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 X-Spam-Level: X-Spam-Status: No, score=-4.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C7E78C433DF for ; Wed, 10 Jun 2020 15:23:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9B3D8207C3 for ; Wed, 10 Jun 2020 15:23:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1591802586; bh=3tOvKZALFeC10KTluWq5qeYGwZcCp6/RMxk7/aiNMFc=; h=From:To:Cc:Subject:Date:List-ID:From; b=ZUqvRHKVufWhnKCSKpvEbvI8CPWZ/yvjCsLlkEW1gOXMoApyvl44VDD8EXivJ+U5z 9po7AFdO9VUq1iYiciz0SnP1uM6O1fJ1jszJX7GndkapvMY/JJFBvbIQVcJCEZ96uj w3z5ksDflTKDYtocsqgZzqCWOxxx38sO2X7qxDFI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730137AbgFJPXG (ORCPT ); Wed, 10 Jun 2020 11:23:06 -0400 Received: from mail-lj1-f196.google.com ([209.85.208.196]:41652 "EHLO mail-lj1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728331AbgFJPXF (ORCPT ); Wed, 10 Jun 2020 11:23:05 -0400 Received: by mail-lj1-f196.google.com with SMTP id 9so2979789ljc.8; Wed, 10 Jun 2020 08:23:04 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=QRq2KlneLdvkgeGBvtIInEMf7/XC7XYNm4CS79Oqsg4=; b=abhvCwhEHlvz/aF/av8p7DmDbjWN9PH94N017tzz6gGagHr4ZQqC3DtFXXLyNaLpZ5 +gEL/1xGKVm7vG0WEWoS3iMD27jStzGLF8h4ZYeiNk5gUr66kDD88M4HYjL6T/hYWzas TeeWg+k+h+4UVEk4yE+/SnwrwQDx8FDrrTj1/gRW3c0n+IshmcLcxPDPc2ZvwnETw4ik KTCQeksUFab67F57iddqUzA+rwyYDLCIH7sp0rh4DqA+w3FxHLv3ArKSMWvp198GefT4 /dsfUJTRT/EFinOU2qoI5NbR+DHt72324VniLE7XXuMNB6vnk8PgvvlKJMjipqm6g7bB BPLQ== X-Gm-Message-State: AOAM532pfHW+V8y+E0CJPplAFemAlf4XF88/v8J6n2RfkneRv4lJx2e8 eMkPVaxgV8RM3nQFsrvpEnc= X-Google-Smtp-Source: ABdhPJzcctVka+CvL+lqcnWENwKg+C6fHk331iDt6j+G8x1gzpyqy2MkkCfHZxfZ97erli7naaQwGA== X-Received: by 2002:a2e:92d5:: with SMTP id k21mr2029404ljh.445.1591802583688; Wed, 10 Jun 2020 08:23:03 -0700 (PDT) Received: from xi.terra (c-beaee455.07-184-6d6c6d4.bbcust.telenor.se. [85.228.174.190]) by smtp.gmail.com with ESMTPSA id u6sm9610ljk.109.2020.06.10.08.23.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 10 Jun 2020 08:23:01 -0700 (PDT) Received: from johan by xi.terra with local (Exim 4.93.0.4) (envelope-from ) id 1jj2Z8-0004Po-6c; Wed, 10 Jun 2020 17:22:58 +0200 From: Johan Hovold To: Greg Kroah-Hartman Cc: Jiri Slaby , Dmitry Safonov <0x7f454c46@gmail.com>, Andy Shevchenko , linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org, Johan Hovold Subject: [PATCH v2 0/3] serial: core: fix up sysrq regressions Date: Wed, 10 Jun 2020 17:22:29 +0200 Message-Id: <20200610152232.16925-1-johan@kernel.org> X-Mailer: git-send-email 2.26.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-serial-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-serial@vger.kernel.org This series fixes a few regressions introduced by the recent sysrq rework that went into 5.6. The fix for the unnecessary per-character overhead probably could have been marked for stable but I left that decision to the maintainers as it is a bit intrusive (although mostly shuffling code around). Johan Changes in v2 - inline uart_unlock_and_check_sysrq() along with the other helpers (restoring the interrupt state in a helper was never an issue) Johan Hovold (3): Revert "serial: core: Refactor uart_unlock_and_check_sysrq()" serial: core: fix sysrq overhead regression serial: core: drop redundant sysrq checks drivers/tty/serial/serial_core.c | 96 +---------------------------- include/linux/serial_core.h | 102 +++++++++++++++++++++++++++++-- 2 files changed, 100 insertions(+), 98 deletions(-) -- 2.26.2