From patchwork Thu Feb 17 10:34:03 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Zimmermann X-Patchwork-Id: 12749735 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 36B39C433F5 for ; Thu, 17 Feb 2022 10:34:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237143AbiBQKe0 (ORCPT ); Thu, 17 Feb 2022 05:34:26 -0500 Received: from mxb-00190b01.gslb.pphosted.com ([23.128.96.19]:38722 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234991AbiBQKeZ (ORCPT ); Thu, 17 Feb 2022 05:34:25 -0500 Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.220.29]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F3CCEFFF8C for ; Thu, 17 Feb 2022 02:34:08 -0800 (PST) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id B1D5A1F37D; Thu, 17 Feb 2022 10:34:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1645094047; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=TogbLB2YWZU4Ebgwufr1Y/9MrmIOZddMkz5APOYEyk0=; b=ejSElkuDIFJvnD8mhqer3og8gtKnJc7hI+VIrcQpad3nTbw1WZZEj80+BubB7OCu8a4b8M AMVdKKpM4z4sWHApxq6ROWnPY3+aWPI5hkNGhgJ3s92kfrMnlb4nog2r6trSeKNTIcqUto fDHlzMsv7ohc75VjU4+XFOvT+ayyJY8= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1645094047; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=TogbLB2YWZU4Ebgwufr1Y/9MrmIOZddMkz5APOYEyk0=; b=Utrpn1eilMnXnNzAQL9CM4MzrpYhhydPnsCh0IzX4VjMneXiTrj/BwcDaeYFliFbTL2pZ7 Q+ROS9kWmQxS9wDg== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 860A413DD8; Thu, 17 Feb 2022 10:34:07 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id QuOgH58kDmLQQgAAMHmgww (envelope-from ); Thu, 17 Feb 2022 10:34:07 +0000 From: Thomas Zimmermann To: daniel@ffwll.ch, deller@gmx.de, javierm@redhat.com, geert@linux-m68k.org Cc: dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, Thomas Zimmermann Subject: [PATCH 0/2] fbdev: Improve performance of fbdev console Date: Thu, 17 Feb 2022 11:34:03 +0100 Message-Id: <20220217103405.26492-1-tzimmermann@suse.de> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org Optimize performance of the fbdev console for the common case of software-based clearing and image blitting. The commit descripton of each patch contains resuls os a simple microbenchmark. I also tested the full patchset's effect on the console output by printing directory listings (i7-4790, FullHD, simpledrm, kernel with debugging). > time find /usr/share/doc -type f In the unoptimized case: real 0m6.173s user 0m0.044s sys 0m6.107s With optimizations applied: real 0m4.754s user 0m0.044s sys 0m4.698s In the optimized case, printing the directory listing is ~25% faster than before. Thomas Zimmermann (2): fbdev: Improve performance of sys_fillrect() fbdev: Improve performance of sys_imageblit() drivers/video/fbdev/core/sysfillrect.c | 16 ++------ drivers/video/fbdev/core/sysimgblt.c | 51 ++++++++++++++++++++------ 2 files changed, 42 insertions(+), 25 deletions(-)