From patchwork Mon Nov 29 13:47:33 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maarten Lankhorst X-Patchwork-Id: 12644569 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 05B9CC433F5 for ; Mon, 29 Nov 2021 13:58:01 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id B05076ED85; Mon, 29 Nov 2021 13:57:22 +0000 (UTC) Received: from mblankhorst.nl (mblankhorst.nl [IPv6:2a02:2308:0:7ec:e79c:4e97:b6c4:f0ae]) by gabe.freedesktop.org (Postfix) with ESMTPS id 3AFAB6ED07; Mon, 29 Nov 2021 13:57:17 +0000 (UTC) From: Maarten Lankhorst To: intel-gfx@lists.freedesktop.org Date: Mon, 29 Nov 2021 14:47:33 +0100 Message-Id: <20211129134735.628712-15-maarten.lankhorst@linux.intel.com> X-Mailer: git-send-email 2.34.0 In-Reply-To: <20211129134735.628712-1-maarten.lankhorst@linux.intel.com> References: <20211129134735.628712-1-maarten.lankhorst@linux.intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v2 14/16] drm/i915: Remove assert_object_held_shared X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: dri-devel@lists.freedesktop.org Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" This duck tape workaround is no longer required, unbind and destroy are fixed to take the obj->resv mutex before destroying and obj->mm.lock has been removed, always requiring obj->resv as well. Signed-off-by: Maarten Lankhorst Reviewed-by: Matthew Auld --- drivers/gpu/drm/i915/gem/i915_gem_object.c | 4 ++-- drivers/gpu/drm/i915/gem/i915_gem_object.h | 14 -------------- drivers/gpu/drm/i915/gem/i915_gem_pages.c | 12 ++++++------ drivers/gpu/drm/i915/gem/i915_gem_userptr.c | 2 +- drivers/gpu/drm/i915/i915_vma.c | 6 +++--- 5 files changed, 12 insertions(+), 26 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object.c b/drivers/gpu/drm/i915/gem/i915_gem_object.c index 39cd563544a5..0ae86812ed66 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_object.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_object.c @@ -544,7 +544,7 @@ bool i915_gem_object_has_struct_page(const struct drm_i915_gem_object *obj) #ifdef CONFIG_LOCKDEP if (IS_DGFX(to_i915(obj->base.dev)) && i915_gem_object_evictable((void __force *)obj)) - assert_object_held_shared(obj); + assert_object_held(obj); #endif return obj->mem_flags & I915_BO_FLAG_STRUCT_PAGE; } @@ -563,7 +563,7 @@ bool i915_gem_object_has_iomem(const struct drm_i915_gem_object *obj) #ifdef CONFIG_LOCKDEP if (IS_DGFX(to_i915(obj->base.dev)) && i915_gem_object_evictable((void __force *)obj)) - assert_object_held_shared(obj); + assert_object_held(obj); #endif return obj->mem_flags & I915_BO_FLAG_IOMEM; } diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object.h b/drivers/gpu/drm/i915/gem/i915_gem_object.h index f66d46882ea7..09cf1c92373a 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_object.h +++ b/drivers/gpu/drm/i915/gem/i915_gem_object.h @@ -157,20 +157,6 @@ i915_gem_object_put(struct drm_i915_gem_object *obj) #define assert_object_held(obj) dma_resv_assert_held((obj)->base.resv) -/* - * If more than one potential simultaneous locker, assert held. - */ -static inline void assert_object_held_shared(const struct drm_i915_gem_object *obj) -{ - /* - * Note mm list lookup is protected by - * kref_get_unless_zero(). - */ - if (IS_ENABLED(CONFIG_LOCKDEP) && - kref_read(&obj->base.refcount) > 0) - assert_object_held(obj); -} - static inline int __i915_gem_object_lock(struct drm_i915_gem_object *obj, struct i915_gem_ww_ctx *ww, bool intr) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_pages.c b/drivers/gpu/drm/i915/gem/i915_gem_pages.c index 49c6e55c68ce..6805b46170be 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_pages.