From patchwork Mon Jun 12 09:07:13 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Zijlstra X-Patchwork-Id: 13276089 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 5A4FCC7EE43 for ; Mon, 12 Jun 2023 09:57:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231504AbjFLJ4y (ORCPT ); Mon, 12 Jun 2023 05:56:54 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33516 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231797AbjFLJy3 (ORCPT ); Mon, 12 Jun 2023 05:54:29 -0400 Received: from desiato.infradead.org (desiato.infradead.org [IPv6:2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A2F435FFB; Mon, 12 Jun 2023 02:39:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=Subject:Cc:To:From:Date:Message-ID: Sender:Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding: Content-ID:Content-Description:In-Reply-To:References; bh=B0zTaY9KKPrZ1tK1qkRJnGUNtZfdXptR/HzHjs1+iS4=; b=XQZ4FGxflXtqrO54lLAdhO230P 0eX2jASHQqZyaZNrOmMoEAP3MzmJ1PuCQQZsDzJJBywGmqEPEQHqvhlhW6xpMkYIB7cscPsZnMTPl wda/YRaaOhoccHxY9GPvcZrmpGt4nCDyqnVSaswXky246eD7cW64gEprJmzd0jxHJVUT0l9r//0Pk si1QkPjlyyiXYTzocQuwfczKtYj0dLOHYdp/NLE/KEPazV26d+77/ruWNTca7LUqUMS4HC8k/lh1H dX6E3O3gMC+cI3mUHbifWMBmIlu4IhoS0cvWd9D1DJFJDkJUmucMJXsZhbMU02ynkCiQnt/FdIvcn A8w/NYnw==; Received: from j130084.upc-j.chello.nl ([24.132.130.84] helo=noisy.programming.kicks-ass.net) by desiato.infradead.org with esmtpsa (Exim 4.96 #2 (Red Hat Linux)) id 1q8e0f-008kOl-0u; Mon, 12 Jun 2023 09:38:49 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id 22C4F30058D; Mon, 12 Jun 2023 11:38:48 +0200 (CEST) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 0) id E7CDA30A20814; Mon, 12 Jun 2023 11:38:47 +0200 (CEST) Message-ID: <20230612090713.652690195@infradead.org> User-Agent: quilt/0.66 Date: Mon, 12 Jun 2023 11:07:13 +0200 From: Peter Zijlstra To: torvalds@linux-foundation.org, keescook@chromium.org, gregkh@linuxfoundation.org, pbonzini@redhat.com Cc: masahiroy@kernel.org, nathan@kernel.org, ndesaulniers@google.com, nicolas@fjasle.eu, catalin.marinas@arm.com, will@kernel.org, vkoul@kernel.org, trix@redhat.com, ojeda@kernel.org, peterz@infradead.org, mingo@redhat.com, longman@redhat.com, boqun.feng@gmail.com, dennis@kernel.org, tj@kernel.org, cl@linux.com, acme@kernel.org, mark.rutland@arm.com, alexander.shishkin@linux.intel.com, jolsa@kernel.org, namhyung@kernel.org, irogers@google.com, adrian.hunter@intel.com, juri.lelli@redhat.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de, bristot@redhat.com, vschneid@redhat.com, paulmck@kernel.org, frederic@kernel.org, quic_neeraju@quicinc.com, joel@joelfernandes.org, josh@joshtriplett.org, mathieu.desnoyers@efficios.com, jiangshanlai@gmail.com, rientjes@google.com, vbabka@suse.cz, roman.gushchin@linux.dev, 42.hyeyoo@gmail.com, apw@canonical.com, joe@perches.com, dwaipayanray1@gmail.com, lukas.bulwahn@gmail.com, john.johansen@canonical.com, paul@paul-moore.com, jmorris@namei.org, serge@hallyn.com, linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org, dmaengine@vger.kernel.org, llvm@lists.linux.dev, linux-perf-users@vger.kernel.org, rcu@vger.kernel.org, linux-security-module@vger.kernel.org, tglx@linutronix.de, ravi.bangoria@amd.com, error27@gmail.com, luc.vanoostenryck@gmail.com Subject: [PATCH v3 00/57] Scope-based Resource Management Precedence: bulk List-ID: Hi, After a wee bit of bike-shedding on the syntax/API of the thing I think we're in a reasonable shape. There's still the no_free_ptr() vs take_ptr() thing, but that can be easily sorted with a little script over the patches if we reach consensus. I've taken to converting kernel/sched/core.c and kernel/events/core.c to see how well this stuff actually works. Unlike last time, I've split them up into a gazillion little patches. Both for my sanity -- bisect is genius when you're trying to debug stuff in the middle of the night as well as reviewer sanity. These are by no means 'complete' convertions, I've mostly focussed on functions that had 'goto' in them. Since that's a large part of why I started on all this. x86_x64-defconfig boots and passes perf test. I'll go figure out how to point syzcaller at it. The patches have gone through a few cycles of 0day over the weekend, and mostly builds fine now. Dan Carpenter poked me about how sparse doesn't yet understand the __cleanup__ attribute and seems to suffer from decl-after-stmt issues, so that might be something that needs attention. Anyway, does this look like something we can live with? --- Makefile | 6 +- arch/arm64/kernel/vdso32/Makefile | 2 - drivers/dma/ioat/dma.c | 12 +- include/linux/cleanup.h | 167 ++++ include/linux/compiler-clang.h | 9 + include/linux/compiler_attributes.h | 6 + include/linux/cpu.h | 2 + include/linux/device.h | 7 + include/linux/file.h | 11 + include/linux/irqflags.h | 7 + include/linux/mutex.h | 4 + include/linux/percpu.h | 4 + include/linux/perf_event.h | 14 +- include/linux/preempt.h | 5 + include/linux/rcupdate.h | 3 + include/linux/rwsem.h | 8 + include/linux/sched/task.h | 2 + include/linux/slab.h | 3 + include/linux/spinlock.h | 31 + include/linux/srcu.h | 5 + kernel/events/core.c | 1642 +++++++++++++++-------------------- kernel/sched/core.c | 931 +++++++++----------- kernel/sched/sched.h | 40 + scripts/checkpatch.pl | 2 +- security/apparmor/include/lib.h | 6 +- 25 files changed, 1433 insertions(+), 1496 deletions(-)