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=-16.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=ham 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 10BA0C433E0 for ; Mon, 11 Jan 2021 12:16:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C4864221E3 for ; Mon, 11 Jan 2021 12:16:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726301AbhAKMQO (ORCPT ); Mon, 11 Jan 2021 07:16:14 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37064 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726288AbhAKMQO (ORCPT ); Mon, 11 Jan 2021 07:16:14 -0500 Received: from mail-qk1-x731.google.com (mail-qk1-x731.google.com [IPv6:2607:f8b0:4864:20::731]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8AA0DC061786 for ; Mon, 11 Jan 2021 04:15:33 -0800 (PST) Received: by mail-qk1-x731.google.com with SMTP id w79so14347162qkb.5 for ; Mon, 11 Jan 2021 04:15:33 -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; bh=cElkeEp+CDfnuvlwPZwm1bl4OFQ8I7cUOplthJZCRrU=; b=FRCUxMaTfckcdVWgPXv0R8KqdoVY7ljLbdCWr5dfrHMJvV1YN71W+vcjdhlJZL8frj cP4wKdvXoILWuXptzWV9UHNZC+PZW29xPS9SA/9jwJVsuNQ3r3LsD/I+C6XiAbQvXJiz uI8ARHExeQqSci+/nJSC1jI8tyG7hTP5kwYLs= 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; bh=cElkeEp+CDfnuvlwPZwm1bl4OFQ8I7cUOplthJZCRrU=; b=Wy09YLBNIFTn+Hr8ayzxczJgzno74yaqwe7/V0QSEimujP2vuTcy6VsuIN9biD9b3f 0Q6gSC1f6ii5xHYzewGtd+jo81Do6aoX/O2g6DZh6rXnx1AeuofBb4juLlPSg0qSzvUB Pcy9MgexLlFV/85Ld/BWSNDybibpPV2flVb+I23YaIz+cNacrI7+I986fejqKDGcIJPr F8d27T3V77xxJ/ubCVwAeCUguRMmW/MlXzWmewhzSZ5T92UjHMr4JCjCSx5fzUXdlUYJ 2T4diURO+MnyfU0AZEDBuZZ5omOqEzrjA3JKpIqJylaXPTwmXZUfEQ9mU+SjSuqFCHle SUGg== X-Gm-Message-State: AOAM533zVslFROjBxIb0nQIYac+OGMp7bE3lrjukKR0kB+K5TIIAsonj 6yR6dV7qn0p+CpAMNScUg8WigYG043CLuCkb5WICm8FjkbOVB0oVW8NddItSmssTRwAIlJ32DFl 9LPRcapVYGyvJ4B/YhPN5sEBl161oiHKVkmja X-Google-Smtp-Source: ABdhPJzd4eJ2gGWm3DifIqxI9zQvmzlQpQ/UDbnrQBZPz/oYj/D1dcxJp9HPlVG5+u8d/X+/Fd4gc8hmeaQdhQeI+co= X-Received: by 2002:a05:620a:69c:: with SMTP id f28mr16012498qkh.127.1610367332388; Mon, 11 Jan 2021 04:15:32 -0800 (PST) From: Kashyap Desai References: <20201203034100.29716-1-kashyap.desai@broadcom.com> In-Reply-To: <20201203034100.29716-1-kashyap.desai@broadcom.com> MIME-Version: 1.0 X-Mailer: Microsoft Outlook 15.0 Thread-Index: AQHOEf3M/0CyAu39AtgNSQNXwBT1dKo0AZiQ Date: Mon, 11 Jan 2021 17:45:29 +0530 Message-ID: Subject: RE: [PATCH v2 0/4] io_uring iopoll in scsi layer To: linux-scsi@vger.kernel.org, martin.petersen@oracle.com Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="000000000000d3351805b89edcf3" Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org --000000000000d3351805b89edcf3 Content-Type: text/plain; charset="UTF-8" Hi Martin, Due to some issue in RCU lock (only in debugging environments), there was booting issue and shared host tag support of megaraid_sas driver is revert backed in 5.10 - https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit /?id=1a0e1943d8798cb3241fb5edb9a836af1611b60a == Commit message == It turns out that it causes long boot-time latencies (to the point of timeouts and failed boots). The cause is the increase in request queues, and a fix for that is queued up for 5.11, but we're reverting this commit that triggered the problem for now. == Can you include this patch set for 5.11 ? I see (origin/5.11/scsi-queue) has below change set. It looks like you have already queued up "shared host tag feature for 5.11" git log --oneline drivers/scsi/megaraid/ 498854102c1c scsi: megaraid_sas: Update function description 977001df0368 scsi: megaraid_sas: Use generic power management 8ed9d987c6d9 scsi: megaraid_sas: Drop PCI wakeup calls from .resume bba84aeccafb scsi: megaraid_sas: Simplify compat_ioctl handling 381d34e376e3 scsi: megaraid_sas: Check user-provided offsets 55e0500eb5c0 Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi 103fbf8e4020 scsi: megaraid_sas: Added support for shared host tagset for cpuhotplug 62aa501dc9dd scsi: megaraid: Make smp_affinity_enable static Kashyap > -----Original Message----- > From: Kashyap Desai [mailto:kashyap.desai@broadcom.com] > Sent: Thursday, December 3, 2020 9:11 AM > To: linux-scsi@vger.kernel.org > Cc: Kashyap Desai > Subject: [PATCH v2 0/4] io_uring iopoll in scsi layer > > This patch series is to support io_uring iopoll feature in scsi stack. This patch > set requires shared hosttag support. > > This patch set is created on top of for-next branch of > https://kernel.googlesource.com/pub/scm/linux/kernel/git/axboe/linux-block > > v2 -> > - updated feedback from v1. > - add reviewed-by & tested-by tag > - remove flood of prints in scsi_debug driver during iopoll > reported by Douglas Gilbert. > - added new patch to support to get shost from hctx. > added new helper function "scsi_init_hctx" > > v1 -> > Fixed warnings in scsi_debug driver. > Reported-by: kernel test robot > > Kashyap Desai (4): > add io_uring with IOPOLL support in scsi layer > megaraid_sas: iouring iopoll support > scsi_debug : iouring iopoll support > scsi: set shost as hctx driver_data > > 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 + > drivers/scsi/scsi_debug.c | 130 ++++++++++++++++++++ > drivers/scsi/scsi_lib.c | 28 ++++- > include/scsi/scsi_cmnd.h | 1 + > include/scsi/scsi_host.h | 11 ++ > 8 files changed, 294 insertions(+), 14 deletions(-) > > > base-commit: 0eedceafd3a63fd082743c914853ef4b9247dbe6 > -- > 2.18.1 -- This electronic communication and the information and any files transmitted with it, or attached to it, are confidential and are intended solely for the use of the individual or entity to whom it is addressed and may contain information that is confidential, legally privileged, protected by privacy laws, or otherwise restricted from disclosure to anyone else. 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