From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 74D31211494; Tue, 6 May 2025 05:56:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746510963; cv=none; b=tO4iuFWc1NbWCnBXtZAGVJLzFxcY8A1amyIo+46id4wmI6Ne9I2cexrM0oyPe+1TDqRD6yFjvNfWDd6yfr34o3XMymbPnGPqvsaiSBWvE+ky1zYwXisAah19WPBClH3IUTjmTijF20n+xi5dMWEF21pIFHQNuukzC2idApboYcI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746510963; c=relaxed/simple; bh=TghzRX75CNwnBhrhnizeck8TccB3K24BdAiqGkT2ozw=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=nKhk8XLsM8e9zOixZLHZYPRAICRx7kxngOWq16JpzFPtZbMHlEe8aaVFOkSM0nEGwVYh4J481+qtIe24kekKmICD4geN0dybp/84DbtfxrFWJUdisIvaOIdGXvOuFF/Nu8jiFAh6z09ZT1rHX17Eai369RuyfWtVdR1Y4QsziP0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=fEebFZCt; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="fEebFZCt" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D91D3C4CEE4; Tue, 6 May 2025 05:56:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1746510962; bh=TghzRX75CNwnBhrhnizeck8TccB3K24BdAiqGkT2ozw=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=fEebFZCtqn147cyBmy9NhWOq8c59/sC3fVqugWMaT0NFjm6JIXTZAKc8DDPX3HwpW h5XaaFE/aKWmrDTS4DU6GMuzjRme76VaPw4GqGMX16x6fyZLBvdifokwkBbISK89LH yKU0IjE51kdAMGM+HRO1Wz5l8/of3aQv1uKglcNo+Y0BuiCOkHa4pdL4KhFT1MQ03l pEvCdpxfq25vxCr+i64hLJ+XZHyBjrpTDH6pDQsoSK5hTw9MWGK05eDkJHTCw9Ig6T U4gtKIuYFLqWVJL4rnne/ft/g8Hrp/oAHBGwcB2TzXWeosFpeVAg5XNohkGNgIcjKG wAY/XdSL5VhJw== Message-ID: <58ee071e-b2d9-4e1a-b150-c2be59827676@kernel.org> Date: Tue, 6 May 2025 07:55:59 +0200 Precedence: bulk X-Mailing-List: linux-serial@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 8/8] vt: process the full-width ASCII fallback range programmatically To: Nicolas Pitre , Greg Kroah-Hartman Cc: Nicolas Pitre , linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org References: <20250505170021.29944-1-nico@fluxnic.net> <20250505170021.29944-9-nico@fluxnic.net> Content-Language: en-US From: Jiri Slaby Autocrypt: addr=jirislaby@kernel.org; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit On 05. 05. 25, 18:55, Nicolas Pitre wrote: > From: Nicolas Pitre > > This saves about 258 bytes of text. You mean .rodata, actually? > --- a/drivers/tty/vt/ucs.c > +++ b/drivers/tty/vt/ucs.c > @@ -222,5 +222,13 @@ u32 ucs_get_fallback(u32 cp) > if (single) > return ucs_fallback_singles_subs[single - ucs_fallback_singles]; > > + /* > + * Full-width to ASCII mapping (covering all printable ASCII 33-126) > + * 0xFF01 (！) to 0xFF5E (～) -> ASCII 33 (!) to 126 (~) > + * We process them programmatically to reduce the table size. > + */ > + if (cp >= 0xFF01 && cp <= 0xFF5E) > + return cp - 0xFF01 + 33; So do really »+ '!'« instead of »+ 33«. thanks, -- js suse labs