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_pages.c @@ -19,7 +19,7 @@ void __i915_gem_object_set_pages(struct drm_i915_gem_object *obj, bool shrinkable; int i; - assert_object_held_shared(obj); + assert_object_held(obj); if (i915_gem_object_is_volatile(obj)) obj->mm.madv = I915_MADV_DONTNEED; @@ -95,7 +95,7 @@ int ____i915_gem_object_get_pages(struct drm_i915_gem_object *obj) struct drm_i915_private *i915 = to_i915(obj->base.dev); int err; - assert_object_held_shared(obj); + assert_object_held(obj); if (unlikely(obj->mm.madv != I915_MADV_WILLNEED)) { drm_dbg(&i915->drm, @@ -122,7 +122,7 @@ int __i915_gem_object_get_pages(struct drm_i915_gem_object *obj) assert_object_held(obj); - assert_object_held_shared(obj); + assert_object_held(obj); if (unlikely(!i915_gem_object_has_pages(obj))) { GEM_BUG_ON(i915_gem_object_has_pinned_pages(obj)); @@ -171,7 +171,7 @@ int i915_gem_object_truncate(struct drm_i915_gem_object *obj) /* Try to discard unwanted pages */ void i915_gem_object_writeback(struct drm_i915_gem_object *obj) { - assert_object_held_shared(obj); + assert_object_held(obj); GEM_BUG_ON(i915_gem_object_has_pages(obj)); if (obj->ops->writeback) @@ -202,7 +202,7 @@ __i915_gem_object_unset_pages(struct drm_i915_gem_object *obj) { struct sg_table *pages; - assert_object_held_shared(obj); + assert_object_held(obj); pages = fetch_and_zero(&obj->mm.pages); if (IS_ERR_OR_NULL(pages)) @@ -233,7 +233,7 @@ int __i915_gem_object_put_pages(struct drm_i915_gem_object *obj) return -EBUSY; /* May be called by shrinker from within get_pages() (on another bo) */ - assert_object_held_shared(obj); + assert_object_held(obj); i915_gem_object_release_mmap_offset(obj); diff --git a/drivers/gpu/drm/i915/gem/i915_gem_userptr.c b/drivers/gpu/drm/i915/gem/i915_gem_userptr.c index 3173c9f9a040..a315c010f635 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_userptr.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_userptr.c @@ -109,7 +109,7 @@ static void i915_gem_object_userptr_drop_ref(struct drm_i915_gem_object *obj) { struct page **pvec = NULL; - assert_object_held_shared(obj); + assert_object_held(obj); if (!--obj->userptr.page_ref) { pvec = obj->userptr.pvec; diff --git a/drivers/gpu/drm/i915/i915_vma.c b/drivers/gpu/drm/i915/i915_vma.c index 7261d82162af..100739b3e084 100644 --- a/drivers/gpu/drm/i915/i915_vma.c +++ b/drivers/gpu/drm/i915/i915_vma.c @@ -1723,7 +1723,7 @@ int _i915_vma_move_to_active(struct i915_vma *vma, void __i915_vma_evict(struct i915_vma *vma) { GEM_BUG_ON(i915_vma_is_pinned(vma)); - assert_object_held_shared(vma->obj); + assert_object_held(vma->obj); if (i915_vma_is_map_and_fenceable(vma)) { /* Force a pagefault for domain tracking on next user access */ @@ -1769,7 +1769,7 @@ int __i915_vma_unbind(struct i915_vma *vma) int ret; lockdep_assert_held(&vma->vm->mutex); - assert_object_held_shared(vma->obj); + assert_object_held(vma->obj); if (!drm_mm_node_allocated(&vma->node)) return 0; @@ -1801,7 +1801,7 @@ int i915_vma_unbind(struct i915_vma *vma) intel_wakeref_t wakeref = 0; int err; - assert_object_held_shared(vma->obj); + assert_object_held(vma->obj); /* Optimistic wait before taking the mutex */ err = i915_vma_sync(vma);