From patchwork Wed Jul 21 20:13:43 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Jason Ekstrand X-Patchwork-Id: 12392103 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=-16.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 191CDC6377B for ; Wed, 21 Jul 2021 20:14:09 +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 DF27860BD3 for ; Wed, 21 Jul 2021 20:14:08 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DF27860BD3 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=jlekstrand.net Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id A759D6ECF4; Wed, 21 Jul 2021 20:14:06 +0000 (UTC) Received: from mail-pl1-x633.google.com (mail-pl1-x633.google.com [IPv6:2607:f8b0:4864:20::633]) by gabe.freedesktop.org (Postfix) with ESMTPS id 81E156ECF4 for ; Wed, 21 Jul 2021 20:14:03 +0000 (UTC) Received: by mail-pl1-x633.google.com with SMTP id x16so1686889plg.3 for ; Wed, 21 Jul 2021 13:14:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=jlekstrand-net.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=gZDUyU6TiqgcwzDSQgDDr7H1fzdH4+hJ76kiwfOJe/I=; b=bpLYY+SJUhbN35eV8XoeJsgTlP2woAn2Wfg4P6c9EmQRKuroVXKcLZ08ZTkynQf+NA mgKzxqgANHjC71JKmmkACy97MlryMuAsobPhsU7/VeF93B7P9yimORxCzQrFIDzdhY8E qX4JVtfTRWO8OMLxJ5Vy4yQ7pQ5ig7Fc0BZ1yFpYy20A1frauWIPadrimfrOL9H/KXXE wHmGbzImW6yKyJiknjUmvh04f5uPz08QcpSkWAORb09YDlPrXs8MefryqAHWcYOdHT5C QVznNn97WisSLBfmwysLh0Sliaz/dtckT0Kpc4RqZuHqQH4yaEn6vNQuMYu7baSO8vjW RpQw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=gZDUyU6TiqgcwzDSQgDDr7H1fzdH4+hJ76kiwfOJe/I=; b=qETtbvGq4DEngIPBQdaEXhipZlSkaPSixL611v2G+5+/jRzOx+0tRyI8gcmCOBA5tY fAGcJZeff0QeUZ3XcXMowvHnaFQwNp2WhUgk84ZE+9VJz2HP3Tpw7LwwojL0mYGckf16 nx3RdBc+pYTCmPyOdnQ5t7BO9UjSB1BvS8FeyBVNao4JKHnMwhb/Z+fMHRWfAn5FiNgg cNUrFbzArc7bntjFzSNQo6y1Z/BWtk5xbBYKOADPZz2u9SOL/mXgzq/peZ3HGDshfaZC UpMyYGxA2CWYSY720SatXTJhXfu8WGsOB+vpDYo64CZ3/yyeWDzPyqsOcMJ4icYxFEW5 Kuaw== X-Gm-Message-State: AOAM532mPnZMw3db8puaR4S1reOr4ZjRe0L0W1ZcFSfZw/s7VoNzdGiV QTwDNGm6WfNRjAJXislgcebqOg== X-Google-Smtp-Source: ABdhPJzvumOfOa+Llndako4OEPGVoU1nzb/wY1xvSbRODr8qOpVkHbicXlsIjJcJaxy3J8G0qKi9bg== X-Received: by 2002:a17:90a:f28e:: with SMTP id fs14mr5514578pjb.106.1626898443011; Wed, 21 Jul 2021 13:14:03 -0700 (PDT) Received: from omlet.com ([134.134.137.82]) by smtp.gmail.com with ESMTPSA id h24sm28777439pfn.180.2021.07.21.13.14.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 21 Jul 2021 13:14:02 -0700 (PDT) From: Jason Ekstrand To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH 7/7] drm/i915/gem: Migrate to system at dma-buf attach time (v7) Date: Wed, 21 Jul 2021 15:13:43 -0500 Message-Id: <20210721201343.2962674-8-jason@jlekstrand.net> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210721201343.2962674-1-jason@jlekstrand.net> References: <20210721201343.2962674-1-jason@jlekstrand.net> MIME-Version: 1.0 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: =?utf-8?q?Thomas_Hellstr=C3=B6m?= , kernel test robot , Jason Ekstrand , "Michael J . Ruhl" Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: Thomas Hellström Until we support p2p dma or as a complement to that, migrate data to system memory at dma-buf attach time if possible. v2: - Rebase on dynamic exporter. Update the igt_dmabuf_import_same_driver selftest to migrate if we are LMEM capable. v3: - Migrate also in the pin() callback. v4: - Migrate in attach v5: (jason) - Lock around the migration v6: (jason) - Move the can_migrate check outside the lock - Rework the selftests to test more migration conditions. In particular, SMEM, LMEM, and LMEM+SMEM are all checked. v7: (mauld) - Misc style nits Signed-off-by: Thomas Hellström Signed-off-by: Michael J. Ruhl Reported-by: kernel test robot Signed-off-by: Jason Ekstrand Reviewed-by: Jason Ekstrand --- drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c | 23 ++++- .../drm/i915/gem/selftests/i915_gem_dmabuf.c | 87 ++++++++++++++++++- 2 files changed, 106 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c index 59dc56ae14d6b..afa34111de02e 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c @@ -164,8 +164,29 @@ static int i915_gem_dmabuf_attach(struct dma_buf *dmabuf, struct