From patchwork Thu Dec 22 08:36:37 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chris Wilson X-Patchwork-Id: 9484507 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 1BC7D601D3 for ; Thu, 22 Dec 2016 08:42:12 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 17776277D9 for ; Thu, 22 Dec 2016 08:42:12 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 0B923281C3; Thu, 22 Dec 2016 08:42:12 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.1 required=2.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_MED, T_DKIM_INVALID autolearn=unavailable version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 9AE80277D9 for ; Thu, 22 Dec 2016 08:42:11 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id A55646F199; Thu, 22 Dec 2016 08:42:08 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail-wj0-x241.google.com (mail-wj0-x241.google.com [IPv6:2a00:1450:400c:c01::241]) by gabe.freedesktop.org (Postfix) with ESMTPS id 0BE986F175; Thu, 22 Dec 2016 08:37:23 +0000 (UTC) Received: by mail-wj0-x241.google.com with SMTP id kp2so35175248wjc.0; Thu, 22 Dec 2016 00:37:22 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:from:to:cc:subject:date:message-id:in-reply-to:references; bh=xzajREeYGcmSWlnLb/GlQlH8GHYM24x9VMjZVuJU58s=; b=KLZvk9HzZaXusos7zMhn3QCDyMOkeW6mxgIeeSLRKvu+rLGcn24kFE0+TwRjkZn/gr 5w0WaqOJh+ZDyJx7dKW+ROUXZaQYF+MgxSm1DnE1nVlicWUOUMPXLufztGVTn5m0NAIi guIGYtoIuBP6i5hPAoc3IqX8DZ5E3PclfnbWolIBtIoLR2iCbEl2AVOD4UnOl2Y6JX1a MqmSEh2kgQdRQ8op7D3GtxRlCqZXr8iCFhIim3RZTtKDRJDXwLzCvGzn1TYBl+l9gjUA kvvelyv84/5vrj2TDx4Ck/T2sMj4qZHQyFsjxMMqzbEm94kZVzjqigwvsZnj9BwRxLnQ CVUQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:from:to:cc:subject:date:message-id :in-reply-to:references; bh=xzajREeYGcmSWlnLb/GlQlH8GHYM24x9VMjZVuJU58s=; b=Qco7RiMj3SUjLYhQ1EAa58TJZt+fWJrWigOMjk9+6Gd+LqrkhyGjuUh8QTqUM7S+c8 TruRVptbb2c3DqDa9mSggF4qGxpt/hBz9m2VaDhHP66bgTkW3ddmSNgDznXdDC89IagD sjPSK4ElEPyrSypwS0OoTY2gjARqLXPrBc6PW6UDAdy5h05B/BHHg8/a+V9clJl4HJot VAFSEsVHZf54Cis6U8atlddXoVqeX4jz0niaAtteu8SiXISC/o7Zs6gN+VS1X3w7NLk/ QIz9nyEMHvdjT97C+I6/ZoRbzt77WnFalMvhZspm+FmrLkj5v0bMej9rOZCBx41n4bWz L8HQ== X-Gm-Message-State: AIkVDXJi5cKc8LMGQ0kgvf4w/H9M4g3njEciI8nn9kyJ63oaClVTwXeHn1IdaJ/aI9naNA== X-Received: by 10.194.21.35 with SMTP id s3mr7962366wje.192.1482395840795; Thu, 22 Dec 2016 00:37:20 -0800 (PST) Received: from haswell.alporthouse.com ([78.156.65.138]) by smtp.gmail.com with ESMTPSA id di9sm34442318wjc.37.2016.12.22.00.37.19 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 22 Dec 2016 00:37:19 -0800 (PST) From: Chris Wilson To: dri-devel@lists.freedesktop.org Subject: [PATCH v4 34/38] drm: Wrap drm_mm_node.hole_follows Date: Thu, 22 Dec 2016 08:36:37 +0000 Message-Id: <20161222083641.2691-35-chris@chris-wilson.co.uk> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20161222083641.2691-1-chris@chris-wilson.co.uk> References: <20161222083641.2691-1-chris@chris-wilson.co.uk> Cc: intel-gfx@lists.freedesktop.org X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Insulate users from changes to the internal hole tracking within struct drm_mm_node by using an accessor for hole_follows. Signed-off-by: Chris Wilson Reviewed-by: Joonas Lahtinen --- drivers/gpu/drm/drm_mm.c | 12 ++++++------ drivers/gpu/drm/i915/i915_vma.c | 4 ++-- drivers/gpu/drm/selftests/test-drm_mm.c | 18 ++++++++++-------- include/drm/drm_mm.h | 22 +++++++++++++++++++--- 4 files changed, 37 insertions(+), 19 deletions(-) diff --git a/drivers/gpu/drm/drm_mm.c b/drivers/gpu/drm/drm_mm.c index b59978fe4c6e..c0024719f32b 100644 --- a/drivers/gpu/drm/drm_mm.c +++ b/drivers/gpu/drm/drm_mm.c @@ -323,7 +323,7 @@ int drm_mm_reserve_node(struct drm_mm *mm, struct drm_mm_node *node) } hole = list_last_entry(&hole->node_list, typeof(*hole), node_list); - if (!hole->hole_follows) + if (!drm_mm_hole_follows(hole)) return -ENOSPC; adj_start = hole_start = __drm_mm_hole_node_start(hole); @@ -408,7 +408,7 @@ static void drm_mm_insert_helper_range(struct drm_mm_node *hole_node, u64 adj_start = hole_start; u64 adj_end = hole_end; - DRM_MM_BUG_ON(!hole_node->hole_follows || node->allocated); + DRM_MM_BUG_ON(!drm_mm_hole_follows(hole_node) || node->allocated); if (adj_start < start) adj_start = start; @@ -523,16 +523,16 @@ void drm_mm_remove_node(struct drm_mm_node *node) prev_node = list_entry(node->node_list.prev, struct drm_mm_node, node_list); - if (node->hole_follows) { + if (drm_mm_hole_follows(node)) { DRM_MM_BUG_ON(__drm_mm_hole_node_start(node) == __drm_mm_hole_node_end(node)); list_del(&node->hole_stack); - } else + } else { DRM_MM_BUG_ON(__drm_mm_hole_node_start(node) != __drm_mm_hole_node_end(node)); + } - - if (!prev_node->hole_follows) { + if (!drm_mm_hole_follows(prev_node)) { prev_node->hole_follows = 1; list_add(&prev_node->hole_stack, &mm->hole_stack); } else diff --git a/drivers/gpu/drm/i915/i915_vma.c b/drivers/gpu/drm/i915/i915_vma.c index 608008d2d999..cfec4222b04e 100644 --- a/drivers/gpu/drm/i915/i915_vma.c +++ b/drivers/gpu/drm/i915/i915_vma.c @@ -327,11 +327,11 @@ bool i915_gem_valid_gtt_space(struct i915_vma *vma, unsigned long cache_level) GEM_BUG_ON(list_empty(&node->node_list)); other = list_prev_entry(node, node_list); - if (color_differs(other, cache_level) && !other->hole_follows) + if (color_differs(other, cache_level) && !drm_mm_hole_follows(other)) return false; other = list_next_entry(node, node_list); - if (color_differs(other, cache_level) && !node->hole_follows) + if (color_differs(other, cache_level) && !drm_mm_hole_follows(node)) return false; return true; diff --git a/drivers/gpu/drm/selftests/test-drm_mm.c b/drivers/gpu/drm/selftests/test-drm_mm.c index f609e4f1eeaf..2ce92f4dcfc7 100644 --- a/drivers/gpu/drm/selftests/test-drm_mm.c +++ b/drivers/gpu/drm/selftests/test-drm_mm.c @@ -63,7 +63,7 @@ static bool assert_no_holes(const struct drm_mm *mm) } drm_mm_for_each_node(hole, mm) { - if (hole->hole_follows) { + if (drm_mm_hole_follows(hole)) { pr_err("Hole follows node, expected none!\n"); return false; } @@ -125,7 +125,7 @@ static bool assert_continuous(const struct drm_mm *mm, u64 size) return false; } - if (node->hole_follows) { + if (drm_mm_hole_follows(node)) { pr_err("node[%ld] is followed by a hole!\n", n); return false; } @@ -828,7 +828,8 @@ static bool assert_contiguous_in_range(struct drm_mm *mm, return false; } - if (node->hole_follows && drm_mm_hole_node_end(node) < end) { + if (drm_mm_hole_follows(node) && + drm_mm_hole_node_end(node) < end) { pr_err("node %d is followed by a hole!