From patchwork Fri Dec 14 23:57:55 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeykumar Sankaran X-Patchwork-Id: 10731845 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 D3F4B112C for ; Fri, 14 Dec 2018 23:58:08 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 723B12D19A for ; Fri, 14 Dec 2018 23:58:08 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 666002D1D9; Fri, 14 Dec 2018 23:58:08 +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=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E07F62D19A for ; Fri, 14 Dec 2018 23:58:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726423AbeLNX6H (ORCPT ); Fri, 14 Dec 2018 18:58:07 -0500 Received: from smtp.codeaurora.org ([198.145.29.96]:36640 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726448AbeLNX6H (ORCPT ); Fri, 14 Dec 2018 18:58:07 -0500 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id EE16C6087D; Fri, 14 Dec 2018 23:58:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1544831886; bh=P0de04NZ2fX/bEy5y8zGIVnJAOYLDJDu4FFMQRGOUyI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MU+B1dBfTRTwQLFkSEBlepFBAko54v7LFhuHIip7kwBk/0EyTl+jJY+UNfC5vDGDk tyIICSF2DNJ5g8cnxVc8fu8lSqHMv7egEKZd5JIg0TM4PrZ+FyUJbPbHodWZ52aXUU ZdZUNB8RazAlntCDJ+2KtF2wBxSyIhwcUji4F0SU= Received: from jeykumar-linux.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: jsanka@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id 7CEA66087D; Fri, 14 Dec 2018 23:58:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1544831884; bh=P0de04NZ2fX/bEy5y8zGIVnJAOYLDJDu4FFMQRGOUyI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=W3W8aNI2ocOGFyPI87zDgcGw3rVQCjUa0J6ENFx/EmQvChbwotwFEbz8mZSaha8/H 52bisKqM5P1uibhgpaCoKODDF8yPjS2VjHIib08UizCMW+tc8bsmWo/P4yMysxO9uI I1aIlqx9fqzd+fa94cEGUOw04HUfJc5Hl9355Qjc= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 7CEA66087D Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=jsanka@codeaurora.org From: Jeykumar Sankaran To: dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, linux-arm-msm@vger.kernel.org Cc: Jeykumar Sankaran , seanpaul@chromium.org, robdclark@gmail.com, hoegsberg@google.com, jcrouse@codeaurora.org Subject: [PATCH v5 5/5] drm/msm: subclass work object for vblank events Date: Fri, 14 Dec 2018 15:57:55 -0800 Message-Id: <1544831875-32566-5-git-send-email-jsanka@codeaurora.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1544831875-32566-1-git-send-email-jsanka@codeaurora.org> References: <1544831875-32566-1-git-send-email-jsanka@codeaurora.org> Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP msm maintains a separate structure to define vblank work definitions and a list to track events submitted to the workqueue. We can avoid this redundant list and its protection mechanism, if we subclass the work object to encapsulate vblank event parameters. changes in v2: - subclass optimization on system wq (Sean Paul) changes in v3: - none changes in v4: - move flush_workqueue before irq uninstall changes in v5: - none Signed-off-by: Jeykumar Sankaran --- drivers/gpu/drm/msm/msm_drv.c | 71 ++++++++++++++----------------------------- drivers/gpu/drm/msm/msm_drv.h | 7 ----- 2 files changed, 22 insertions(+), 56 deletions(-) diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index f7cb2c7..f9ad362 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -207,61 +207,44 @@ u32 msm_readl(const void __iomem *addr) return val; } -struct vblank_event { - struct list_head node; +struct msm_vblank_work { + struct work_struct work; int crtc_id; bool enable; + struct msm_drm_private *priv; }; static void vblank_ctrl_worker(struct work_struct *work) { - struct msm_vblank_ctrl *vbl_ctrl = container_of(work, - struct msm_vblank_ctrl, work); - struct msm_drm_private *priv = container_of(vbl_ctrl, - struct msm_drm_private, vblank_ctrl); + struct msm_vblank_work *vbl_work = container_of(work, + struct msm_vblank_work, work); + struct msm_drm_private *priv = vbl_work->priv; struct msm_kms *kms = priv->kms; - struct vblank_event *vbl_ev, *tmp; - unsigned long flags; - - spin_lock_irqsave(&vbl_ctrl->lock, flags); - list_for_each_entry_safe(vbl_ev, tmp, &vbl_ctrl->event_list, node) { - list_del(&vbl_ev->node); - spin_unlock_irqrestore(&vbl_ctrl->lock, flags); - - if (vbl_ev->enable) - kms->funcs->enable_vblank(kms, - priv->crtcs[vbl_ev->crtc_id]); - else - kms->funcs->disable_vblank(kms, - priv->crtcs[vbl_ev->crtc_id]); - - kfree(vbl_ev); - spin_lock_irqsave(&vbl_ctrl->lock, flags); - } + if (vbl_work->enable) + kms->funcs->enable_vblank(kms, priv->crtcs[vbl_work->crtc_id]); + else + kms->funcs->disable_vblank(kms, priv->crtcs[vbl_work->crtc_id]); - spin_unlock_irqrestore(&vbl_ctrl->lock, flags); + kfree(vbl_work); } static int vblank_ctrl_queue_work(struct msm_drm_private *priv, int crtc_id, bool enable) { - struct msm_vblank_ctrl *vbl_ctrl = &priv->vblank_ctrl; - struct vblank_event *vbl_ev; - unsigned long flags; + struct msm_vblank_work *vbl_work; - vbl_ev = kzalloc(sizeof(*vbl_ev), GFP_ATOMIC); - if (!vbl_ev) + vbl_work = kzalloc(sizeof(*vbl_work), GFP_ATOMIC); + if (!vbl_work) return -ENOMEM; - vbl_ev->crtc_id = crtc_id; - vbl_ev->enable = enable; + INIT_WORK(&vbl_work->work, vblank_ctrl_worker); - spin_lock_irqsave(&vbl_ctrl->lock, flags); - list_add_tail(&vbl_ev->node, &vbl_ctrl->event_list); - spin_unlock_irqrestore(&vbl_ctrl->lock, flags); + vbl_work->crtc_id = crtc_id; + vbl_work->enable = enable; + vbl_work->priv = priv; - queue_work(priv->wq, &vbl_ctrl->work); + queue_work(priv->wq, &vbl_work->work); return 0; } @@ -273,19 +256,15 @@ static int msm_drm_uninit(struct device *dev) struct msm_drm_private *priv = ddev->dev_private; struct msm_kms *kms = priv->kms; struct msm_mdss *mdss = priv->mdss; - struct msm_vblank_ctrl *vbl_ctrl = &priv->vblank_ctrl; - struct vblank_event *vbl_ev, *tmp; int i; /* We must cancel and cleanup any pending vblank enable/disable * work before drm_irq_uninstall() to avoid work re-enabling an * irq after uninstall has disabled it. */ - flush_work(&vbl_ctrl->work); - list_for_each_entry_safe(vbl_ev, tmp, &vbl_ctrl->event_list, node) { - list_del(&vbl_ev->node); - kfree(vbl_ev); - } + + flush_workqueue(priv->wq); + destroy_workqueue(priv->wq); /* clean up event worker threads */ for (i = 0; i < priv->num_crtcs; i++) { @@ -315,9 +294,6 @@ static int msm_drm_uninit(struct device *dev) drm_irq_uninstall(ddev); pm_runtime_put_sync(dev); - flush_workqueue(priv->wq); - destroy_workqueue(priv->wq); - if (kms && kms->funcs) kms->funcs->destroy(kms); @@ -482,9 +458,6 @@ static int msm_drm_init(struct device *dev, struct drm_driver *drv) priv->wq = alloc_ordered_workqueue("msm", 0); INIT_LIST_HEAD(&priv->inactive_list); - INIT_LIST_HEAD(&priv->vblank_ctrl.event_list); - INIT_WORK(&priv->vblank_ctrl.work, vblank_ctrl_worker); - spin_lock_init(&priv->vblank_ctrl.lock); drm_mode_config_init(ddev); diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h index 2a30fc4..660ea44 100644 --- a/drivers/gpu/drm/msm/msm_drv.h +++ b/drivers/gpu/drm/msm/msm_drv.h @@ -77,12 +77,6 @@ enum msm_mdp_plane_property { PLANE_PROP_MAX_NUM }; -struct msm_vblank_ctrl { - struct work_struct work; - struct list_head event_list; - spinlock_t lock; -}; - #define MSM_GPU_MAX_RINGS 4 #define MAX_H_TILES_PER_DISPLAY 2 @@ -227,7 +221,6 @@ struct msm_drm_private { struct notifier_block vmap_notifier; struct shrinker shrinker; - struct msm_vblank_ctrl vblank_ctrl; struct drm_atomic_state *pm_state; };