From patchwork Fri Jan 25 11:02:09 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Zimmermann X-Patchwork-Id: 10781163 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 3916B13B5 for ; Fri, 25 Jan 2019 11:02:38 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2750C2F7F9 for ; Fri, 25 Jan 2019 11:02:38 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 1BE292F800; Fri, 25 Jan 2019 11:02:38 +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=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham 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 1F9BB2F7F9 for ; Fri, 25 Jan 2019 11:02:37 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 36DE56F38F; Fri, 25 Jan 2019 11:02:27 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mx1.suse.de (mx2.suse.de [195.135.220.15]) by gabe.freedesktop.org (Postfix) with ESMTPS id 188766F38C for ; Fri, 25 Jan 2019 11:02:21 +0000 (UTC) X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 0AE9DB070; Fri, 25 Jan 2019 11:02:19 +0000 (UTC) From: Thomas Zimmermann To: christian.koenig@amd.com, ray.huang@amd.com, Jerry.Zhang@amd.com, airlied@redhat.com, bskeggs@redhat.com, linux-graphics-maintainer@vmware.com, thellstrom@vmware.com, dri-devel@lists.freedesktop.org Subject: [PATCH v2 5/7] drm/vmwgfx: Replace ttm_bo_unref with ttm_bo_put Date: Fri, 25 Jan 2019 12:02:09 +0100 Message-Id: <20190125110211.5877-6-tzimmermann@suse.de> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190125110211.5877-1-tzimmermann@suse.de> References: <20190125110211.5877-1-tzimmermann@suse.de> 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: Thomas Zimmermann Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP The function ttm_bo_put releases a reference to a TTM buffer object. The function's name is more aligned to the Linux kernel convention of naming ref-counting function _get and _put. A call to ttm_bo_unref takes the address of the TTM BO object's pointer and clears the pointer's value to NULL. This is not necessary in most cases and sometimes even worked around by the calling code. A call to ttm_bo_put only releases the reference without clearing the pointer. In places where is might be necessary, the current behaviour of cleaning the pointer is kept. Signed-off-by: Thomas Zimmermann --- drivers/gpu/drm/vmwgfx/vmwgfx_bo.c | 8 ++------ drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf.c | 11 +++++++---- drivers/gpu/drm/vmwgfx/vmwgfx_drv.h | 4 +--- drivers/gpu/drm/vmwgfx/vmwgfx_mob.c | 21 ++++++++++++++------- drivers/gpu/drm/vmwgfx/vmwgfx_resource.c | 6 ++++-- drivers/gpu/drm/vmwgfx/vmwgfx_validation.c | 6 ++++-- 6 files changed, 32 insertions(+), 24 deletions(-) diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_bo.c b/drivers/gpu/drm/vmwgfx/vmwgfx_bo.c index bb9d95ef0707..5d5c2bce01f3 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_bo.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_bo.c @@ -534,7 +534,6 @@ static void vmw_user_bo_release(struct ttm_base_object **p_base) { struct vmw_user_buffer_object *vmw_user_bo; struct ttm_base_object *base = *p_base; - struct ttm_buffer_object *bo; *p_base = NULL; @@ -543,8 +542,7 @@ static void vmw_user_bo_release(struct ttm_base_object **p_base) vmw_user_bo = container_of(base, struct vmw_user_buffer_object, prime.base); - bo = &vmw_user_bo->vbo.base; - ttm_bo_unref(&bo); + ttm_bo_put(&vmw_user_bo->vbo.base); } @@ -597,7 +595,6 @@ int vmw_user_bo_alloc(struct vmw_private *dev_priv, struct ttm_base_object **p_base) { struct vmw_user_buffer_object *user_bo; - struct ttm_buffer_object *tmp; int ret; user_bo = kzalloc(sizeof(*user_bo), GFP_KERNEL); @@ -615,7 +612,6 @@ int vmw_user_bo_alloc(struct vmw_private *dev_priv, return ret; ttm_bo_get(&user_bo->vbo.base); - tmp = &user_bo->vbo.base; ret = ttm_prime_object_init(tfile, size, &user_bo->prime, @@ -624,7 +620,7 @@ int vmw_user_bo_alloc(struct vmw_private *dev_priv, &vmw_user_bo_release, &vmw_user_bo_ref_obj_release); if (unlikely(ret != 0)) { - ttm_bo_unref(&tmp); + ttm_bo_put(&user_bo->vbo.base); goto out_no_base_object; } diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf.c b/drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf.c index 48d1380a952e..70dab55e7888 