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=-14.2 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 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 6B783C433B4 for ; Mon, 17 May 2021 19:54:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4A45461355 for ; Mon, 17 May 2021 19:54:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236743AbhEQT4N (ORCPT ); Mon, 17 May 2021 15:56:13 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57802 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235960AbhEQT4N (ORCPT ); Mon, 17 May 2021 15:56:13 -0400 Received: from mail-ed1-x532.google.com (mail-ed1-x532.google.com [IPv6:2a00:1450:4864:20::532]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3E3D3C061573 for ; Mon, 17 May 2021 12:54:55 -0700 (PDT) Received: by mail-ed1-x532.google.com with SMTP id w12so608264edx.1 for ; Mon, 17 May 2021 12:54:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-transfer-encoding:content-language; bh=pn6HLbkhe5VCCVD8p9BJTvIle8DzSLJAN/Z44NE5Q+g=; b=apCiEthUVlP2NlT+C8Te9m9pRQ2UgK4Lz295b27m4exzjTU36lXw6MuTJ+P9r1vhty wfWBo7Db1LxxhRTbgSXIrW4veo4yEouJUhPCyIwnJn0HwL8zZYHL/bEIMUkUXw0pmP/t LQLUsxLLYMQZuMgOrzBa/LjgLj9yg7h5r2msGWnvpTfR/hUCRZavAekoRnNBIuWpYBE2 rc9MEuJ9z3U8aEbVEhAWjrbF3so4M7eMpJxMG+EeGN5HXOmVOOQifQdy/KWvm29SpcfY 7CAgOCPb8TiTkilzFnJPIk0PvZnAgWnh2f+StKbt4RW3NykdmU1h2MFUjE9auENdGv8X RG5g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-transfer-encoding :content-language; bh=pn6HLbkhe5VCCVD8p9BJTvIle8DzSLJAN/Z44NE5Q+g=; b=dnpzx4TFVuCYS2AwMDBr3RLioBC6/hO79cP4fRZQxSP3znoWPMIeIrPnchmpBf2sZT kEtwpixP3ooHvkaxyD8OfTDCu3zYOoijifX/4znPTKa5fMy6nADrQv1yLoV9HTRx5Uhu feePVGuOoWZ06ZguYC8Rd6MRCII6WEouKqhu8elktRWxs12NahlYeVX84pJg0KjjJuE6 ksLMoYg2a23IT4D5TkVPNOm/Mhc+jZdmjqgv/U2Q52gXbkwB547M9+YLBnzk+djZ3K5/ uo2tB4uXjICAJOQUPlDSp4mrqhG1cWdDbEMyfd3B5GVwHASO1XEQkKT73Qr+Ilq/f5xp O7jg== X-Gm-Message-State: AOAM531RtSCA0hIbNE8xIVReQNeGfiVjrtW9XSPe0+BSazS4lY0xDT/L RbomKGC45I13QxaQbqLLg8U= X-Google-Smtp-Source: ABdhPJwEUvHkx4T4Q0SBXMBXCMLzw48OpqBIGVTD30mquW99ltdMw2k1zLH76+AGg8ZzkYSyWkWjbA== X-Received: by 2002:a05:6402:19a:: with SMTP id r26mr2090474edv.44.1621281294033; Mon, 17 May 2021 12:54:54 -0700 (PDT) Received: from ?IPv6:2a02:908:1252:fb60:bd86:58d9:7c79:a095? ([2a02:908:1252:fb60:bd86:58d9:7c79:a095]) by smtp.gmail.com with ESMTPSA id i19sm282060eds.65.2021.05.17.12.54.53 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 17 May 2021 12:54:53 -0700 (PDT) Subject: Re: [PATCH v7 12/16] drm/amdgpu: Fix hang on device removal. To: Andrey Grodzovsky , dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, linux-pci@vger.kernel.org, daniel.vetter@ffwll.ch, Harry.Wentland@amd.com Cc: ppaalanen@gmail.com, Alexander.Deucher@amd.com, gregkh@linuxfoundation.org, helgaas@kernel.org, Felix.Kuehling@amd.com References: <20210512142648.666476-1-andrey.grodzovsky@amd.com> <20210512142648.666476-13-andrey.grodzovsky@amd.com> <0e13e0fb-5cf8-30fa-6ed8-a0648f8fe50b@amd.com> <356d03bf-e221-86b1-f133-83def9d956bd@gmail.com> <8997d1b0-8f7a-e8dd-fabe-212fd181e24a@amd.com> From: =?UTF-8?Q?Christian_K=c3=b6nig?= Message-ID: <12f790fa-836f-c323-b8c5-dc565ee39a99@gmail.com> Date: Mon, 17 May 2021 21:54:52 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.8.1 MIME-Version: 1.0 In-Reply-To: <8997d1b0-8f7a-e8dd-fabe-212fd181e24a@amd.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-US Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Ok, then putting that on my TODO list for tomorrow. I've already found a problem with how we finish of fences, going to write more on this tomorrow. Christian. Am 17.05.21 um 21:46 schrieb Andrey Grodzovsky: > Yep, you can take a look. > > Andrey > > On 2021-05-17 3:39 p.m., Christian König wrote: >> You need to note who you are pinging here. >> >> I'm still assuming you wait for feedback from Daniel. Or should I >> take a look? >> >> Christian. >> >> Am 17.05.21 um 16:40 schrieb Andrey Grodzovsky: >>> Ping >>> >>> Andrey >>> >>> On 2021-05-14 10:42 a.m., Andrey Grodzovsky wrote: >>>> Ping >>>> >>>> Andrey >>>> >>>> On 2021-05-12 10:26 a.m., Andrey Grodzovsky wrote: >>>>> If removing while