\n", n); return false; } @@ -1337,11 +1338,12 @@ static int evict_something(struct drm_mm *mm, err = -EINVAL; } - if (!assert_node(&tmp, mm, size, alignment, 0) || tmp.hole_follows) { + if (!assert_node(&tmp, mm, size, alignment, 0) || + drm_mm_hole_follows(&tmp)) { pr_err("Inserted did not fill the eviction hole: size=%lld [%d], align=%d [rem=%lld], start=%llx, hole-follows?=%d\n", tmp.size, size, alignment, misalignment(&tmp, alignment), - tmp.start, tmp.hole_follows); + tmp.start, drm_mm_hole_follows(&tmp)); err = -EINVAL; } @@ -1618,7 +1620,7 @@ static int igt_topdown(void *ignored) goto out; } - if (nodes[n].hole_follows) { + if (drm_mm_hole_follows(&nodes[n])) { pr_err("hole after topdown insert %d, start=%llx\n, size=%u", n, nodes[n].start, size); goto out; @@ -1650,7 +1652,7 @@ static int igt_topdown(void *ignored) goto out; } - if (node->hole_follows) { + if (drm_mm_hole_follows(node)) { pr_err("hole after topdown insert %d/%d, start=%llx\n", m, n, node->start); goto out; @@ -1705,7 +1707,7 @@ static void separate_adjacent_colors(const struct drm_mm_node *node, static bool colors_abutt(const struct drm_mm_node *node) { - if (!node->hole_follows && + if (!drm_mm_hole_follows(node) && list_next_entry(node, node_list)->allocated) { pr_err("colors abutt; %ld [%llx + %llx] is next to %ld [%llx + %llx]!\n", node->color, node->start, node->size, diff --git a/include/drm/drm_mm.h b/include/drm/drm_mm.h index aed93cbc4bde..7da7a171d6d5 100644 --- a/include/drm/drm_mm.h +++ b/include/drm/drm_mm.h @@ -155,6 +155,22 @@ static inline bool drm_mm_initialized(const struct drm_mm *mm) return mm->hole_stack.next; } +/** + * drm_mm_hole_follows - checks whether a hole follows this node + * @node: drm_mm_node to check + * + * Holes are embedded into the drm_mm using the tail of a drm_mm_node. + * If you wish to know whether a hole follows this particular node, + * query this function. + * + * Returns: + * True if a hole follows the @node. + */ +static inline bool drm_mm_hole_follows(const struct drm_mm_node *node) +{ + return node->hole_follows; +} + static inline u64 __drm_mm_hole_node_start(const struct drm_mm_node *hole_node) { return hole_node->start + hole_node->size; @@ -166,14 +182,14 @@ static inline u64 __drm_mm_hole_node_start(const struct drm_mm_node *hole_node) * * This is useful for driver-specific debug dumpers. Otherwise drivers should * not inspect holes themselves. Drivers must check first whether a hole indeed - * follows by looking at node->hole_follows. + * follows by looking at drm_mm_hole_follows() * * Returns: * Start of the subsequent hole. */ static inline u64 drm_mm_hole_node_start(const struct drm_mm_node *hole_node) { - DRM_MM_BUG_ON(!hole_node->hole_follows); + DRM_MM_BUG_ON(!drm_mm_hole_follows(hole_node)); return __drm_mm_hole_node_start(hole_node); } @@ -188,7 +204,7 @@ static inline u64 __drm_mm_hole_node_end(const struct drm_mm_node *hole_node) * * This is useful for driver-specific debug dumpers. Otherwise drivers should * not inspect holes themselves. Drivers must check first whether a hole indeed - * follows by looking at node->hole_follows. + * follows by looking at drm_mm_hole_follows(). * * Returns: * End of the subsequent hole.