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=-10.8 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,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 BD81EC433B4 for ; Thu, 8 Apr 2021 15:13:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 874F561104 for ; Thu, 8 Apr 2021 15:13:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232039AbhDHPNx (ORCPT ); Thu, 8 Apr 2021 11:13:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33666 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231916AbhDHPNu (ORCPT ); Thu, 8 Apr 2021 11:13:50 -0400 Received: from mail-pl1-x630.google.com (mail-pl1-x630.google.com [IPv6:2607:f8b0:4864:20::630]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5809AC061761 for ; Thu, 8 Apr 2021 08:13:38 -0700 (PDT) Received: by mail-pl1-x630.google.com with SMTP id h20so1214030plr.4 for ; Thu, 08 Apr 2021 08:13:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=t1jheMisYXMdN5Fdss9tgbGrP+XzDLRZ/7Kh5b0wdNA=; b=iNYdbRrjMebiGbOTPrO+9HDA1cqI/iPjtGrnHXc0PZISwsO31ps5YRgI8ndiGCY6KL x2A19JhcbK4WRlbm2i0SFOSyKJn66Rjs2N7lX5Rz2lrVL7qqT4xjXyzIm9WzhQdGwRBe pMmaMoM0Mg+r6+Gy8Go6idODq9Fq5w/bS4H/o= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=t1jheMisYXMdN5Fdss9tgbGrP+XzDLRZ/7Kh5b0wdNA=; b=VNxNiDdJR9IqDlLmEnUj3VFcY22xmwF6d+diMoK3/vtXKNh2c7kVEMeX+wx7iOPoZC CLsPXGL0I7n7QbPOhEguMqoVuBKOedTDn/aPBqrsYBSyfjh5FPEOHgafx2KnWj03jmh/ 1t2/Jehm4nWdA8uR64TLKAk/uaHLGj+oHVOxFHL06TlWl9iINnOf5Vb2vRsz0TXXm5Oa azcFz5VUR8Msiysaz5MLCw7AOJkKUnsddazOrGMsGT4o++QoUifQshG3FsbpUXzoKqRw +/mVJyi0J4UHRT4wndl+GRHKnAGWR0CRn+7mzz5FqerDp6UCRq3PmycNmIBNdYQu3HlK RbLQ== X-Gm-Message-State: AOAM532jd+d9kukkrcjslUWDhti1sFqHiroW2ocGQaNs0jIf/ZwBOMrD G1Py/qT76eQLRjPwAaGKhOceoYQaBQWsvGY/z49USw== X-Google-Smtp-Source: ABdhPJwfQ9alGXqX9yRAf7AKpwYa7g8632Y2ANX8LwLWCZ/a9u4tBVA5eeS6zWNJHm84NYuShUfeHeD44WWHsflBguc= X-Received: by 2002:a17:902:ea0c:b029:e9:8ae7:408f with SMTP id s12-20020a170902ea0cb02900e98ae7408fmr4138324plg.4.1617894817227; Thu, 08 Apr 2021 08:13:37 -0700 (PDT) MIME-Version: 1.0 References: <20210401065715.565226-1-leon@kernel.org> In-Reply-To: From: Devesh Sharma Date: Thu, 8 Apr 2021 20:42:57 +0530 Message-ID: Subject: Re: [PATCH rdma-next v2 0/5] Get rid of custom made module dependency To: Leon Romanovsky Cc: Jason Gunthorpe , Doug Ledford , "David S. Miller" , Jakub Kicinski , linux-rdma , Michael Chan , Naresh Kumar PBS , Netdev , Selvin Xavier , Somnath Kotur , Sriharsha Basavapatna Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="000000000000eb598a05bf777df7" Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org --000000000000eb598a05bf777df7 Content-Type: text/plain; charset="UTF-8" On Thu, Apr 8, 2021 at 5:14 PM Leon Romanovsky wrote: > > On Thu, Apr 08, 2021 at 05:06:24PM +0530, Devesh Sharma wrote: > > On Sat, Apr 3, 2021 at 5:12 PM Leon Romanovsky wrote: > > > > > > On Sat, Apr 03, 2021 at 03:52:13PM +0530, Devesh Sharma wrote: > > > > On Thu, Apr 1, 2021 at 12:27 PM Leon Romanovsky wrote: > > > > > > > > > > From: Leon Romanovsky > > > > > > > > > > Changelog: > > > > > v2: > > > > > * kbuild spotted that I didn't delete all code in patch #5, so deleted > > > > > even more ulp_ops derefences. > > > > > v1: https://lore.kernel.org/linux-rdma/20210329085212.257771-1-leon@kernel.org > > > > > * Go much deeper and removed useless ULP indirection > > > > > v0: https://lore.kernel.org/linux-rdma/20210324142524.1135319-1-leon@kernel.org > > > > > ----------------------------------------------------------------------- > > > > > > > > > > The