSIX); + blk_mq_num_online_queues(ha->msix_count) + min_vecs, + PCI_IRQ_MSIX); } else ret = pci_alloc_irq_vectors_affinity(ha->pdev, min_vecs, - min((u16)ha->msix_count, (u16)(num_online_cpus() + min_vecs)), - PCI_IRQ_MSIX | PCI_IRQ_AFFINITY, - &desc); + blk_mq_num_online_queues(ha->msix_count) + min_vecs, + PCI_IRQ_MSIX | PCI_IRQ_AFFINITY, + &desc); if (ret < 0) { ql_log(ql_log_fatal, vha, 0x00c7, diff --git a/drivers/scsi/smartpqi/smartpqi_init.c b/drivers/scsi/smartpqi/smartpqi_init.c index 1fb13d4e0448..da361602ad7d 100644 --- a/drivers/scsi/smartpqi/smartpqi_init.c +++ b/drivers/scsi/smartpqi/smartpqi_init.c @@ -5264,15 +5264,14 @@ static void pqi_calculate_queue_resources(struct pqi_ctrl_info *ctrl_info) if (reset_devices) { num_queue_groups = 1; } else { - int num_cpus; int max_queue_groups; max_queue_groups = min(ctrl_info->max_inbound_queues / 2, ctrl_info->max_outbound_queues - 1); max_queue_groups = min(max_queue_groups, PQI_MAX_QUEUE_GROUPS); - num_cpus = num_online_cpus(); - num_queue_groups = min(num_cpus, ctrl_info->max_msix_vectors); + num_queue_groups = + blk_mq_num_online_queues(ctrl_info->max_msix_vectors); num_queue_groups = min(num_queue_groups, max_queue_groups); }