From patchwork Wed Aug 28 02:48:34 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Matthew Brost X-Patchwork-Id: 13780311 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 EEB13C54751 for ; Wed, 28 Aug 2024 02:48:11 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id E71E710E444; Wed, 28 Aug 2024 02:48:08 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="LPqhhLTW"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.16]) by gabe.freedesktop.org (Postfix) with ESMTPS id 8095D10E43F; Wed, 28 Aug 2024 02:48:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1724813288; x=1756349288; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=X4NcHhht7R85hRcl43GBO0i1KlziGSyVufpAc1OriAU=; b=LPqhhLTWAp6JMJOOM7E5FE8UEkh3UYjP83Y98zdbGALzHcH6Ds5uMNOo gfMr4IsnTm94W+e19Sq5AOJUM/qgvacXKFNow/QQxvxeGaqjPxhzzGUAR otoLYjzxCD6LayYiOTrG9o9FJIE0DL+j1D71kA2mmWljhKqSDU/EfoDf7 gET+xpR5W5NbNIWcBLflwDKaEMlB9SQ2kefHBGXn8rpoSCgaQml6891p8 kycP849wwyPBTVy1iZYOzGLLdCuPR0zesngPFh1GUMqX2mqjZwT/juhDx QE3oXG/8TZiy8hjpNOuZE+utTIb3Cadk/PbITNfMBoq8J85vN13Hs+nSa g==; X-CSE-ConnectionGUID: R4ptwx9jTGOyYp+blpkqiA== X-CSE-MsgGUID: VxWdaxNWTD+v7auPvufuZw== X-IronPort-AV: E=McAfee;i="6700,10204,11177"; a="13251846" X-IronPort-AV: E=Sophos;i="6.10,181,1719903600"; d="scan'208";a="13251846" Received: from fmviesa003.fm.intel.com ([10.60.135.143]) by fmvoesa110.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Aug 2024 19:48:07 -0700 X-CSE-ConnectionGUID: OjqwvTI+QxGQ623af+GINg== X-CSE-MsgGUID: QG7qk4vRQjmjBmsL1Lj36Q== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.10,181,1719903600"; d="scan'208";a="67224584" Received: from lstrano-desk.jf.intel.com ([10.54.39.91]) by fmviesa003-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Aug 2024 19:48:06 -0700 From: Matthew Brost To: intel-xe@lists.freedesktop.org, dri-devel@lists.freedesktop.org Cc: airlied@gmail.com, christian.koenig@amd.com, thomas.hellstrom@linux.intel.com, matthew.auld@intel.com, daniel@ffwll.ch Subject: [RFC PATCH 01/28] dma-buf: Split out dma fence array create into alloc and arm functions Date: Tue, 27 Aug 2024 19:48:34 -0700 Message-Id: <20240828024901.2582335-2-matthew.brost@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240828024901.2582335-1-matthew.brost@intel.com> References: <20240828024901.2582335-1-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. v2: - s/arm/init (Christian) - Drop !array warn (Christian) Cc: Sumit Semwal Cc: Christian König Signed-off-by: Matthew Brost --- drivers/dma-buf/dma-fence-array.c | 78 ++++++++++++++++++++++--------- include/linux/dma-fence-array.h | 6 +++ 2 files changed, 63 insertions(+), 21 deletions(-) diff --git a/drivers/dma-buf/dma-fence-array.c b/drivers/dma-buf/dma-fence-array.c index c74ac197d5fe..0659e6b29b3c 100644 --- a/drivers/dma-buf/dma-fence-array.c +++ b/drivers/dma-buf/dma-fence-array.c @@ -144,37 +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_init - 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_init(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; - array->num_fences = num_fences; spin_lock_init(&array->lock); @@ -200,6 +201,41 @@ 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_init); + +/** + * 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_init(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..079b3dec0a16 100644 --- a/include/linux/dma-fence-array.h +++ b/include/linux/dma-fence-array.h @@ -79,6 +79,12 @@ 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_init(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,