commands in flight you cannot wait to flush the >>>>> HW fences on a ring since the device is gone. >>>>> >>>>> Signed-off-by: Andrey Grodzovsky >>>>> --- >>>>>   drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c | 16 ++++++++++------ >>>>>   1 file changed, 10 insertions(+), 6 deletions(-) >>>>> >>>>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c >>>>> b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c >>>>> index 1ffb36bd0b19..fa03702ecbfb 100644 >>>>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c >>>>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c >>>>> @@ -36,6 +36,7 @@ >>>>>   #include >>>>>   #include >>>>> +#include >>>>>   #include "amdgpu.h" >>>>>   #include "amdgpu_trace.h" >>>>> @@ -525,8 +526,7 @@ int amdgpu_fence_driver_init(struct >>>>> amdgpu_device *adev) >>>>>    */ >>>>>   void amdgpu_fence_driver_fini_hw(struct amdgpu_device *adev) >>>>>   { >>>>> -    unsigned i, j; >>>>> -    int r; >>>>> +    int i, r; >>>>>       for (i = 0; i < AMDGPU_MAX_RINGS; i++) { >>>>>           struct amdgpu_ring *ring = adev->rings[i]; >>>>> @@ -535,11 +535,15 @@ void amdgpu_fence_driver_fini_hw(struct >>>>> amdgpu_device *adev) >>>>>               continue; >>>>>           if (!ring->no_scheduler) >>>>>               drm_sched_fini(&ring->sched); >>>>> -        r = amdgpu_fence_wait_empty(ring); >>>>> -        if (r) { >>>>> -            /* no need to trigger GPU reset as we are unloading */ >>>>> +        /* You can't wait for HW to signal if it's gone */ >>>>> +        if (!drm_dev_is_unplugged(&adev->ddev)) >>>>> +            r = amdgpu_fence_wait_empty(ring); >>>>> +        else >>>>> +            r = -ENODEV; >>>>> +        /* no need to trigger GPU reset as we are unloading */ >>>>> +        if (r) >>>>>               amdgpu_fence_driver_force_completion(ring); >>>>> -        } >>>>> + >>>>>           if (ring->fence_drv.irq_src) >>>>>               amdgpu_irq_put(adev, ring->fence_drv.irq_src, >>>>>                          ring->fence_drv.irq_type); >>>>> >> 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=-12.0 required=3.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED,DKIM_INVALID,DKIM_SIGNED,FREEMAIL_FORGED_FROMDOMAIN, FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=unavailable 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 A6418C43461 for ; Mon, 17 May 2021 19:54:58 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 6E64F60FF3 for ; Mon, 17 May 2021 19:54:58 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6E64F60FF3 Authentication-Results: mail.kernel.org; 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([2a02:908:1252:fb60:bd86:58d9:7c79:a095]) by smtp.gmail.com with ESMTPSA id i19sm282060eds.65.2021.05.17.12.54.53 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 17 May 2021 12:54:53 -0700 (PDT) Subject: Re: [PATCH v7 12/16] drm/amdgpu: Fix hang on device removal. To: Andrey Grodzovsky , dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, linux-pci@vger.kernel.org, daniel.vetter@ffwll.ch, Harry.Wentland@amd.com References: <20210512142648.666476-1-andrey.grodzovsky@amd.com> <20210512142648.666476-13-andrey.grodzovsky@amd.com> <0e13e0fb-5cf8-30fa-6ed8-a0648f8fe50b@amd.com> <356d03bf-e221-86b1-f133-83def9d956bd@gmail.com> <8997d1b0-8f7a-e8dd-fabe-212fd181e24a@amd.com> From: =?UTF-8?Q?Christian_K=c3=b6nig?= Message-ID: <12f790fa-836f-c323-b8c5-dc565ee39a99@gmail.com> Date: Mon, 17 May 2021 21:54:52 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.8.1 MIME-Version: 1.0 In-Reply-To: <8997d1b0-8f7a-e8dd-fabe-212fd181e24a@amd.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-US X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Alexander.Deucher@amd.com, gregkh@linuxfoundation.org, helgaas@kernel.org, Felix.Kuehling@amd.