From patchwork Mon Nov 23 09:32:46 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Vetter X-Patchwork-Id: 7678831 Return-Path: X-Original-To: patchwork-dri-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 244E99F1D3 for ; Mon, 23 Nov 2015 09:33:41 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 3B30A20621 for ; Mon, 23 Nov 2015 09:33:40 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id 4AF572062C for ; Mon, 23 Nov 2015 09:33:39 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id C805F720F4; Mon, 23 Nov 2015 01:33:31 -0800 (PST) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail-wm0-f53.google.com (mail-wm0-f53.google.com [74.125.82.53]) by gabe.freedesktop.org (Postfix) with ESMTPS id D0E61720E5 for ; Mon, 23 Nov 2015 01:33:27 -0800 (PST) Received: by wmww144 with SMTP id w144so96097800wmw.0 for ; Mon, 23 Nov 2015 01:33:26 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ffwll.ch; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=R379ngOlaCjNme1I80/IN2UbhchHgKM9sYnJAFrWlWI=; b=hkdOZCFhAA2Ylome1/SMqb88okcyGHA1uxz6QMOGgDSK4hwGZw5+JoExTvUFt1Yp63 D906hzOoMOFzNR/xu/S6xsrsdGcYajHfHgJ8JlfO4jY77v5dVnAqkFB0rLKh18/Nt8OQ stshx0U5pZMEmf/wPydneod3yqarTRJg0MNZ4= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=R379ngOlaCjNme1I80/IN2UbhchHgKM9sYnJAFrWlWI=; b=RVZKkO9IywFAEbKjq3FWT5BaXmpWmaL1i7QDz2+Ybjfq8wtgpAdh/AeOnw8IFuQ4Jw i/NFqxdx9eNK/UwkXRHUKP5MLIcDHD6lIuJtxAKWj3g0IdnRhRRQfLS5t/HGzQjjiS47 pP8wnRlzK5A+TJ4UisSdjaVKrbdFB4NwEAUgIPkJXjgtN54l3oQNyOuiMj9/PnCuS3g1 ogtc6Hp2SPf6axxuuCSyKX74Puy4b+4jgIodAlv/NbQpeGYwZDqsDYswmvzDyR8/ku+u TdK+ZiKeHvWzwke++OMRPJUQu3NvQxXRRtk59LAfZFjuSrPBgdc1I14G/z7tpRCzh983 4Tgw== X-Gm-Message-State: ALoCoQkLUgbsFqp4n949UTvRPc8DBNmVNNXNgeFR/kRs2/L7nB36tlKdzDBBQX5lW/MtCD3kiavl X-Received: by 10.194.2.5 with SMTP id 5mr29315459wjq.153.1448271206098; Mon, 23 Nov 2015 01:33:26 -0800 (PST) Received: from phenom.ffwll.local (212-51-149-109.fiber7.init7.net. [212.51.149.109]) by smtp.gmail.com with ESMTPSA id pn6sm12332758wjb.15.2015.11.23.01.33.25 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 23 Nov 2015 01:33:25 -0800 (PST) From: Daniel Vetter To: DRI Development Subject: [PATCH 13/29] drm/armada: Use a private mutex to protect priv->linear Date: Mon, 23 Nov 2015 10:32:46 +0100 Message-Id: <1448271183-20523-14-git-send-email-daniel.vetter@ffwll.ch> X-Mailer: git-send-email 2.5.1 In-Reply-To: <1448271183-20523-1-git-send-email-daniel.vetter@ffwll.ch> References: <1448271183-20523-1-git-send-email-daniel.vetter@ffwll.ch> Cc: Daniel Vetter , Daniel Vetter , Intel Graphics Development , Russell King X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Spam-Status: No, score=-4.7 required=5.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_MED,RP_MATCHES_RCVD,T_DKIM_INVALID,UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Reusing the Big DRM Lock just leaks, and the few things left that dev->struct_mutex protected are very well contained - it's just the linear drm_mm manager. With this armada is completely struct_mutex free! Cc: Russell King Signed-off-by: Daniel Vetter --- drivers/gpu/drm/armada/armada_debugfs.c | 4 ++-- drivers/gpu/drm/armada/armada_drm.h | 