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf.c @@ -765,7 +765,7 @@ static bool vmw_cmdbuf_try_alloc(struct vmw_cmdbuf_man *man, if (info->done) return true; - + memset(info->node, 0, sizeof(*info->node)); spin_lock(&man->lock); ret = drm_mm_insert_node(&man->mm, info->node, info->page_size); @@ -1276,8 +1276,10 @@ int vmw_cmdbuf_set_pool_size(struct vmw_cmdbuf_man *man, return 0; out_no_map: - if (man->using_mob) - ttm_bo_unref(&man->cmd_space); + if (man->using_mob) { + ttm_bo_put(man->cmd_space); + man->cmd_space = NULL; + } return ret; } @@ -1380,7 +1382,8 @@ void vmw_cmdbuf_remove_pool(struct vmw_cmdbuf_man *man) (void) vmw_cmdbuf_idle(man, false, 10*HZ); if (man->using_mob) { (void) ttm_bo_kunmap(&man->map_obj); - ttm_bo_unref(&man->cmd_space); + ttm_bo_put(man->cmd_space); + man->cmd_space = NULL; } else { dma_free_coherent(&man->dev_priv->dev->pdev->dev, man->size, man->map, man->handle); diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h index b7fb9b79bfef..accb2fafe2f1 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h @@ -1337,9 +1337,7 @@ static inline void vmw_bo_unreference(struct vmw_buffer_object **buf) *buf = NULL; if (tmp_buf != NULL) { - struct ttm_buffer_object *bo = &tmp_buf->base; - - ttm_bo_unref(&bo); + ttm_bo_put(&tmp_buf->base); } } diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_mob.c b/drivers/gpu/drm/vmwgfx/vmwgfx_mob.c index 7ed179d30ec5..d83cc66e1210 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_mob.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_mob.c @@ -300,7 +300,8 @@ static int vmw_otable_batch_setup(struct vmw_private *dev_priv, &batch->otables[i]); } - ttm_bo_unref(&batch->otable_bo); + ttm_bo_put(batch->otable_bo); + batch->otable_bo = NULL; out_no_bo: return ret; } @@ -365,7 +366,8 @@ static void vmw_otable_batch_takedown(struct vmw_private *dev_priv, vmw_bo_fence_single(bo, NULL); ttm_bo_unreserve(bo); - ttm_bo_unref(&batch->otable_bo); + ttm_bo_put(batch->otable_bo); + batch->otable_bo = NULL; } /* @@ -463,7 +465,8 @@ static int vmw_mob_pt_populate(struct vmw_private *dev_priv, out_unreserve: ttm_bo_unreserve(mob->pt_bo); - ttm_bo_unref(&mob->pt_bo); + ttm_bo_put(mob->pt_bo); + mob->pt_bo = NULL; return ret; } @@ -580,8 +583,10 @@ static void vmw_mob_pt_setup(struct vmw_mob *mob, */ void vmw_mob_destroy(struct vmw_mob *mob) { - if (mob->pt_bo) - ttm_bo_unref(&mob->pt_bo); + if (mob->pt_bo) { + ttm_bo_put(mob->pt_bo); + mob->pt_bo = NULL; + } kfree(mob); } @@ -698,8 +703,10 @@ int vmw_mob_bind(struct vmw_private *dev_priv, out_no_cmd_space: vmw_fifo_resource_dec(dev_priv); - if (pt_set_up) - ttm_bo_unref(&mob->pt_bo); + if (pt_set_up) { + ttm_bo_put(mob->pt_bo); + mob->pt_bo = NULL; + } return -ENOMEM; } diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c index d67b928adf6a..a7c30e567f09 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c @@ -485,7 +485,8 @@ vmw_resource_check_buffer(struct ww_acquire_ctx *ticket, out_no_validate: ttm_eu_backoff_reservation(ticket, &val_list); out_no_reserve: - ttm_bo_unref(&val_buf->bo); + ttm_bo_put(val_buf->bo); + val_buf->bo = NULL; if (backup_dirty) vmw_bo_unreference(&res->backup); @@ -545,7 +546,8 @@ vmw_resource_backoff_reservation(struct ww_acquire_ctx *ticket, INIT_LIST_HEAD(&val_list); list_add_tail(&val_buf->head, &val_list); ttm_eu_backoff_reservation(ticket, &val_list); - ttm_bo_unref(&val_buf->bo); + ttm_bo_put(val_buf->bo); + val_buf->bo = NULL; } /** diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_validation.c b/drivers/gpu/drm/vmwgfx/vmwgfx_validation.c index b3f547fc5d3d..e9944ac2e057 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_validation.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_validation.c @@ -628,8 +628,10 @@ void vmw_validation_unref_lists(struct vmw_validation_context *ctx) struct vmw_validation_bo_node *entry; struct vmw_validation_res_node *val; - list_for_each_entry(entry, &ctx->bo_list, base.head) - ttm_bo_unref(&entry->base.bo); + list_for_each_entry(entry, &ctx->bo_list, base.head) { + ttm_bo_put(entry->base.bo); + entry->base.bo = NULL; + } list_splice_init(&ctx->resource_ctx_list, &ctx->resource_list); list_for_each_entry(val, &ctx->resource_list, head)