From patchwork Fri Jun 9 01:11:02 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Luis Claudio R. Goncalves" X-Patchwork-Id: 691057 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 58461C7EE25 for ; Fri, 9 Jun 2023 01:12:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237376AbjFIBMC (ORCPT ); Thu, 8 Jun 2023 21:12:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33160 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237308AbjFIBMA (ORCPT ); Thu, 8 Jun 2023 21:12:00 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A1B7D271D for ; Thu, 8 Jun 2023 18:11:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1686273073; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=oAPrzE0wKW/BWdQ1bdJelqKYq/KbYmGOiNXVRllbmt0=; b=KUpS0qqK8wSlUDrkpv4e40ficBsSZGylA8CnivgiLHLGs1SrmO9GXP52KSlzM30inZu2Xo 6S3fqDBfIYHU2XXN7fUvc0EO5TPBctAuh1WCuJyRUZITOdpexRF0EQZtSExmGarpVnpn0k uzrzoLJLebnQC9/WsrHbEHXoV2/gEvU= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-223--L8cKAO1MGiPLAHUqYs1aw-1; Thu, 08 Jun 2023 21:11:08 -0400 X-MC-Unique: -L8cKAO1MGiPLAHUqYs1aw-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 5D38D803DBE; Fri, 9 Jun 2023 01:11:07 +0000 (UTC) Received: from localhost (unknown [10.22.32.12]) by smtp.corp.redhat.com (Postfix) with ESMTP id 152341121315; Fri, 9 Jun 2023 01:11:06 +0000 (UTC) From: "Luis Claudio R. Goncalves" To: linux-rt-users , stable-rt , Steven Rostedt , Thomas Gleixner , Carsten Emde , Sebastian Andrzej Siewior , Daniel Wagner , Tom Zanussi , Clark Williams , Mark Gross , Jeff Brady , Luis Goncalves Subject: [PATCH RT 1/3] Revert "printk: declare printk_deferred_{enter, safe}() in include/linux/printk.h" Date: Thu, 8 Jun 2023 22:11:02 -0300 Message-Id: <20230609011104.967128-2-lgoncalv@redhat.com> In-Reply-To: <20230609011104.967128-1-lgoncalv@redhat.com> References: <20230609011104.967128-1-lgoncalv@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.3 Precedence: bulk List-ID: X-Mailing-List: linux-rt-users@vger.kernel.org v5.10.180-rt89-rc1 stable review patch. If anyone has any objections, please let me know. ----------- This reverts commit 32232bcd4e5300e678718d5c29da4dfa07ade01e. The support for deferred printing was removed in v5.10-rc1-rt1 by commit 9153e3c5cb0c9 ("printk: remove deferred printing") because: Since printing occurs either atomically or from the printing kthread, there is no need for any deferring or tracking possible recursion paths. Remove all printk context tracking. Fixes: 32232bcd4e530 ("printk: declare printk_deferred_{enter,safe}() in include/linux/printk.h") Fixes: 083183f8bea0f ("rt: printk: remove new references to deferred printing") Signed-off-by: Luis Claudio R. Goncalves --- include/linux/printk.h | 19 ------------------- 1 file changed, 19 deletions(-) diff --git a/include/linux/printk.h b/include/linux/printk.h index 92e0656841128..7e4352467d831 100644 --- a/include/linux/printk.h +++ b/include/linux/printk.h @@ -609,23 +609,4 @@ static inline void print_hex_dump_debug(const char *prefix_str, int prefix_type, #define print_hex_dump_bytes(prefix_str, prefix_type, buf, len) \ print_hex_dump_debug(prefix_str, prefix_type, 16, 1, buf, len, true) -#if defined(CONFIG_PRINTK) && !defined(CONFIG_PREEMPT_RT) -extern void __printk_safe_enter(void); -extern void __printk_safe_exit(void); -/* - * The printk_deferred_enter/exit macros are available only as a hack for - * some code paths that need to defer all printk console printing. Interrupts - * must be disabled for the deferred duration. - */ -#define printk_deferred_enter __printk_safe_enter -#define printk_deferred_exit __printk_safe_exit -#else /* defined(CONFIG_PRINTK) && !defined(CONFIG_PREEMPT_RT) */ -static inline void printk_deferred_enter(void) -{ -} -static inline void printk_deferred_exit(void) -{ -} -#endif - #endif