3 ++- drivers/gpu/drm/armada/armada_drv.c | 1 + drivers/gpu/drm/armada/armada_gem.c | 10 +++++----- 4 files changed, 10 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/drm/armada/armada_debugfs.c b/drivers/gpu/drm/armada/armada_debugfs.c index 471e45627f1e..d4f7ab0a30d4 100644 --- a/drivers/gpu/drm/armada/armada_debugfs.c +++ b/drivers/gpu/drm/armada/armada_debugfs.c @@ -21,9 +21,9 @@ static int armada_debugfs_gem_linear_show(struct seq_file *m, void *data) struct armada_private *priv = dev->dev_private; int ret; - mutex_lock(&dev->struct_mutex); + mutex_lock(&priv->linear_lock); ret = drm_mm_dump_table(m, &priv->linear); - mutex_unlock(&dev->struct_mutex); + mutex_unlock(&priv->linear_lock); return ret; } diff --git a/drivers/gpu/drm/armada/armada_drm.h b/drivers/gpu/drm/armada/armada_drm.h index 4df6f2af2b21..6d2d8be38297 100644 --- a/drivers/gpu/drm/armada/armada_drm.h +++ b/drivers/gpu/drm/armada/armada_drm.h @@ -57,7 +57,8 @@ struct armada_private { DECLARE_KFIFO(fb_unref, struct drm_framebuffer *, 8); struct drm_fb_helper *fbdev; struct armada_crtc *dcrtc[2]; - struct drm_mm linear; + struct drm_mm linear; /* protectec by linear_lock */ + struct mutex linear_lock; struct drm_property *csc_yuv_prop; struct drm_property *csc_rgb_prop; struct drm_property *colorkey_prop; diff --git a/drivers/gpu/drm/armada/armada_drv.c b/drivers/gpu/drm/armada/armada_drv.c index 77ab93d60125..3bd7e1cde99e 100644 --- a/drivers/gpu/drm/armada/armada_drv.c +++ b/drivers/gpu/drm/armada/armada_drv.c @@ -102,6 +102,7 @@ static int armada_drm_load(struct drm_device *dev, unsigned long flags) dev->mode_config.preferred_depth = 24; dev->mode_config.funcs = &armada_drm_mode_config_funcs; drm_mm_init(&priv->linear, mem->start, resource_size(mem)); + mutex_init(&priv->linear_lock); ret = component_bind_all(dev->dev, dev); if (ret) diff --git a/drivers/gpu/drm/armada/armada_gem.c b/drivers/gpu/drm/armada/armada_gem.c index e3a86b96af2a..a43690ab18b9 100644 --- a/drivers/gpu/drm/armada/armada_gem.c +++ b/drivers/gpu/drm/armada/armada_gem.c @@ -46,7 +46,7 @@ static size_t roundup_gem_size(size_t size) return roundup(size, PAGE_SIZE); } -/* dev->struct_mutex is held here */ +/* dev_priv->linear_lock is held here */ void armada_gem_free_object(struct drm_gem_object *obj) { struct armada_gem_object *dobj = drm_to_armada_gem(obj); @@ -144,10 +144,10 @@ armada_gem_linear_back(struct drm_device *dev, struct armada_gem_object *obj) if (!node) return -ENOSPC; - mutex_lock(&dev->struct_mutex); + mutex_lock(&priv->linear_lock); ret = drm_mm_insert_node(&priv->linear, node, size, align, DRM_MM_SEARCH_DEFAULT); - mutex_unlock(&dev->struct_mutex); + mutex_unlock(&priv->linear_lock); if (ret) { kfree(node); return ret; @@ -158,9 +158,9 @@ armada_gem_linear_back(struct drm_device *dev, struct armada_gem_object *obj) /* Ensure that the memory we're returning is cleared. */ ptr = ioremap_wc(obj->linear->start, size); if (!ptr) { - mutex_lock(&dev->struct_mutex); + mutex_lock(&priv->linear_lock); drm_mm_remove_node(obj->linear); - mutex_unlock(&dev->struct_mutex); + mutex_unlock(&priv->linear_lock); kfree(obj->linear); obj->linear = NULL; return -ENOMEM;