From patchwork Fri Aug 23 04:54:42 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Matthew Brost X-Patchwork-Id: 13774597 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id A4F4FC52D7C for ; Fri, 23 Aug 2024 04:53:52 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 179A810EC1F; Fri, 23 Aug 2024 04:53:49 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="Bqn5haid"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.12]) by gabe.freedesktop.org (Postfix) with ESMTPS id E87DD10EC27; Fri, 23 Aug 2024 04:53:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1724388828; x=1755924828; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=9WWRRj1RW5kY9EJCtnqTP5B0OgZazgRaMjqrj4rNtn4=; b=Bqn5haid8BvI8oFCQpwSYC0nP/jx1i3Y8sSOHiSiKBim37SGk+ZbQBEU zphS7pB37h9UL23f5YJ+OVKHXXB17AONa4mgE3I1Abf/A+If0LsCJDDxK spgOZoZgMnzCc0rYvMLdKEKMqP9Dbm4tsMHSQDL+9Sk+HUwSTGcnFe7fe iKfUCE0JL9zI+ch8yypJFZ0+xTGpOlc3U0o9iRbyyodQM3Otyx+PSNs6t M4AvbgYVEeMe8fnICU7bmxePUFOYfGYhiq1LnFMfNEZRCCfzcnr+H49Gi BrzRHjnbWa0OXKsVw0wGKmlJw1gSxR5PWkadJI21SHGxRSF+i5qHsh8/z A==; X-CSE-ConnectionGUID: sLeG0EyaQSqSB85oz4CfCQ== X-CSE-MsgGUID: ptSAgMzXQbeaHIgp+4b9+g== X-IronPort-AV: E=McAfee;i="6700,10204,11172"; a="26709252" X-IronPort-AV: E=Sophos;i="6.10,169,1719903600"; d="scan'208";a="26709252" Received: from orviesa004.jf.intel.com ([10.64.159.144]) by fmvoesa106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Aug 2024 21:53:47 -0700 X-CSE-ConnectionGUID: eYjq4NBBSKGLzLe+DIUC3A== X-CSE-MsgGUID: +mBTDfe2SbOh1JKq+tok2w== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.10,169,1719903600"; d="scan'208";a="66608948" Received: from lstrano-desk.jf.intel.com ([10.54.39.91]) by orviesa004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Aug 2024 21:53:47 -0700 From: Matthew Brost To: intel-xe@lists.freedesktop.org, linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org Cc: thomas.hellstrom@linux.intel.com, sumit.semwal@linaro.org, christian.koenig@amd.com, daniel@ffwll.ch Subject: [PATCH v3 1/2] dma-buf: Split out dma fence array create into alloc and arm functions Date: Thu, 22 Aug 2024 21:54:42 -0700 Message-Id: <20240823045443.2132118-2-matthew.brost@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240823045443.2132118-1-matthew.brost@intel.com> References: <20240823045443.2132118-1-matthew.brost@intel.com> 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: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Useful to preallocate dma fence array and then arm in path of reclaim or a dma fence. Cc: Sumit Semwal Cc: Christian König Signed-off-by: Matthew Brost --- drivers/dma-buf/dma-fence-array.c | 81 ++++++++++++++++++++++--------- include/linux/dma-fence-array.h | 7 +++ 2 files changed, 66 insertions(+), 22 deletions(-) diff --git a/drivers/dma-buf/dma-fence-array.c b/drivers/dma-buf/dma-fence-array.c index c74ac197d5fe..b03e0a87a5cd 100644 --- a/drivers/dma-buf/dma-fence-array.c +++ b/drivers/dma-buf/dma-fence-array.c @@ -144,36 +144,38 @@ const struct dma_fence_ops dma_fence_array_ops = { EXPORT_SYMBOL(dma_fence_array_ops); /** - * dma_fence_array_create - Create a custom fence array + * dma_fence_array_alloc - Allocate a custom fence array + * @num_fences: [in] number of fences to add in the array + * + * Return dma fence array on success, NULL on failure + */ +struct dma_fence_array *dma_fence_array_alloc(int num_fences) +{ + struct dma_fence_array *array; + + return kzalloc(struct_size(array, callbacks, num_fences), GFP_KERNEL); +} +EXPORT_SYMBOL(dma_fence_array_alloc); + +/** + * dma_fence_array_arm - Arm a custom fence array + * @array: [in] dma