dma_buf_attachment *attach) { struct drm_i915_gem_object *obj = dma_buf_to_obj(dmabuf); + struct i915_gem_ww_ctx ww; + int err; + + if (!i915_gem_object_can_migrate(obj, INTEL_REGION_SMEM)) + return -EOPNOTSUPP; + + for_i915_gem_ww(&ww, err, true) { + err = i915_gem_object_lock(obj, &ww); + if (err) + continue; + + err = i915_gem_object_migrate(obj, &ww, INTEL_REGION_SMEM); + if (err) + continue; - return i915_gem_object_pin_pages_unlocked(obj); + err = i915_gem_object_wait_migration(obj, 0); + if (err) + continue; + + err = i915_gem_object_pin_pages(obj); + } + + return err; } static void i915_gem_dmabuf_detach(struct dma_buf *dmabuf, diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c index d4ce01e6ee854..ffae7df5e4d7d 100644 --- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c +++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c @@ -85,9 +85,63 @@ static int igt_dmabuf_import_self(void *arg) return err; } -static int igt_dmabuf_import_same_driver(void *arg) +static int igt_dmabuf_import_same_driver_lmem(void *arg) { struct drm_i915_private *i915 = arg; + struct intel_memory_region *lmem = i915->mm.regions[INTEL_REGION_LMEM]; + struct drm_i915_gem_object *obj; + struct drm_gem_object *import; + struct dma_buf *dmabuf; + int err; + + if (!lmem) + return 0; + + force_different_devices = true; + + obj = __i915_gem_object_create_user(i915, PAGE_SIZE, &lmem, 1); + if (IS_ERR(obj)) { + pr_err("__i915_gem_object_create_user failed with err=%ld\n", + PTR_ERR(dmabuf)); + err = PTR_ERR(obj); + goto out_ret; + } + + dmabuf = i915_gem_prime_export(&obj->base, 0); + if (IS_ERR(dmabuf)) { + pr_err("i915_gem_prime_export failed with err=%ld\n", + PTR_ERR(dmabuf)); + err = PTR_ERR(dmabuf); + goto out; + } + + /* + * We expect an import of an LMEM-only object to fail with + * -EOPNOTSUPP because it can't be migrated to SMEM. + */ + import = i915_gem_prime_import(&i915->drm, dmabuf); + if (!IS_ERR(import)) { + drm_gem_object_put(import); + pr_err("i915_gem_prime_import succeeded when it shouldn't have\n"); + err = -EINVAL; + } else if (PTR_ERR(import) != -EOPNOTSUPP) { + pr_err("i915_gem_prime_import failed with the wrong err=%ld\n", + PTR_ERR(import)); + err = PTR_ERR(import); + } + + dma_buf_put(dmabuf); +out: + i915_gem_object_put(obj); +out_ret: + force_different_devices = false; + return err; +} + +static int igt_dmabuf_import_same_driver(struct drm_i915_private *i915, + struct intel_memory_region **regions, + unsigned int num_regions) +{ struct drm_i915_gem_object *obj, *import_obj; struct drm_gem_object *import; struct dma_buf *dmabuf; @@ -97,8 +151,12 @@ static int igt_dmabuf_import_same_driver(void *arg) int err; force_different_devices = true; - obj = i915_gem_object_create_shmem(i915, PAGE_SIZE); + + obj = __i915_gem_object_create_user(i915, PAGE_SIZE, + regions, num_regions); if (IS_ERR(obj)) { + pr_err("__i915_gem_object_create_user failed with err=%ld\n", + PTR_ERR(dmabuf)); err = PTR_ERR(obj); goto out_ret; } @@ -180,6 +238,27 @@ static int igt_dmabuf_import_same_driver(void *arg) return err; } +static int igt_dmabuf_import_same_driver_smem(void *arg) +{ + struct drm_i915_private *i915 = arg; + struct intel_memory_region *smem = i915->mm.regions[INTEL_REGION_SMEM]; + + return igt_dmabuf_import_same_driver(i915, &smem, 1); +} + +static int igt_dmabuf_import_same_driver_lmem_smem(void *arg) +{ + struct drm_i915_private *i915 = arg; + struct intel_memory_region *regions[2]; + + if (!i915->mm.regions[INTEL_REGION_LMEM]) + return 0; + + regions[0] = i915->mm.regions[INTEL_REGION_LMEM]; + regions[1] = i915->mm.regions[INTEL_REGION_SMEM]; + return igt_dmabuf_import_same_driver(i915, regions, 2); +} + static int igt_dmabuf_import(void *arg) { struct drm_i915_private *i915 = arg; @@ -390,7 +469,9 @@ int i915_gem_dmabuf_live_selftests(struct drm_i915_private *i915) { static const struct i915_subtest tests[] = { SUBTEST(igt_dmabuf_export), - SUBTEST(igt_dmabuf_import_same_driver), + SUBTEST(igt_dmabuf_import_same_driver_lmem), + SUBTEST(igt_dmabuf_import_same_driver_smem), + SUBTEST(igt_dmabuf_import_same_driver_lmem_smem), }; return i915_subtests(tests, i915);