From patchwork Mon Sep 16 14:51:06 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Thomas_Hellstr=C3=B6m?= X-Patchwork-Id: 13805550 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 CB9B7C3ABD1 for ; Mon, 16 Sep 2024 14:51:45 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 5385B10E3A2; Mon, 16 Sep 2024 14:51:45 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="Xjz9LWfM"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.21]) by gabe.freedesktop.org (Postfix) with ESMTPS id 973AB10E3A1; Mon, 16 Sep 2024 14:51:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1726498303; x=1758034303; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=waMGjUU4c819QX9rZ6M/04SpPkygIrFGAJzhtAj6dA4=; b=Xjz9LWfMUBp8E3YSTGX8ONmdNSaIOHg9jpiKNXcSvnr8thLrMQEUDvm+ MbhO+MG8MgCXMXfKq+U+4twq412afDS12gWftG5ylYUDg8FoXlsxB818r 9E3teGKzF5rZBE0uTnU5xdw0McTp7X3tmlhTeN3ozRmEaujf+UVrMd09g F0u+Ly9s3seVJVtpgBjTL86urBJwG3nn+KLMhXpXWAdSjTdcM8Omr7Bb+ eA3/CLd3YWrw3f2z7/uahMfGkxbOEIGudG5uoJR2j80LgVSi+Maw6V/Jb Fx6QMhXKlNf+G3QzEu+1yc5ZgPKQKONhHlv9bas0ORwayXl4t/gtazqMH g==; X-CSE-ConnectionGUID: GHa2mHquQbaIh+DF73oFUQ== X-CSE-MsgGUID: jsmJnfJSSzi9I90WGe12yw== X-IronPort-AV: E=McAfee;i="6700,10204,11197"; a="25259458" X-IronPort-AV: E=Sophos;i="6.10,233,1719903600"; d="scan'208";a="25259458" Received: from fmviesa007.fm.intel.com ([10.60.135.147]) by orvoesa113.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Sep 2024 07:51:43 -0700 X-CSE-ConnectionGUID: tUxQqo+QTJSmcY3xNNjXZg== X-CSE-MsgGUID: KIeums0gQR+dGSKiJsheJw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.10,233,1719903600"; d="scan'208";a="68572942" Received: from dneilan-mobl1.ger.corp.intel.com (HELO fedora..) ([10.245.244.45]) by fmviesa007-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Sep 2024 07:51:41 -0700 From: =?utf-8?q?Thomas_Hellstr=C3=B6m?= To: intel-xe@lists.freedesktop.org Cc: =?utf-8?q?Thomas_Hellstr=C3=B6m?= , Matthew Brost , Somalapuram Amaranath , =?utf-8?q?Christian_?= =?utf-8?q?K=C3=B6nig?= , Paulo Zanoni , Simona Vetter , dri-devel@lists.freedesktop.org Subject: [PATCH v10 1/7] drm/ttm: Balance ttm_resource_cursor_init() and ttm_resource_cursor_fini() Date: Mon, 16 Sep 2024 16:51:06 +0200 Message-ID: <20240916145112.3336-2-thomas.hellstrom@linux.intel.com> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240916145112.3336-1-thomas.hellstrom@linux.intel.com> References: <20240916145112.3336-1-thomas.hellstrom@linux.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" Make the interface more symmetric by providing and using a ttm_resource_cursor_init(). v10: - Fix a stray newline (Matthew Brost) - Update kerneldoc (Matthew Brost) Signed-off-by: Thomas Hellström Reviewed-by: Matthew Brost Reviewed-by: Christian König --- drivers/gpu/drm/ttm/ttm_bo.c | 3 ++- drivers/gpu/drm/ttm/ttm_bo_util.c | 3 ++- drivers/gpu/drm/ttm/ttm_resource.c | 35 ++++++++++++++++++++---------- include/drm/ttm/ttm_resource.h | 11 +++++----- 4 files changed, 34 insertions(+), 18 deletions(-) diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c index 320592435252..06a237d420dc 100644 --- a/drivers/gpu/drm/ttm/ttm_bo.c +++ b/drivers/gpu/drm/ttm/ttm_bo.c @@ -450,7 +450,8 @@ int ttm_bo_evict_first(struct ttm_device *bdev, struct ttm_resource_manager *man int ret = 0; spin_lock(&bdev->lru_lock); - res = ttm_resource_manager_first(man, &cursor); + ttm_resource_cursor_init(&cursor, man); + res = ttm_resource_manager_first(&cursor); ttm_resource_cursor_fini(&cursor); if (!res) { ret = -ENOENT; diff --git a/drivers/gpu/drm/ttm/ttm_bo_util.c b/drivers/gpu/drm/ttm/ttm_bo_util.c index 3c07f4712d5c..454a51239614 100644 --- a/drivers/gpu/drm/ttm/ttm_bo_util.c +++ b/drivers/gpu/drm/ttm/ttm_bo_util.c @@ -865,7 +865,8 @@ s64 ttm_lru_walk_for_evict(struct ttm_lru_walk *walk, struct ttm_device *bdev, s64 lret; spin_lock(&bdev->lru_lock); - ttm_resource_manager_for_each_res(man, &cursor, res) { + ttm_resource_cursor_init(&cursor, man); + ttm_resource_manager_for_each_res(&cursor, res) { struct