From patchwork Mon Jun 12 09:08:06 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Zijlstra X-Patchwork-Id: 13276113 X-Patchwork-Delegate: paul@paul-moore.com 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 8C9D9C87FDD for ; Mon, 12 Jun 2023 09:58:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235986AbjFLJ6E (ORCPT ); Mon, 12 Jun 2023 05:58:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33440 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234126AbjFLJyv (ORCPT ); Mon, 12 Jun 2023 05:54:51 -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 9D262127; Mon, 12 Jun 2023 02:39:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=Content-Type:MIME-Version:References: Subject:Cc:To:From:Date:Message-ID:Sender:Reply-To:Content-Transfer-Encoding: Content-ID:Content-Description:In-Reply-To; bh=15bpyN9dSHomHwXMCYT6MSRj+ih+/8LUKVobKyJuC4s=; b=WpdHcwE/Bn7t5/ICIYZ5akHT1T AGnD4HMO1wGigj+LruzShUv7NXjelPX5LpFyujoZtH2Z1iHiUobvXlccWasHUjJRSMKUN6pJuLa7W 98n2w9oxMkYOcx1J8YVwkxgQGUICtraIL8UFVycOONamctZs/wRIQ1zZ6mvGc7in/JNVKCV8BmPaW Mp3T/auA+btE20jDoL8+8957zF8v5BL3My7WeeP51fRCJQ1lYjUk0+2L2CSuy3SJjhyoEh3qy72ef deBz9GXTdmcbd5jIugv2bSCZ+E1YG5lJOeOqkG5rApXiQCRpQ7k7XQTrt/MbairLj7a37ML4ZUZtX JHMNouzg==; 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 1q8e0x-008kTk-2m; Mon, 12 Jun 2023 09:39:15 +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)) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id 7705F306158; Mon, 12 Jun 2023 11:38:53 +0200 (CEST) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 0) id 2E28C30A79086; Mon, 12 Jun 2023 11:38:49 +0200 (CEST) Message-ID: <20230612093541.382527855@infradead.org> User-Agent: quilt/0.66 Date: Mon, 12 Jun 2023 11:08:06 +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 53/57] perf: Simplify perf_event_sysfs_init() References: <20230612090713.652690195@infradead.org> MIME-Version: 1.0 Precedence: bulk List-ID: Signed-off-by: Peter Zijlstra (Intel) --- kernel/events/core.c | 10 +++------- 1 file changed, 3 insertions(+), 7 deletions(-) --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -13503,11 +13503,11 @@ static int __init perf_event_sysfs_init( struct pmu *pmu; int ret; - mutex_lock(&pmus_lock); + guard(mutex)(&pmus_lock); ret = bus_register(&pmu_bus); if (ret) - goto unlock; + return ret; list_for_each_entry(pmu, &pmus, entry) { if (pmu->dev) @@ -13517,12 +13517,8 @@ static int __init perf_event_sysfs_init( WARN(ret, "Failed to register pmu: %s, reason %d\n", pmu->name, ret); } pmu_bus_running = 1; - ret = 0; -unlock: - mutex_unlock(&pmus_lock); - - return ret; + return 0; } device_initcall(perf_event_sysfs_init);