From patchwork Thu Oct 3 21:00:59 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chris Wilson X-Patchwork-Id: 11173367 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 07D001709 for ; Thu, 3 Oct 2019 21:01:25 +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 E47CA20862 for ; Thu, 3 Oct 2019 21:01:24 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E47CA20862 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=chris-wilson.co.uk 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 E7C3C6EA3C; Thu, 3 Oct 2019 21:01:20 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from fireflyinternet.com (mail.fireflyinternet.com [109.228.58.192]) by gabe.freedesktop.org (Postfix) with ESMTPS id 126E46E177; Thu, 3 Oct 2019 21:01:18 +0000 (UTC) X-Default-Received-SPF: pass (skip=forwardok (res=PASS)) x-ip-name=78.156.65.138; Received: from haswell.alporthouse.com (unverified [78.156.65.138]) by fireflyinternet.com (Firefly Internet (M1)) with ESMTP id 18715182-1500050 for multiple; Thu, 03 Oct 2019 22:01:04 +0100 From: Chris Wilson To: intel-gfx@lists.freedesktop.org Subject: [PATCH 4/5] drm/mm: Convert drm_mm_node booleans to bitops Date: Thu, 3 Oct 2019 22:00:59 +0100 Message-Id: <20191003210100.22250-4-chris@chris-wilson.co.uk> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191003210100.22250-1-chris@chris-wilson.co.uk> References: <20191003210100.22250-1-chris@chris-wilson.co.uk> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: dri-devel@lists.freedesktop.org, tvrtko.ursulin@intel.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" A straightforward conversion of assignment and checking of the boolean state flags (allocated, scanned) into non-atomic bitops. The caller remains responsible for all locking around the drm_mm and its nodes. Signed-off-by: Chris Wilson Reviewed-by: Tvrtko Ursulin --- drivers/gpu/drm/drm_mm.c | 18 +++++++++--------- drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c | 2 +- drivers/gpu/drm/i915/i915_gem.c | 4 ++-- include/drm/drm_mm.h | 7 ++++--- 4 files changed, 16 insertions(+), 15 deletions(-) diff --git a/drivers/gpu/drm/drm_mm.c b/drivers/gpu/drm/drm_mm.c index 99312bdc6273..a9cab5e53731 100644 --- a/drivers/gpu/drm/drm_mm.c +++ b/drivers/gpu/drm/drm_mm.c @@ -426,7 +426,7 @@ int drm_mm_reserve_node(struct drm_mm *mm, struct drm_mm_node *node) list_add(&node->node_list, &hole->node_list); drm_mm_interval_tree_add_node(hole, node); - node->allocated = true; + __set_bit(DRM_MM_NODE_ALLOCATED_BIT, &node->flags); node->hole_size = 0; rm_hole(hole); @@ -545,7 +545,7 @@ int drm_mm_insert_node_in_range(struct drm_mm * const mm, list_add(&node->node_list, &hole->node_list); drm_mm_interval_tree_add_node(hole, node); - node->allocated = true; + __set_bit(DRM_MM_NODE_ALLOCATED_BIT, &node->flags); rm_hole(hole); if (adj_start > hole_start) @@ -563,7 +563,7 @@ EXPORT_SYMBOL(drm_mm_insert_node_in_range); static inline bool drm_mm_node_scanned_block(const struct drm_mm_node *node) { - return node->scanned_block; + return test_bit(DRM_MM_NODE_SCANNED_BIT, &node->flags); } /** @@ -589,7 +589,7 @@ void drm_mm_remove_node(struct drm_mm_node *node) drm_mm_interval_tree_remove(node, &mm->interval_tree); list_del(&node->node_list); - node->allocated = false; + __clear_bit(DRM_MM_NODE_ALLOCATED_BIT, &node->flags); if (drm_mm_hole_follows(prev_node)) rm_hole(prev_node); @@ -627,8 +627,8 @@ void drm_mm_replace_node(struct drm_mm_node *old, struct drm_mm_node *new) &mm->holes_addr); } - old->allocated = false; - new->allocated = true; + __clear_bit(DRM_MM_NODE_ALLOCATED_BIT, &old->flags); + __set_bit(DRM_MM_NODE_ALLOCATED_BIT, &new->flags); } EXPORT_SYMBOL(drm_mm_replace_node); @@ -738,7 +738,7 @@ bool drm_mm_scan_add_block(struct drm_mm_scan *scan, DRM_MM_BUG_ON(node->mm != mm); DRM_MM_BUG_ON(!drm_mm_node_allocated(node)); DRM_MM_BUG_ON(drm_mm_node_scanned_block(node)); - node->scanned_block = true; + __set_bit(DRM_MM_NODE_SCANNED_BIT, &node->flags); mm->scan_active++; /* Remove this block from the node_list so that we enlarge the hole @@ -824,7 +824,7 @@ bool drm_mm_scan_remove_block(struct drm_mm_scan *scan, DRM_MM_BUG_ON(node->mm != scan->mm); DRM_MM_BUG_ON(!drm_mm_node_scanned_block(node)); - node->scanned_block = false; + __clear_bit(DRM_MM_NODE_SCANNED_BIT, &node->flags); DRM_MM_BUG_ON(!node->mm->scan_active); node->mm->scan_active--; @@ -922,7 +922,7 @@ void drm_mm_init(struct drm_mm *mm, u64 start, u64 size) /* Clever trick to avoid a special case in the free hole tracking. */ INIT_LIST_HEAD(&mm->head_node.node_list); - mm->head_node.allocated = false; + mm->head_node.flags = 0; mm->head_node.mm = mm; mm->head_node.start = start + size; mm->head_node.size = -size; diff --git a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c index 20d8a6297985..c049199a1df5 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c @@ -906,7 +906,7 @@ static void reloc_cache_init(struct reloc_cache *cache, cache->use_64bit_reloc = HAS_64BIT_RELOC(i915); cache->has_fence = cache->gen < 4; cache->needs_unfenced = INTEL_INFO(i915)->unfenced_needs_alignment; - cache->node.allocated = false; + cache->node.flags = 0; cache->ce = NULL; cache->rq = NULL; cache->rq_size = 0; diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index fa8e028ac0b5..7046067f70c1 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -351,7 +351,7 @@ i915_gem_gtt_pread(struct drm_i915_gem_object *obj, PIN_NOEVICT); if (!IS_ERR(vma)) { node.start = i915_ggtt_offset(vma); - node.allocated = false; + node.flags = 0; } else { ret = insert_mappable_node(ggtt, &node, PAGE_SIZE); if (ret) @@ -561,7 +561,7 @@ i915_gem_gtt_pwrite_fast(struct drm_i915_gem_object *obj, PIN_NOEVICT); if (!IS_ERR(vma)) { node.start = i915_ggtt_offset(vma); - node.allocated = false; + node.flags = 0; } else { ret = insert_mappable_node(ggtt, &node, PAGE_SIZE); if (ret) diff --git a/include/drm/drm_mm.h b/include/drm/drm_mm.h index 2c3bbb43c7d1..d7939c054259 100644 --- a/include/drm/drm_mm.h +++ b/include/drm/drm_mm.h @@ -168,8 +168,9 @@ struct drm_mm_node { struct rb_node rb_hole_addr; u64 __subtree_last; u64 hole_size; - bool allocated : 1; - bool scanned_block : 1; + unsigned long flags; +#define DRM_MM_NODE_ALLOCATED_BIT 0 +#define DRM_MM_NODE_SCANNED_BIT 1 #ifdef CONFIG_DRM_DEBUG_MM depot_stack_handle_t stack; #endif @@ -253,7 +254,7 @@ struct drm_mm_scan { */ static inline bool drm_mm_node_allocated(const struct drm_mm_node *node) { - return node->allocated; + return test_bit(DRM_MM_NODE_ALLOCATED_BIT, &node->flags); } /**