From patchwork Fri Dec 14 23:57:52 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeykumar Sankaran X-Patchwork-Id: 10731851 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 703F4112C for ; Fri, 14 Dec 2018 23:58:13 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0E2EB2D19A for ; Fri, 14 Dec 2018 23:58:13 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 02B852D1D9; Fri, 14 Dec 2018 23:58:12 +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 A54962D19A for ; Fri, 14 Dec 2018 23:58:12 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 6C2816F4B8; Fri, 14 Dec 2018 23:58:07 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from smtp.codeaurora.org (smtp.codeaurora.org [198.145.29.96]) by gabe.freedesktop.org (Postfix) with ESMTPS id 00A3E6F39E; Fri, 14 Dec 2018 23:58:02 +0000 (UTC) Received: by smtp.codeaurora.org (Postfix, from userid 1000) id DF9446071B; Fri, 14 Dec 2018 23:58:02 +0000 (UTC) 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 BF9806071B; Fri, 14 Dec 2018 23:58:01 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org BF9806071B From: Jeykumar Sankaran To: dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, linux-arm-msm@vger.kernel.org Subject: [PATCH v5 2/5] drm/msm/dpu: use msm wq for vblank events Date: Fri, 14 Dec 2018 15:57:52 -0800 Message-Id: <1544831875-32566-2-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> 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: hoegsberg@google.com, seanpaul@chromium.org MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP DPU was using one thread per display to dispatch async commits and vblank requests. Since clean up already happened in msm to use the common thread for all the display commits, display threads are only used to cater vblank requests. Since a single thread is sufficient to do the job without any performance hits, use msm workqueue to queue requests. A separate patch is submitted later in this series to remove the display threads altogether. changes in v2: - switch to system wq before removing disp threads (Sean Paul) changes in v3: - none changes in v4: - use msm wq for vblank events changes in v5: - none Signed-off-by: Jeykumar Sankaran --- drivers/gpu/drm/msm/msm_drv.c | 9 ++++----- drivers/gpu/drm/msm/msm_drv.h | 2 +- 2 files changed, 5 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index 78d5b1c..c61ce06 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -213,7 +213,7 @@ struct vblank_event { bool enable; }; -static void vblank_ctrl_worker(struct kthread_work *work) +static void vblank_ctrl_worker(struct work_struct *work) { struct msm_vblank_ctrl *vbl_ctrl = container_of(work, struct msm_vblank_ctrl, work); @@ -261,8 +261,7 @@ static int vblank_ctrl_queue_work(struct msm_drm_private *priv, list_add_tail(&vbl_ev->node, &vbl_ctrl->event_list); spin_unlock_irqrestore(&vbl_ctrl->lock, flags); - kthread_queue_work(&priv->disp_thread[crtc_id].worker, - &vbl_ctrl->work); + queue_work(priv->wq, &vbl_ctrl->work); return 0; } @@ -282,7 +281,7 @@ static int msm_drm_uninit(struct device *dev) * work before drm_irq_uninstall() to avoid work re-enabling an * irq after uninstall has disabled it. */ - kthread_flush_work(&vbl_ctrl->work); + 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); @@ -489,7 +488,7 @@ static int msm_drm_init(struct device *dev, struct drm_driver *drv) INIT_LIST_HEAD(&priv->inactive_list); INIT_LIST_HEAD(&priv->vblank_ctrl.event_list); - kthread_init_work(&priv->vblank_ctrl.work, vblank_ctrl_worker); + 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 9cd6a96..8fad151 100644 --- a/drivers/gpu/drm/msm/msm_drv.h +++ b/drivers/gpu/drm/msm/msm_drv.h @@ -78,7 +78,7 @@ enum msm_mdp_plane_property { }; struct msm_vblank_ctrl { - struct kthread_work work; + struct work_struct work; struct list_head event_list; spinlock_t lock; };