From patchwork Thu Jun 15 10:56:25 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Sebastian Andrzej Siewior X-Patchwork-Id: 10821 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:994d:0:b0:3d9:f83d:47d9 with SMTP id k13csp546542vqr; Thu, 15 Jun 2023 04:04:17 -0700 (PDT) X-Google-Smtp-Source: ACHHUZ5OH8Rjdq1YJW35QCZsMsbSFLNwKkFpIqdpnKUlslcxCGo6aO/YTi71MnBI+Lc+5Ly2fcQa X-Received: by 2002:a05:6a20:e18f:b0:10c:9efb:e04c with SMTP id ks15-20020a056a20e18f00b0010c9efbe04cmr3668890pzb.61.1686827057090; Thu, 15 Jun 2023 04:04:17 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1686827057; cv=none; d=google.com; s=arc-20160816; b=dQMQbnypWx7BQLPx6er23gdJO/61HjP1olgctnefYdWSs2EMUvtAPnRDJkbuSFndJH YuWRXWlehkYrMJNzlHYiAZ9gO8MG+RltVauPCS8m50bdWPan3GWzvqT0No3NvXgb9brp S8htJ8uwiKaPwGi+8Z8KahDsD4DnIsWbbNvITSuvobkpO6VxxqwabAP7nDH7Ew80v8xs 0c9sd7fz2ncfaLMfW3n5SsLJ37AoCxj8rjAzZettR3koJP75L80diNllKSkZrChkdh44 h9ro2eeHcSORmfwZVEz4HfrWUp4bSeZgpjSrg2WaeDcaBhDxIq3urtl+SihDHF6hgA/Q zPhQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :message-id:date:subject:cc:to:dkim-signature:dkim-signature:from; bh=87qEr03Mw6Omvl9aclq5VuKtx0t+3+NpWz2F/tYIajI=; b=OoBm2PulhFga+Kojo6PlLhvde0xGmko+HBKtG3ZxLK8sRTdySWpgtk9KrtfUF7aBMs mJKg6yiQ+7tRCnHdBNjZCz+SkYbAP7uKt35U+NG4A83XD6YdgNwXAXCkw4pKPziKSrha fqQBEt61hyIPiInhn1mUWlJ8fTQbd7Idtjn2tozv9bU8KO05BrrUIcIsyNQv8nPUsOra EYs1bUPzBwocTi8K9tDWM6Lu+7m8ZPXD9NCTXkaJ2OPtRkG2M0WPGJ46Xuxmzc+MCxdX WA4m4urCHFtOg9mYOpnkLUZZ7dQhR0TyysMBBk3tSj0RqzzhT4hmI9aMwAxDD6wpfTYC I/yQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linutronix.de header.s=2020 header.b=m7ChPZfx; dkim=neutral (no key) header.i=@linutronix.de header.s=2020e; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=linutronix.de Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id n4-20020aa79844000000b0065addb172d1si998715pfq.380.2023.06.15.04.04.04; Thu, 15 Jun 2023 04:04:17 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@linutronix.de header.s=2020 header.b=m7ChPZfx; dkim=neutral (no key) header.i=@linutronix.de header.s=2020e; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=linutronix.de Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238757AbjFOK4s (ORCPT + 99 others); Thu, 15 Jun 2023 06:56:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57890 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232322AbjFOK4p (ORCPT ); Thu, 15 Jun 2023 06:56:45 -0400 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0F01F1FE5 for ; Thu, 15 Jun 2023 03:56:43 -0700 (PDT) From: Sebastian Andrzej Siewior DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1686826600; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=87qEr03Mw6Omvl9aclq5VuKtx0t+3+NpWz2F/tYIajI=; b=m7ChPZfxzDgsPSf8u3qoG6Bjk1pqbegELa5Xy/3MawjqNupB2hC7/16r4IZVQ+mRRcPY0x 2AxqdxFpm+TSsL9zK74Fyk/lkyQJshh+8+3+pvN735QdOeuWBv5yCl+sK04LijzL+fu4+q I3MbGLZbE4ppd5Y1zj/WDDAZKsjyBUXiFb3kZu6woVAdTinh0F5tVTzOBKmag9792xEca4 3+M/TNnndjN+Yd+sfDVYxYrQlHObnVGkDhp3JWqFtAz2bmXYlVDn4UG+p3AzcRgm9OSYi5 E5fpQ0f5izDF+078gTvKn3Eh2x6iy1f6lvHcqxQwDPV3HsbZTsPC3lbBFYQtow== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1686826600; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=87qEr03Mw6Omvl9aclq5VuKtx0t+3+NpWz2F/tYIajI=; b=X+v850/KKVRhD5CfWSJxVNP1c8RlQ1RwdPjmpNAGkBkM9ah6iOcSFPYLpny0MZVT4mfGtt 9WVlP668133T8GCw== To: linux-kernel@vger.kernel.org Cc: "Eric W. Biederman" , Oleg Nesterov , Peter Zijlstra , Thomas Gleixner Subject: [PATCH v3 0/2] signal: Avoid preempt_disable() in ptrace_stop() on PREEMPT_RT Date: Thu, 15 Jun 2023 12:56:25 +0200 Message-Id: <20230615105627.1311437-1-bigeasy@linutronix.de> MIME-Version: 1.0 X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED,SPF_HELO_NONE, SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1768766367845057162?= X-GMAIL-MSGID: =?utf-8?q?1768766367845057162?= this mini series updates the comment to properly explain why the preempt-disable section has been added and then disables this on PREEMPT_RT explaining why it can not be done. v3…v1 - Include the update comment of the second patch which was posted as v2 within the orignal thread. - Add Oleg's Acks. Previous post: https://lore.kernel.org/20230606085524.2049961-1-bigeasy@linutronix.de Sebastian