From mboxrd@z Thu Jan 1 00:00:00 1970 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 4329CC433F5 for ; Tue, 22 Feb 2022 12:43:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232022AbiBVMn5 (ORCPT ); Tue, 22 Feb 2022 07:43:57 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47366 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230466AbiBVMny (ORCPT ); Tue, 22 Feb 2022 07:43:54 -0500 Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B5A6C122F77; Tue, 22 Feb 2022 04:43:28 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1645533808; x=1677069808; h=from:to:cc:subject:in-reply-to:references:date: message-id:mime-version; bh=V3OvJzcIYv9Xc/I5EnGnnaoV/n9suE3zy47qd9uxvdY=; b=dq30ReBFRk1oDtE+KjAUesMwl76N53alJ8Yej0XpdSre37Nu8FDwMIpG SUm/M2LqcxaqivsYBaWbbxkHb6QYMdRq1kAG8dUOzKTDg3pufM7du/kK4 mSJ/8pFngeTRVcDWl5Al6NTGxsncXCkROdkkNY2TGhpNOqOCccCebOGMW 9WzNYGBiU+WF3ERypsLDoe6cCsBNIlqlnGovz3IxbMMS9T4xnxoBU2kOb TQ5fVJSsgm6pD97XOUsh2bGM5C8OdL2MhgmBS5x2r5Mw/AsEIoamMgkX8 S0GbLeHWzIWuGOoTCiq1vIC6t1Jy4YkvCgYigqdM/jGfBTVJI8UshsjgO Q==; X-IronPort-AV: E=McAfee;i="6200,9189,10265"; a="251625687" X-IronPort-AV: E=Sophos;i="5.88,387,1635231600"; d="scan'208";a="251625687" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Feb 2022 04:43:28 -0800 X-IronPort-AV: E=Sophos;i="5.88,387,1635231600"; d="scan'208";a="547725699" Received: from torta-mobl1.ger.corp.intel.com (HELO localhost) ([10.252.49.14]) by orsmga008-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Feb 2022 04:43:24 -0800 From: Jani Nikula To: Colin Ian King , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin , David Airlie , Daniel Vetter , intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Cc: kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org, Vandita Kulkarni , Manasi Navare Subject: Re: [PATCH] drm/i915: make a handful of read-only arrays static const In-Reply-To: <20220222120323.86480-1-colin.i.king@gmail.com> Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo References: <20220222120323.86480-1-colin.i.king@gmail.com> Date: Tue, 22 Feb 2022 14:43:22 +0200 Message-ID: <87tucr6phx.fsf@intel.com> MIME-Version: 1.0 Content-Type: text/plain Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 22 Feb 2022, Colin Ian King wrote: > Don't populate the read-only arrays on the stack but instead make > them static const. Also makes the object code a little smaller. > Reformat the statements to clear up checkpatch warning. > > Signed-off-by: Colin Ian King > --- > drivers/gpu/drm/i915/display/intel_vdsc.c | 16 ++++++++++++---- > 1 file changed, 12 insertions(+), 4 deletions(-) > > diff --git a/drivers/gpu/drm/i915/display/intel_vdsc.c b/drivers/gpu/drm/i915/display/intel_vdsc.c > index 3faea903b9ae..d49f66237ec3 100644 > --- a/drivers/gpu/drm/i915/display/intel_vdsc.c > +++ b/drivers/gpu/drm/i915/display/intel_vdsc.c > @@ -378,10 +378,18 @@ calculate_rc_params(struct rc_parameters *rc, > { > int bpc = vdsc_cfg->bits_per_component; > int bpp = vdsc_cfg->bits_per_pixel >> 4; > - int ofs_und6[] = { 0, -2, -2, -4, -6, -6, -8, -8, -8, -10, -10, -12, -12, -12, -12 }; > - int ofs_und8[] = { 2, 0, 0, -2, -4, -6, -8, -8, -8, -10, -10, -10, -12, -12, -12 }; > - int ofs_und12[] = { 2, 0, 0, -2, -4, -6, -8, -8, -8, -10, -10, -10, -12, -12, -12 }; > - int ofs_und15[] = { 10, 8, 6, 4, 2, 0, -2, -4, -6, -8, -10, -10, -12, -12, -12 }; > + static const int ofs_und6[] = { > + 0, -2, -2, -4, -6, -6, -8, -8, -8, -10, -10, -12, -12, -12, -12 > + }; > + static const int ofs_und8[] = { > + 2, 0, 0, -2, -4, -6, -8, -8, -8, -10, -10, -10, -12, -12, -12 > + }; > + static const int ofs_und12[] = { > + 2, 0, 0, -2, -4, -6, -8, -8, -8, -10, -10, -10, -12, -12, -12 > + }; Hmm, I wonder why the same values are duplicated in ofs_und8 and ofs_und12. Cc: Vandita, Manasi. Regardless, the patch is sane. Reviewed-by: Jani Nikula > + static const int ofs_und15[] = { > + 10, 8, 6, 4, 2, 0, -2, -4, -6, -8, -10, -10, -12, -12, -12 > + }; > int qp_bpc_modifier = (bpc - 8) * 2; > u32 res, buf_i, bpp_i; -- Jani Nikula, Intel Open Source Graphics Center