ttm_buffer_object *bo = res->bo; bool bo_needs_unlock = false; bool bo_locked = false; diff --git a/drivers/gpu/drm/ttm/ttm_resource.c b/drivers/gpu/drm/ttm/ttm_resource.c index 6d764ba88aab..2b69229f127c 100644 --- a/drivers/gpu/drm/ttm/ttm_resource.c +++ b/drivers/gpu/drm/ttm/ttm_resource.c @@ -80,6 +80,23 @@ static void ttm_bulk_move_drop_cursors(struct ttm_lru_bulk_move *bulk) ttm_resource_cursor_clear_bulk(cursor); } +/** + * ttm_resource_cursor_init() - Initialize a struct ttm_resource_cursor + * @cursor: The cursor to initialize. + * @man: The resource manager. + * + * Initialize the cursor before using it for iteration. + */ +void ttm_resource_cursor_init(struct ttm_resource_cursor *cursor, + struct ttm_resource_manager *man) +{ + cursor->priority = 0; + cursor->man = man; + ttm_lru_item_init(&cursor->hitch, TTM_LRU_HITCH); + INIT_LIST_HEAD(&cursor->bulk_link); + INIT_LIST_HEAD(&cursor->hitch.link); +} + /** * ttm_resource_cursor_fini() - Finalize the LRU list cursor usage * @cursor: The struct ttm_resource_cursor to finalize. @@ -577,7 +594,6 @@ ttm_resource_cursor_check_bulk(struct ttm_resource_cursor *cursor, /** * ttm_resource_manager_first() - Start iterating over the resources * of a resource manager - * @man: resource manager to iterate over * @cursor: cursor to record the position * * Initializes the cursor and starts iterating. When done iterating, @@ -586,17 +602,16 @@ ttm_resource_cursor_check_bulk(struct ttm_resource_cursor *cursor, * Return: The first resource from the resource manager. */ struct ttm_resource * -ttm_resource_manager_first(struct ttm_resource_manager *man, - struct ttm_resource_cursor *cursor) +ttm_resource_manager_first(struct ttm_resource_cursor *cursor) { - lockdep_assert_held(&man->bdev->lru_lock); + struct ttm_resource_manager *man = cursor->man; - cursor->priority = 0; - cursor->man = man; - ttm_lru_item_init(&cursor->hitch, TTM_LRU_HITCH); - INIT_LIST_HEAD(&cursor->bulk_link); - list_add(&cursor->hitch.link, &man->lru[cursor->priority]); + if (WARN_ON_ONCE(!man)) + return NULL; + + lockdep_assert_held(&man->bdev->lru_lock); + list_move(&cursor->hitch.link, &man->lru[cursor->priority]); return ttm_resource_manager_next(cursor); } @@ -632,8 +647,6 @@ ttm_resource_manager_next(struct ttm_resource_cursor *cursor) ttm_resource_cursor_clear_bulk(cursor); } - ttm_resource_cursor_fini(cursor); - return NULL; } diff --git a/include/drm/ttm/ttm_resource.h b/include/drm/ttm/ttm_resource.h index be034be56ba1..e1f3b95d73b6 100644 --- a/include/drm/ttm/ttm_resource.h +++ b/include/drm/ttm/ttm_resource.h @@ -325,6 +325,9 @@ struct ttm_resource_cursor { unsigned int priority; }; +void ttm_resource_cursor_init(struct ttm_resource_cursor *cursor, + struct ttm_resource_manager *man); + void ttm_resource_cursor_fini(struct ttm_resource_cursor *cursor); /** @@ -456,8 +459,7 @@ void ttm_resource_manager_debug(struct ttm_resource_manager *man, struct drm_printer *p); struct ttm_resource * -ttm_resource_manager_first(struct ttm_resource_manager *man, - struct ttm_resource_cursor *cursor); +ttm_resource_manager_first(struct ttm_resource_cursor *cursor); struct ttm_resource * ttm_resource_manager_next(struct ttm_resource_cursor *cursor); @@ -466,14 +468,13 @@ ttm_lru_first_res_or_null(struct list_head *head); /** * ttm_resource_manager_for_each_res - iterate over all resources - * @man: the resource manager * @cursor: struct ttm_resource_cursor for the current position * @res: the current resource * * Iterate over all the evictable resources in a resource manager. */ -#define ttm_resource_manager_for_each_res(man, cursor, res) \ - for (res = ttm_resource_manager_first(man, cursor); res; \ +#define ttm_resource_manager_for_each_res(cursor, res) \ + for (res = ttm_resource_manager_first(cursor); res; \ res = ttm_resource_manager_next(cursor)) struct ttm_kmap_iter *