From nobody Tue Sep 16 09:01:22 2025 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 1889BC3DA7A for ; Thu, 5 Jan 2023 10:39:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232894AbjAEKjI (ORCPT ); Thu, 5 Jan 2023 05:39:08 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59328 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233068AbjAEKiS (ORCPT ); Thu, 5 Jan 2023 05:38:18 -0500 Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 704283D1C1 for ; Thu, 5 Jan 2023 02:38:17 -0800 (PST) From: John Ogness DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1672915095; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=XbYaurIRdFG+/mjMZ4Nnsd0tE8OMeEIDH+uE2KSAjBQ=; b=OyPbJCV/0RK4Z5l8+dTVu6yHvXQ70l1n7PW0gElQzOHS3oez0h793xmtJrG8Ibf+KREW9u 1VzN0lMdCqaDig6Kf2ZAe3Qt9XTeJZ0iw3t+FgCBZawyKGYgyfvVyJ/3hkczitkNPhTTNB j40WbAW8PlxBK7U6nHBp40S4U4M+vcLzVBskrtz34k7jpvzF5gpAPjuRvjPanL64wfkI3G L63FCU3mdkRq1LPWENt2ooY4SFxJq3I/VJSfGa6mvvJ7ENGPikM8x6dUwVeSX4Dh8DWv6u Y3CrDzEDX6gTk6ASE4aCY0iEF6ooJOqUsZzvKQK8dq8vusbhORjPg3ZKH4r1FA== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1672915095; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=XbYaurIRdFG+/mjMZ4Nnsd0tE8OMeEIDH+uE2KSAjBQ=; b=sPVu67nrL/W0LLko+a9J1lMTSZXIt6Pmfe1siI4O6rnww0XwqxREtvcL3y9PhvRfmaMj07 qnH6IGrkUUh9itAw== To: Petr Mladek Cc: Sergey Senozhatsky , Steven Rostedt , Thomas Gleixner , linux-kernel@vger.kernel.org, Greg Kroah-Hartman Subject: [PATCH printk v4 2/8] console: Use BIT() macros for @flags values Date: Thu, 5 Jan 2023 11:43:29 +0106 Message-Id: <20230105103735.880956-3-john.ogness@linutronix.de> In-Reply-To: <20230105103735.880956-1-john.ogness@linutronix.de> References: <20230105103735.880956-1-john.ogness@linutronix.de> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Thomas Gleixner Rather than manually calculating powers of 2, use the BIT() macros. Also take this opportunatity to cleanup and restructure the value comments into proper kerneldoc comments. Signed-off-by: Thomas Gleixner Signed-off-by: John Ogness Reviewed-by: Petr Mladek --- include/linux/console.h | 46 ++++++++++++++++++++++++++++++++--------- 1 file changed, 36 insertions(+), 10 deletions(-) diff --git a/include/linux/console.h b/include/linux/console.h index 9cea254b34b8..ed804dd7c2e8 100644 --- a/include/linux/console.h +++ b/include/linux/console.h @@ -15,6 +15,7 @@ #define _LINUX_CONSOLE_H_ 1 =20 #include +#include #include #include =20 @@ -125,18 +126,43 @@ static inline int con_debug_leave(void) /* * The interface for a console, or any other device that wants to capture * console messages (printer driver?) - * - * If a console driver is marked CON_BOOT then it will be auto-unregistered - * when the first real console is registered. This is for early-printk dr= ivers. */ =20 -#define CON_PRINTBUFFER (1) -#define CON_CONSDEV (2) /* Preferred console, /dev/console */ -#define CON_ENABLED (4) -#define CON_BOOT (8) -#define CON_ANYTIME (16) /* Safe to call when cpu is offline */ -#define CON_BRL (32) /* Used for a braille device */ -#define CON_EXTENDED (64) /* Use the extended output format a la /dev/kmsg= */ +/** + * cons_flags - General console flags + * @CON_PRINTBUFFER: Used by newly registered consoles to avoid duplicate + * output of messages that were already shown by boot + * consoles or read by userspace via syslog() syscall. + * @CON_CONSDEV: Indicates that the console driver is backing + * /dev/console. + * @CON_ENABLED: Indicates if a console is allowed to print records. If + * false, the console also will not advance to later + * records. + * @CON_BOOT: Marks the console driver as early console driver which + * is used during boot before the real driver becomes + * available. It will be automatically unregistered + * when the real console driver is registered unless + * "keep_bootcon" parameter is used. + * @CON_ANYTIME: A misnomed historical flag which tells the core code + * that the legacy @console::write callback can be invoked + * on a CPU which is marked OFFLINE. That is misleading as + * it suggests that there is no contextual limit for + * invoking the callback. The original motivation was + * readiness of the per-CPU areas. + * @CON_BRL: Indicates a braille device which is exempt from + * receiving the printk spam for obvious reasons. + * @CON_EXTENDED: The console supports the extended output format of + * /dev/kmesg which requires a larger output buffer. + */ +enum cons_flags { + CON_PRINTBUFFER =3D BIT(0), + CON_CONSDEV =3D BIT(1), + CON_ENABLED =3D BIT(2), + CON_BOOT =3D BIT(3), + CON_ANYTIME =3D BIT(4), + CON_BRL =3D BIT(5), + CON_EXTENDED =3D BIT(6), +}; =20 struct console { char name[16]; --=20 2.30.2