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Ok, then putting that on my TODO list for tomorrow. I've already found a problem with how we finish of fences, going to write more on this tomorrow. Christian. Am 17.05.21 um 21:46 schrieb Andrey Grodzovsky: > Yep, you can take a look. > > Andrey > > On 2021-05-17 3:39 p.m., Christian König wrote: >> You need to note who you are pinging here. >> >> I'm still assuming you wait for feedback from Daniel. Or should I >> take a look? >> >> Christian. >> >> Am 17.05.21 um 16:40 schrieb Andrey Grodzovsky: >>> Ping >>> >>> Andrey >>> >>> On 2021-05-14 10:42 a.m., Andrey Grodzovsky wrote: >>>> Ping >>>> >>>> Andrey >>>> >>>> On 2021-05-12 10:26 a.m., Andrey Grodzovsky wrote: >>>>> If removing while commands in flight you cannot wait to flush the >>>>> HW fences on a ring since the device is gone. >>>>> >>>>> Signed-off-by: Andrey Grodzovsky >>>>> --- >>>>>   drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c | 16 ++++++++++------ >>>>>   1 file changed, 10 insertions(+), 6 deletions(-) >>>>> >>>>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c >>>>> b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c >>>>> index 1ffb36bd0b19..fa03702ecbfb 100644 >>>>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c >>>>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c >>>>> @@ -36,6 +36,7 @@ >>>>>   #include >>>>>   #include >>>>> +#include >>>>>   #include "amdgpu.h" >>>>>   #include "amdgpu_trace.h" >>>>> @@ -525,8 +526,7 @@ int amdgpu_fence_driver_init(struct >>>>> amdgpu_device *adev) >>>>>    */ >>>>>   void amdgpu_fence_driver_fini_hw(struct amdgpu_device *adev) >>>>>   { >>>>> -    unsigned i, j; >>>>> -    int r; >>>>> +    int i, r; >>>>>       for (i = 0; i < AMDGPU_MAX_RINGS; i++) { >>>>>           struct amdgpu_ring *ring = adev->rings[i]; >>>>> @@ -535,11 +535,15 @@ void amdgpu_fence_driver_fini_hw(struct >>>>> amdgpu_device *adev) >>>>>               continue; >>>>>           if (!ring->no_scheduler) >>>>>               drm_sched_fini(&ring->sched); >>>>> -        r = amdgpu_fence_wait_empty(ring); >>>>> -        if (r) { >>>>> -            /* no need to trigger GPU reset as we are unloading */ >>>>> +        /* You can't wait for HW to signal if it's gone */ >>>>> +        if (!drm_dev_is_unplugged(&adev->ddev)) >>>>> +            r = amdgpu_fence_wait_empty(ring); >>>>> +        else >>>>> +            r = -ENODEV; >>>>> +        /* no need to trigger GPU reset as we are unloading */ >>>>> +        if (r) >>>>>               amdgpu_fence_driver_force_completion(ring); >>>>> -        } >>>>> + >>>>>           if (ring->fence_drv.irq_src) >>>>>               amdgpu_irq_put(adev, ring->fence_drv.irq_src, >>>>>                          ring->fence_drv.irq_type); >>>>> >> 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=-12.0 required=3.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED,DKIM_INVALID,DKIM_SIGNED,FREEMAIL_FORGED_FROMDOMAIN, FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_1 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 79CF9C433ED for ; Mon, 17 May 2021 19:54:57 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 35AAF611ED for ; Mon, 17 May 2021 19:54:57 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 35AAF611ED Authentication-Results: mail.kernel.org; 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To: Andrey Grodzovsky , dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, linux-pci@vger.kernel.org, daniel.vetter@ffwll.ch, Harry.Wentland@amd.com References: <20210512142648.666476-1-andrey.grodzovsky@amd.com> <20210512142648.666476-13-andrey.grodzovsky@amd.com> <0e13e0fb-5cf8-30fa-6ed8-a0648f8fe50b@amd.com> <356d03bf-e221-86b1-f133-83def9d956bd@gmail.com> <8997d1b0-8f7a-e8dd-fabe-212fd181e24a@amd.com> From: =?UTF-8?Q?Christian_K=c3=b6nig?= Message-ID: <12f790fa-836f-c323-b8c5-dc565ee39a99@gmail.com> Date: Mon, 17 May 2021 21:54:52 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.8.1 MIME-Version: 1.0 In-Reply-To: <8997d1b0-8f7a-e8dd-fabe-212fd181e24a@amd.com> Content-Language: en-US X-BeenThere: amd-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Discussion list for AMD gfx List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Alexander.Deucher@amd.com, gregkh@linuxfoundation.org, ppaalanen@gmail.com, helgaas@kernel.org, Felix.Kuehling@amd.com Content-Transfer-Encoding: base64 Content-Type: text/plain; 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