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=-6.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no 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 7742BC56202 for ; Fri, 13 Nov 2020 10:48:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2D7F02224D for ; Fri, 13 Nov 2020 10:48:39 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=broadcom.com header.i=@broadcom.com header.b="E4ZbcHeg" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726355AbgKMKsi (ORCPT ); Fri, 13 Nov 2020 05:48:38 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51902 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726184AbgKMKsh (ORCPT ); Fri, 13 Nov 2020 05:48:37 -0500 Received: from mail-qk1-x732.google.com (mail-qk1-x732.google.com [IPv6:2607:f8b0:4864:20::732]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 14266C0613D1 for ; Fri, 13 Nov 2020 02:48:37 -0800 (PST) Received: by mail-qk1-x732.google.com with SMTP id 11so8367232qkd.5 for ; Fri, 13 Nov 2020 02:48:37 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; h=from:references:in-reply-to:mime-version:thread-index:date :message-id:subject:to:cc; bh=3JeADPUve3Ms5nMr7C9u3QebmABLkJXNnLQB6QE4DBA=; b=E4ZbcHeg3SvhU5EmGABco1x45EGkEfiHGHPL9NF3iXFO/YWPourBnBnGqGa1O09sRG c2/GbdRzM56rQU8X/JZTFWxv3f5amvoRRUg2kZ/lX3AAtrX8+lclTJCx1lcbbnKJyOn7 mseXEhvkaUOzpuPqE9/E4Zy4LwEK8/WBEaBG8= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:references:in-reply-to:mime-version :thread-index:date:message-id:subject:to:cc; bh=3JeADPUve3Ms5nMr7C9u3QebmABLkJXNnLQB6QE4DBA=; b=BicZDLnyCvQwEvY2SR1ntOfdkfBm+eLl+c03ysXfQd72YlnxZwkqXo9DdH9o+rL7wS fSUWC0Xi/nxtNro5SprCy9bX6N9Teoql9XfxcivQGhYF0r0YeXA9WLOmyVlqz+DYo9Pe WdHyy5qtJbrr0qIxESvSphfeZvqENPzQBBJpey+eytL3IJAH370SQqZeW4nPQmn6CEf7 D7CWwrYZmpBX/u/25bmqipjJqkIGivuFNZOFjxX9Y7ex/TsUVbhB495N/5NoiNefgY8W F0WO2APG5NCd3Ntd+iCZgT17Mo+9FMB+dNgT1Ru7TdM7Btb/hTdCfyuHchz/FPpMjGEf gcYA== X-Gm-Message-State: AOAM531h2/m9glQYqHTeWtINcLo373HduhDx52GmAom54imWpqwMbf/d X7Bls2Gu+otcJE+XKNR/r6OrQAK4ZyUn/veDz7Qq81g6ETNDNA== X-Google-Smtp-Source: ABdhPJx82GhKLl+7LO+aFCHWszPFU865zY9Y5KsT9beDtPDJHYWbkqYMNyp8dK3t/myvLlZv/96uAlDGxl+QWhhZbB8= X-Received: by 2002:a05:620a:1265:: with SMTP id b5mr1312605qkl.27.1605264515352; Fri, 13 Nov 2020 02:48:35 -0800 (PST) From: Kashyap Desai References: <20201015133702.62879-1-kashyap.desai@broadcom.com> In-Reply-To: <20201015133702.62879-1-kashyap.desai@broadcom.com> MIME-Version: 1.0 X-Mailer: Microsoft Outlook 15.0 Thread-Index: AQGJzrs5sdJlHzBIQISuMRxkJPRbM6pftz1w Date: Fri, 13 Nov 2020 16:18:33 +0530 Message-ID: <52b4b839da97f5fef007b451c98680c4@mail.gmail.com> Subject: RE: [PATCH v1 2/3] megaraid_sas: iouring iopoll support To: linux-scsi@vger.kernel.org Cc: Sumit Saxena , Chandrakanth Patil , linux-block@vger.kernel.org Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="0000000000003bfe9605b3fac560" Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org --0000000000003bfe9605b3fac560 Content-Type: text/plain; charset="UTF-8" > Add support of iouring iopoll interface. This feature requires shared hosttag > support in kernel and driver. > > Driver will work in non-IRQ mode = There will not be any msix vector > associated for poll_queues and h/w can still work in this mode. > MegaRaid h/w is single submission queue and multiple reply queue, but using > shared host tagset support it will enable simulated multiple hw queue. > > Driver allocates some extra reply queues and it will be marked as poll_queue. > These poll_queues will not have associated msix vectors. All the IO > completion on this queue will be done from IOPOLL interface. > > megaraid_sas driver having 8 poll_queues and using io_uring hiprio=1 > settings, It can reach 3.2M IOPs and there is zero interrupt generated by h/w. > > This feature can be enabled using module parameter poll_queues. > > Signed-off-by: Kashyap Desai > Cc: sumit.saxena@broadcom.com > Cc: chandrakanth.patil@broadcom.com > Cc: linux-block@vger.kernel.org > > --- > drivers/scsi/megaraid/megaraid_sas.h | 2 + > drivers/scsi/megaraid/megaraid_sas_base.c | 90 ++++++++++++++++++--- > drivers/scsi/megaraid/megaraid_sas_fusion.c | 43 +++++++++- > drivers/scsi/megaraid/megaraid_sas_fusion.h | 3 + > 4 files changed, 127 insertions(+), 11 deletions(-) > Is there any feedback/comment on this patch series ? --0000000000003bfe9605b3fac560 Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic 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