From patchwork Tue Nov 6 22:36:30 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeykumar Sankaran X-Patchwork-Id: 10671583 X-Patchwork-Delegate: agross@codeaurora.org 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 0997F15A6 for ; Tue, 6 Nov 2018 22:36:43 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id EEC7D2AE0F for ; Tue, 6 Nov 2018 22:36:42 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E31CB2AE1A; Tue, 6 Nov 2018 22:36:42 +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 CBA652AE0F for ; Tue, 6 Nov 2018 22:36:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727212AbeKGIEJ (ORCPT ); Wed, 7 Nov 2018 03:04:09 -0500 Received: from smtp.codeaurora.org ([198.145.29.96]:35264 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726313AbeKGIEJ (ORCPT ); Wed, 7 Nov 2018 03:04:09 -0500 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 11C97612F2; Tue, 6 Nov 2018 22:36:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1541543800; bh=8Uc3HJE9tmWOKqGi9pfPoZbOGeC6KtGfVFqyZb2WfPk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=mFSfe0VYd6M17quUP7nAMeFRoqvWiqAxmFNG3UETH8a2sCMwhWvVEEQ525layIEnt QzQ0Cig5u4Bfb664LnsNXCyjcWrd3oA6QdyYVi664B+HRHqkB+LzC9PmD2inV7SA4T h2Gvp2IYBUAKfHDq2yFgoI7Kdy217OwHpA3mkf/U= 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 62C2B60C4B; Tue, 6 Nov 2018 22:36:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1541543798; bh=8Uc3HJE9tmWOKqGi9pfPoZbOGeC6KtGfVFqyZb2WfPk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Q2+8PsSexsTLbHSr2Xkh+sSHQ5maLqezahXsv2H9r65O6ZdoLc1rK7KhY6Z8VXMe4 69GLfmoYuV71ThtYHK8W4e2BN9K7tAXueII7T9XgOoqCaK7yVUAOgnFg9yR3/3eUlO MI1hTYtLNUahwE0jWmby/+gLMPeEwr3wEPWHlkeY= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 62C2B60C4B 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 v2 5/5] drm/msm: subclass work object for vblank events Date: Tue, 6 Nov 2018 14:36:30 -0800 Message-Id: <1541543790-748-5-git-send-email-jsanka@codeaurora.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1541543790-748-1-git-send-email-jsanka@codeaurora.org> References: <1541543790-748-1-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) Signed-off-by: Jeykumar Sankaran --- drivers/gpu/drm/msm/msm_drv.c | 67 +++++++++++++------------------------------ drivers/gpu/drm/msm/msm_drv.h | 7 ----- 2 files changed, 20 insertions(+), 54 deletions(-) diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index 6d6c73b..8da5be2 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -203,61 +203,44 @@ 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; - schedule_work(&vbl_ctrl->work); + schedule_work(&vbl_work->work); return 0; } @@ -269,14 +252,13 @@ 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. */ + msm_gem_shrinker_cleanup(ddev); drm_kms_helper_poll_fini(ddev); @@ -292,12 +274,6 @@ static int msm_drm_uninit(struct device *dev) #endif drm_mode_config_cleanup(ddev); - 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); - } - /* clean up event worker threads */ for (i = 0; i < priv->num_crtcs; i++) { if (priv->event_thread[i].thread) { @@ -469,9 +445,6 @@ 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 05d33a7..d4cbde2 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 @@ -225,7 +219,6 @@ struct msm_drm_private { struct notifier_block vmap_notifier; struct shrinker shrinker; - struct msm_vblank_ctrl vblank_ctrl; struct drm_atomic_state *pm_state; };