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=-3.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED 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 0A63AC4741F for ; Thu, 24 Sep 2020 13:59:34 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id B982020888 for ; Thu, 24 Sep 2020 13:59:33 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="JsDPpGvH" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B982020888 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 432DE6EB28; Thu, 24 Sep 2020 13:59:33 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by gabe.freedesktop.org (Postfix) with ESMTPS id 840B06EB14; Thu, 24 Sep 2020 13:59:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=MOgC9OGGeZJDv1+n6/wlwMjXb8lCrwqJ2Nw3weXr+Qc=; b=JsDPpGvHCaRJKTjEp4jfBvIc6f pXZLbwXBu5W8wOQFQmAslu3rcVo3QzDGQFkjChuW6FIVMUFcn9IGZif/AfN2U01WzpkVAz+KFjobU 0jWaSlW3Xn2GQ84V721qkLjzWf+wjf87oufz3kW5JH8rWv+6T3T3JVoKiDNY9dD7MOcGuNMH2PZBs SnzOi2M6Zof+/P1qbt2Khez267c1eK7X/9CbdBAMVey/kVf/aLifYALWXQaU/QkCvZXO+P5xD/kVr VMyquwF/LWZfEYgUe0JzptxCjKKCYhp2fTxOVreYNbgMOT1pBTJrHrmgCpfvBdVmz9xgyChNoHSwP aldNLPLA==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=noisy.programming.kicks-ass.net) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1kLRlA-0003sC-Q7; Thu, 24 Sep 2020 13:58:08 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id 671203007CD; Thu, 24 Sep 2020 15:58:05 +0200 (CEST) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id 51F872010B5FA; Thu, 24 Sep 2020 15:58:05 +0200 (CEST) Date: Thu, 24 Sep 2020 15:58:05 +0200 From: Peter Zijlstra To: Steven Rostedt Message-ID: <20200924135805.GN2628@hirez.programming.kicks-ass.net> References: <87sgbbaq0y.fsf@nanos.tec.linutronix.de> <20200923084032.GU1362448@hirez.programming.kicks-ass.net> <20200923115251.7cc63a7e@oasis.local.home> <874kno9pr9.fsf@nanos.tec.linutronix.de> <20200923171234.0001402d@oasis.local.home> <871riracgf.fsf@nanos.tec.linutronix.de> <20200924083241.314f2102@gandalf.local.home> <20200924124241.GK2628@hirez.programming.kicks-ass.net> <20200924095138.5318d242@oasis.local.home> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20200924095138.5318d242@oasis.local.home> Subject: Re: [Intel-gfx] [patch RFC 00/15] mm/highmem: Provide a preemptible variant of kmap_atomic & friends X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Juri Lelli , David Airlie , Benjamin Herrenschmidt , Sebastian Andrzej Siewior , dri-devel , linux-mips@vger.kernel.org, Ben Segall , Max Filippov , Guo Ren , linux-sparc , Vincent Chen , Will Deacon , Ard Biesheuvel , linux-arch , Herbert Xu , Michael Ellerman , the arch/x86 maintainers , Russell King , linux-csky@vger.kernel.org, Mel Gorman , "open list:SYNOPSYS ARC ARCHITECTURE" , linux-xtensa@linux-xtensa.org, Paul McKenney , intel-gfx , linuxppc-dev , Greentime Hu , Thomas Gleixner , Dietmar Eggemann , Linux ARM , Chris Zankel , Michal Simek , Thomas Bogendoerfer , Nick Hu , Linux-MM , Linus Torvalds , LKML , Arnd Bergmann , Vineet Gupta , Paul Mackerras , Andrew Morton , Daniel Bristot de Oliveira , "David S. Miller" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" On Thu, Sep 24, 2020 at 09:51:38AM -0400, Steven Rostedt wrote: > > It turns out, that getting selected for pull-balance is exactly that > > condition, and clearly a migrate_disable() task cannot be pulled, but we > > can use that signal to try and pull away the running task that's in the > > way. > > Unless of course that running task is in a migrate disable section > itself ;-) See my ramblings here: https://lkml.kernel.org/r/20200924082717.GA1362448@hirez.programming.kicks-ass.net My plan was to have the migrate_enable() of the running task trigger the migration in that case. _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx