From patchwork Fri Oct 5 19:49:15 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeykumar Sankaran X-Patchwork-Id: 10628693 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 A1002112B for ; Fri, 5 Oct 2018 19:49:24 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9041229BCA for ; Fri, 5 Oct 2018 19:49:24 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 82B0429C0A; Fri, 5 Oct 2018 19:49:24 +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 7302129BC0 for ; Fri, 5 Oct 2018 19:49:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728293AbeJFCtf (ORCPT ); Fri, 5 Oct 2018 22:49:35 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:42912 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728061AbeJFCtf (ORCPT ); Fri, 5 Oct 2018 22:49:35 -0400 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id C55F66024C; Fri, 5 Oct 2018 19:49:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1538768961; bh=Zz+F9rdnOF1+65/YkCsjgayxI7mBiI8PBWVn1ZiWjlM=; h=From:To:Cc:Subject:Date:From; b=aOTofYcdmVGU1gsPj9FUOcLB+uWe/kjklWCeVXhKzEuXQdy8CB1jnN0VqZdjUO/h+ XCGscb1h5lNa9CLav1QIXmpY7Bo1kTzGjvaowmVRQdWXL1K2cKcVzq2EZGylWB3XIT HDCTEN7pswFAiBPGCabKQktYkFEl+i5Otgm7Nwf0= 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 8728C6024C; Fri, 5 Oct 2018 19:49:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1538768960; bh=Zz+F9rdnOF1+65/YkCsjgayxI7mBiI8PBWVn1ZiWjlM=; h=From:To:Cc:Subject:Date:From; b=OqXDDRMubJiPjWKulyOFrGlveEV+z0v6h0syCMD6efhf1qRYJNsfuNya1lqZqbzDP c9GHOHRM2gl1DywGlvJZffEX/lsUI0zLQL+MuIlW1dJfa7qAxGpm7mMJOPOreL+lhb 1k/W/3TebeG+NZNj7vnvzt/iSHz9jRTQznmTeJD8= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 8728C6024C 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, dan.carpenter@oracle.com Subject: [PATCH] drm/msm: validate display and event threads Date: Fri, 5 Oct 2018 12:49:15 -0700 Message-Id: <1538768955-10000-1-git-send-email-jsanka@codeaurora.org> X-Mailer: git-send-email 1.9.1 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 While creating display and event threads per crtc, validate them before setting their priorities. Change-Id: I1dda805286df981c0f0e2b26507d089d3a21ff6c Signed-off-by: Jeykumar Sankaran --- drivers/gpu/drm/msm/msm_drv.c | 49 ++++++++++++++----------------------------- 1 file changed, 16 insertions(+), 33 deletions(-) diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index c1abad8..e03c659 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -553,17 +553,18 @@ static int msm_drm_init(struct device *dev, struct drm_driver *drv) kthread_run(kthread_worker_fn, &priv->disp_thread[i].worker, "crtc_commit:%d", priv->disp_thread[i].crtc_id); - ret = sched_setscheduler(priv->disp_thread[i].thread, - SCHED_FIFO, ¶m); - if (ret) - pr_warn("display thread priority update failed: %d\n", - ret); - if (IS_ERR(priv->disp_thread[i].thread)) { dev_err(dev, "failed to create crtc_commit kthread\n"); priv->disp_thread[i].thread = NULL; + goto err_msm_uninit; } + ret = sched_setscheduler(priv->disp_thread[i].thread, + SCHED_FIFO, ¶m); + if (ret) + pr_warn("display thread priority update failed: %d\n", + ret); + /* initialize event thread */ priv->event_thread[i].crtc_id = priv->crtcs[i]->base.id; kthread_init_worker(&priv->event_thread[i].worker); @@ -572,6 +573,12 @@ static int msm_drm_init(struct device *dev, struct drm_driver *drv) kthread_run(kthread_worker_fn, &priv->event_thread[i].worker, "crtc_event:%d", priv->event_thread[i].crtc_id); + if (IS_ERR(priv->event_thread[i].thread)) { + dev_err(dev, "failed to create crtc_event kthread\n"); + priv->event_thread[i].thread = NULL; + goto err_msm_uninit; + } + /** * event thread should also run at same priority as disp_thread * because it is handling frame_done events. A lower priority @@ -580,34 +587,10 @@ static int msm_drm_init(struct device *dev, struct drm_driver *drv) * failure at crtc commit level. */ ret = sched_setscheduler(priv->event_thread[i].thread, - SCHED_FIFO, ¶m); + SCHED_FIFO, ¶m); if (ret) - pr_warn("display event thread priority update failed: %d\n", - ret); - - if (IS_ERR(priv->event_thread[i].thread)) { - dev_err(dev, "failed to create crtc_event kthread\n"); - priv->event_thread[i].thread = NULL; - } - - if ((!priv->disp_thread[i].thread) || - !priv->event_thread[i].thread) { - /* clean up previously created threads if any */ - for ( ; i >= 0; i--) { - if (priv->disp_thread[i].thread) { - kthread_stop( - priv->disp_thread[i].thread); - priv->disp_thread[i].thread = NULL; - } - - if (priv->event_thread[i].thread) { - kthread_stop( - priv->event_thread[i].thread); - priv->event_thread[i].thread = NULL; - } - } - goto err_msm_uninit; - } + pr_warn("display event thread priority update failed:%d\n", + ret); } ret = drm_vblank_init(ddev, priv->num_crtcs);