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=-3.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, 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 77112C433DF for ; Wed, 13 May 2020 16:27:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BD0632054F for ; Wed, 13 May 2020 16:27:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389656AbgEMQ1n (ORCPT ); Wed, 13 May 2020 12:27:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55000 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730657AbgEMQ1n (ORCPT ); Wed, 13 May 2020 12:27:43 -0400 Received: from Galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0BE1FC061A0C for ; Wed, 13 May 2020 09:27:43 -0700 (PDT) Received: from localhost ([127.0.0.1] helo=flow.W.breakpoint.cc) by Galois.linutronix.de with esmtp (Exim 4.80) (envelope-from ) id 1jYuEP-0000ME-54; Wed, 13 May 2020 18:27:41 +0200 From: Sebastian Andrzej Siewior To: linux-kernel@vger.kernel.org Cc: Tejun Heo , Lai Jiangshan , Peter Zijlstra , Thomas Gleixner , Ingo Molnar , Linus Torvalds Subject: [PATCH 0/3] workqueue: Make the workqueue code PREEMPT_RT safe Date: Wed, 13 May 2020 18:27:29 +0200 Message-Id: <20200513162732.977489-1-bigeasy@linutronix.de> X-Mailer: git-send-email 2.26.2 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The series changes `wq_manager_wait' from waitqueues to simple waitqueues and its internal locking (pool::lock and wq_mayday_lock) to raw spinlocks so that workqueues can be used on PREEMPT_RT from truly atomic context. Sebastian