From patchwork Thu Oct 21 10:35:59 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maarten Lankhorst X-Patchwork-Id: 12574585 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 41C78C433EF for ; Thu, 21 Oct 2021 10:37:43 +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 0CFE261208 for ; Thu, 21 Oct 2021 10:37:43 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 0CFE261208 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 66A416EC6C; Thu, 21 Oct 2021 10:36:32 +0000 (UTC) Received: from mblankhorst.nl (mblankhorst.nl [141.105.120.124]) by gabe.freedesktop.org (Postfix) with ESMTPS id ABB036EC42; Thu, 21 Oct 2021 10:36:12 +0000 (UTC) From: Maarten Lankhorst To: intel-gfx@lists.freedesktop.org Cc: dri-devel@lists.freedesktop.org, Maarten Lankhorst Date: Thu, 21 Oct 2021 12:35:59 +0200 Message-Id: <20211021103605.735002-22-maarten.lankhorst@linux.intel.com> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20211021103605.735002-1-maarten.lankhorst@linux.intel.com> References: <20211021103605.735002-1-maarten.lankhorst@linux.intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 22/28] drm/i915: Make i915_gem_evict_vm work correctly for already locked objects 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: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" i915_gem_execbuf will call i915_gem_evict_vm() after failing to pin all objects in the first round. We are about to remove those short-term pins, but even without those the objects are still locked. Add a special case to allow i915_gem_evict_vm to evict locked objects as well. This might also allow multiple objects sharing the same resv to be evicted. Signed-off-by: Maarten Lankhorst --- drivers/gpu/drm/i915/i915_gem_evict.c | 23 ++++++++++++++++++++++- 1 file changed, 22 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/i915_gem_evict.c b/drivers/gpu/drm/i915/i915_gem_evict.c index 24f5e3345e43..f502a617b35c 100644 --- a/drivers/gpu/drm/i915/i915_gem_evict.c +++ b/drivers/gpu/drm/i915/i915_gem_evict.c @@ -410,21 +410,42 @@ int i915_gem_evict_vm(struct i915_address_space *vm, struct i915_gem_ww_ctx *ww) do { struct i915_vma *vma, *vn; LIST_HEAD(eviction_list); + LIST_HEAD(locked_eviction_list); list_for_each_entry(vma, &vm->bound_list, vm_link) { if (i915_vma_is_pinned(vma)) continue; + /* + * If we already own the lock, trylock fails. In case the resv + * is shared among multiple objects, we still need the object ref. + */ + if (ww && (dma_resv_locking_ctx(vma->obj->base.resv) == &ww->ctx)) { + __i915_vma_pin(vma); + list_add(&vma->evict_link, &locked_eviction_list); + continue; + } + if (!i915_gem_object_trylock(vma->obj, ww)) continue; __i915_vma_pin(vma); list_add(&vma->evict_link, &eviction_list); } - if (list_empty(&eviction_list)) + if (list_empty(&eviction_list) && list_empty(&locked_eviction_list)) break; ret = 0; + /* Unbind locked objects first, before unlocking the eviction_list */ + list_for_each_entry_safe(vma, vn, &locked_eviction_list, evict_link) { + __i915_vma_unpin(vma); + + if (ret == 0) + ret = __i915_vma_unbind(vma); + if (ret != -EINTR) /* "Get me out of here!" */ + ret = 0; + } + list_for_each_entry_safe(vma, vn, &eviction_list, evict_link) { __i915_vma_unpin(vma); if (ret == 0)