fence array to arm * @num_fences: [in] number of fences to add in the array * @fences: [in] array containing the fences * @context: [in] fence context to use * @seqno: [in] sequence number to use * @signal_on_any: [in] signal on any fence in the array * - * Allocate a dma_fence_array object and initialize the base fence with - * dma_fence_init(). - * In case of error it returns NULL. - * - * The caller should allocate the fences array with num_fences size - * and fill it with the fences it wants to add to the object. Ownership of this - * array is taken and dma_fence_put() is used on each fence on release. - * - * If @signal_on_any is true the fence array signals if any fence in the array - * signals, otherwise it signals when all fences in the array signal. + * Implementation of @dma_fence_array_create without allocation. Useful to arm a + * preallocated dma fence fence in the path of reclaim or dma fence signaling. */ -struct dma_fence_array *dma_fence_array_create(int num_fences, - struct dma_fence **fences, - u64 context, unsigned seqno, - bool signal_on_any) +void dma_fence_array_arm(struct dma_fence_array *array, + int num_fences, + struct dma_fence **fences, + u64 context, unsigned seqno, + bool signal_on_any) { - struct dma_fence_array *array; - - WARN_ON(!num_fences || !fences); - - array = kzalloc(struct_size(array, callbacks, num_fences), GFP_KERNEL); - if (!array) - return NULL; + WARN_ON(!array || !num_fences || !fences); array->num_fences = num_fences; @@ -200,6 +202,41 @@ struct dma_fence_array *dma_fence_array_create(int num_fences, */ while (num_fences--) WARN_ON(dma_fence_is_container(fences[num_fences])); +} +EXPORT_SYMBOL(dma_fence_array_arm); + +/** + * dma_fence_array_create - Create a custom fence array + * @num_fences: [in] number of fences to add in the array + * @fences: [in] array containing the fences + * @context: [in] fence context to use + * @seqno: [in] sequence number to use + * @signal_on_any: [in] signal on any fence in the array + * + * Allocate a dma_fence_array object and initialize the base fence with + * dma_fence_init(). + * In case of error it returns NULL. + * + * The caller should allocate the fences array with num_fences size + * and fill it with the fences it wants to add to the object. Ownership of this + * array is taken and dma_fence_put() is used on each fence on release. + * + * If @signal_on_any is true the fence array signals if any fence in the array + * signals, otherwise it signals when all fences in the array signal. + */ +struct dma_fence_array *dma_fence_array_create(int num_fences, + struct dma_fence **fences, + u64 context, unsigned seqno, + bool signal_on_any) +{ + struct dma_fence_array *array; + + array = dma_fence_array_alloc(num_fences); + if (!array) + return NULL; + + dma_fence_array_arm(array, num_fences, fences, + context, seqno, signal_on_any); return array; } diff --git a/include/linux/dma-fence-array.h b/include/linux/dma-fence-array.h index 29c5650c1038..3466ffc4b803 100644 --- a/include/linux/dma-fence-array.h +++ b/include/linux/dma-fence-array.h @@ -79,6 +79,13 @@ to_dma_fence_array(struct dma_fence *fence) for (index = 0, fence = dma_fence_array_first(head); fence; \ ++(index), fence = dma_fence_array_next(head, index)) +struct dma_fence_array *dma_fence_array_alloc(int num_fences); +void dma_fence_array_arm(struct dma_fence_array *array, + int num_fences, + struct dma_fence **fences, + u64 context, unsigned seqno, + bool signal_on_any); + struct dma_fence_array *dma_fence_array_create(int num_fences, struct dma_fence **fences, u64 context, unsigned seqno,