following series fixes issue spotted in [1], where bnxt_re driver > > > > > messed with module reference counting in order to implement symbol > > > > > dependency of bnxt_re and bnxt modules. All of this is done, when in > > > > > upstream we have only one ULP user of that bnxt module. The simple > > > > > declaration of exported symbol would do the trick. > > > > > > > > > > This series removes that custom module_get/_put, which is not supposed > > > > > to be in the driver from the beginning and get rid of nasty indirection > > > > > logic that isn't relevant for the upstream code. > > > > > > > > > > Such small changes allow us to simplify the bnxt code and my hope that > > > > > Devesh will continue where I stopped and remove struct bnxt_ulp_ops too. > > > > > > > > > > Thanks > > > > > > > > > > [1] https://lore.kernel.org/linux-rdma/20210324142524.1135319-1-leon@kernel.org > > > > > > > > > > Leon Romanovsky (5): > > > > > RDMA/bnxt_re: Depend on bnxt ethernet driver and not blindly select it > > > > > RDMA/bnxt_re: Create direct symbolic link between bnxt modules > > > > > RDMA/bnxt_re: Get rid of custom module reference counting > > > > > net/bnxt: Remove useless check of non-existent ULP id > > > > > net/bnxt: Use direct API instead of useless indirection > > > > > > > > > > drivers/infiniband/hw/bnxt_re/Kconfig | 4 +- > > > > > drivers/infiniband/hw/bnxt_re/main.c | 93 ++----- > > > > > drivers/net/ethernet/broadcom/bnxt/bnxt.c | 4 +- > > > > > drivers/net/ethernet/broadcom/bnxt/bnxt.h | 1 - > > > > > drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c | 245 +++++++----------- > > > > > drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.h | 32 +-- > > > > > 6 files changed, 119 insertions(+), 260 deletions(-) > > > > > > > > Hi Leon, > > > > > > > > After a couple of internal discussions we reached a conclusion to > > > > implement the Auxbus driver interface and fix the problem once and for > > > > all. > > > > > > Thanks Devesh, > > > > > > Jason, it looks like we can proceed with this patchset, because in > > > auxbus mode this module refcount and ULP indirection logics will be > > > removed anyway. > > > > > > Thanks > > Hi Leon, > > > > In my internal testing, I am seeing a crash using the 3rd patch. I am > > spending a few cycles on debugging it. expect my input in a day or so. > > Can you please post the kernel crash report here? > I don't see how function rename in patch #3 can cause to the crash. Hey, unfortunately my kdump service config is giving me tough time on my host. I will share if I get it. > > Thanks > > > > > > > > > > > > > > -- > > > > > 2.30.2 > > > > > > > > > > > > > > > > > -- > > > > -Regards > > > > Devesh > > > > > > > > > > > > -- > > -Regards > > Devesh > > -- -Regards Devesh --000000000000eb598a05bf777df7 Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIIQcAYJKoZIhvcNAQcCoIIQYTCCEF0CAQExDzANBglghkgBZQMEAgEFADALBgkqhkiG9w0BBwGg gg3HMIIFDTCCA/WgAwIBAgIQeEqpED+lv77edQixNJMdADANBgkqhkiG9w0BAQsFADBMMSAwHgYD VQQLExdHbG9iYWxTaWduIFJvb3QgQ0EgLSBSMzETMBEGA1UEChMKR2xvYmFsU2lnbjETMBEGA1UE AxMKR2xvYmFsU2lnbjAeFw0yMDA5MTYwMDAwMDBaFw0yODA5MTYwMDAwMDBaMFsxCzAJBgNVBAYT AkJFMRkwFwYDVQQKExBHbG9iYWxTaWduIG52LXNhMTEwLwYDVQQDEyhHbG9iYWxTaWduIEdDQyBS MyBQZXJzb25hbFNpZ24gMiBDQSAyMDIwMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA vbCmXCcsbZ/a0fRIQMBxp4gJnnyeneFYpEtNydrZZ+GeKSMdHiDgXD1UnRSIudKo+moQ6YlCOu4t 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